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Data Sheet November 11, 2010
12V Mega TLynxTM : Non-Isolated DC-DC Power Modules: 6.0Vdc - 14Vdc input; 0.8 to 3.63Vdc Output; 30A Output Current
Features

* Compliant to RoHS EU Directive 2002/95/EC (-Z versions) Compliant to ROHS EU Directive 2002/95/EC with lead solder exemption (non-Z versions) Compliant to IPC-9592 (September 2008), Category 2, Class II Delivers up to 30A of output current High efficiency: 92.9% @ 3.3V full load (VIN=12Vdc) Input voltage range from 6 to 14Vdc Output voltage programmable from 0.8 to 3.63Vdc Small size and low profile: 33.0 mm x 13.46 mm x 10.00 mm (1.30 in. x 0.53 in. x 0.39 in.)
RoHS Compliant Applications
Distributed power architectures Intermediate bus voltage applications Telecommunications equipment Servers and storage applications Networking equipment
Vin+
VIN
VOUT SENSE
RTUNE
Vout+

Monotonic start-up Startup into pre-biased output Output voltage sequencing (EZ-SEQUENCE Remote On/Off Remote Sense Over current and Over temperature protection Option- Parallel operation with active current sharing Wide operating temperature range (-40C to 85C) UL* 60950 Recognized, CSA C22.2 No. 60950-00 Certified, and VDE 0805 (EN60950-1 rd 3 edition) Licensed ISO** 9001 and ISO 14001 certified manufacturing facilities
TM
)
MODULE
Cin Q1
CTUNE
Co
ON/OFF GND
TRIM
RTrim
Description
The 12V Mega TLynxTM power modules are non-isolated dc-dc converters that can deliver up to 30A of output current. These modules operate over a wide range of input voltage (VIN = 6Vdc-14Vdc) and provide a precisely regulated output voltage from 0.8Vdc to 3.63Vdc, programmable via an external resistor. Features include remote On/Off, adjustable output voltage, over current and over temperature protection, output voltage sequencing and paralleling with active current sharing (-P versions). A new feature, the Tunable LoopTM, allows the user to optimize the dynamic response of the converter to match the load with reduced amount of output capacitance leading to savings on cost and PWB area
* UL is a registered trademark of Underwriters Laboratories, Inc.

CSA is a registered trademark of Canadian Standards Association. VDE is a trademark of Verband Deutscher Elektrotechniker e.V. ** ISO is a registered trademark of the International Organization of Standards
Document No: DS09-003 ver. 1.08 PDF Name: APTS030A0X3_ds.pdf
Data Sheet November 11, 2010
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules: 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect the device reliability.
Parameter Input Voltage Continuous Sequencing pin voltage Operating Ambient Temperature (see Thermal Considerations section) Storage Temperature All Tstg -55 125 C All All All VIN VsEQ TA -0.3 -0.3 -40 15 15 85 Vdc Vdc C Device Symbol Min Max Unit
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions.
Parameter Operating Input Voltage Maximum Input Current (VIN= VIN,min , VO= VO,set, IO=IO, max) Inrush Transient Input No Load Current (VIN = 12.0Vdc, IO = 0, module enabled) Input Stand-by Current (VIN = 12.0Vdc, module disabled) Input Reflected Ripple Current, peak-topeak (5Hz to 20MHz, 1H source impedance; VIN=6.0V to 14.0V, IO= IOmax ; See Figure 1) Input Ripple Rejection (120Hz) All All 100 50 mAp-p dB All VO,set = 0.8 Vdc VO,set = 3.3Vdc All It IIN,No load IIN,No load IIN,stand-by 91 265 20
2
Device All All
Symbol VIN IIN,max
Min 6.0
Typ 12
Max 14 19
Unit Vdc Adc
2
1
As mA mA mA
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Data Sheet November 11, 2010
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules: 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
Electrical Specifications (continued)
Parameter Output Voltage Set-point (VIN=VIN,nom, IO=IO, nom, Tref=25C) Output Voltage (Over all operating input voltage, resistive load, and temperature conditions until end of life) Adjustment Range Selected by an external resistor Output Regulation Line (VIN=VIN, min to VIN, max) Load (IO=IO, min to IO, max) Temperature (Tref=TA, min to TA, max) Output Ripple and Noise on nominal output (VIN=VIN, nom and IO=IO, min to IO, max COUT = 0.1F // 47 F ceramic capacitors) Peak-to-Peak (5Hz to 20MHz bandwidth) External Capacitance ESR 1 m With the Tunable Loop ESR 0.15 m ESR 10 m Output Current (VIN = 6 to 14Vdc) Output Current Limit Inception (Hiccup Mode) Output Short-Circuit Current (VO250mV) ( Hiccup Mode ) Efficiency VIN=12Vdc, TA=25C IO=IO, max , VO= VO,set VO,set = 0.8dc VO,set = 1.2Vdc VO,set = 1.8Vdc VO,set = 2.5Vdc VO,set = 3.3Vdc Switching Frequency, Fixed All fsw 83.0 87.1 90.1 91.8 92.9 300 % % % % % kHz All All All Io IO, lim IO, s/c 0 140 3.5 30 Adc % Iomax Adc
TM 1 TM
Device All
Symbol VO, set
Min -1.5
Typ
Max +1.5
Unit % VO, set
All
VO, set
-3.0
+3.0
% VO, set
All
0.8 0.5
3.63
Vdc
All All All
10 10 1
mV mV % VO, set
All
50
mVpk-pk
Without the Tunable Loop
All
CO, max CO, max CO, max
0

200
F
All All
0 0
1000 10000
F F
General Specifications
Parameter Min Typ 4,443,300 Max Unit
Calculated MTBF (VIN=12V, VO=2.5Vdc, IO= 0.8IO, max, TA=40C, 200LFM) Per Telcordia Issue 2 Method 1 Case 3 Weight
Hours g (oz.)
7.04 (0.248)
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Data Sheet November 11, 2010
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules: 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions for additional information.
Parameter On/Off Signal Interface (VIN=VIN, min to VIN, max ; open collector or equivalent, Signal referenced to GND) Logic High (On/Off pin open - Module OFF) Input High Current Input High Voltage Logic Low (Module ON) Input Low Current Input Low Voltage Turn-On Delay and Rise Times (VIN=VIN, nom, IO=IO, max , VO to within 1% of steady state) Case 1: On/Off input is enabled and then input power is applied (delay from instant at which VIN = VIN, min until Vo = 10% of Vo, set) Case 2: Input power is applied for at least one second and then the On/Off input is enabled (delay from instant at which Von/Off is enabled until Vo = 10% of Vo, set) Output voltage Rise time (time for Vo to rise from 10% of Vo, set to 90% of Vo, set) Output voltage overshoot IO = IO, max; VIN, min - VIN, max, TA = 25 C Remote Sense Range Over temperature Protection (See Thermal Consideration section) Sequencing Slew rate capability (VIN, min to VIN, max; IO, min to IO, max VSEQ < Vo) Sequencing Delay time (Delay from VIN, min to application of voltage on SEQ pin) Tracking Accuracy Power-up (2V/ms) Power-down (1V/ms) (VIN, min to VIN, max; IO, min - IO, max VSEQ < Vo) Input Undervoltage Lockout Turn-on Threshold Turn-off Threshold Forced Load Share Accuracy Number of units in Parallel All All -P -P 5.5 5.0 10 5 Vdc Vdc % Io All All TsEQ-delay VSEQ -Vo VSEQ -Vo 10 100 200 200 400 msec mV mV All dVSEQ/dt -- 2 V/msec All All Tref 125 0.5 V C
o
Device
Symbol
Min
Typ
Max
Unit
All All All All
IIH VIH IIL VIL
0.5 3.0 -0.3

3.3 VIN, max 200 1.2
mA V A V
All
Tdelay
2.5
5
msec
All
Tdelay
2.5
5
msec
All
Trise
2
10 3.0
msec % VO, set
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Data Sheet November 11, 2010
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules: 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
Characteristic Curves
The following figures provide typical characteristics for the APTS030A0X3-SRPHZ at 0.8V out and 25oC.
95
35 30
1m/s (200LFM)
OUTPUT CURRENT, Io (A)
90
EFFICIENCY, (%)
25 20 15 10 5 0 35 45 55 65
O
85
NC
80
Vin=12V Vin=6V
0.5m/s (100LFM)
75
Vin=14V
70 0 5 10 15 20 25 30
75
85
OUTPUT CURRENT, IO (A)
AMBIENT TEMPERATURE, TA C
Figure 1. Converter Efficiency versus Output Current.
OUTPUT VOLTAGE OUTPUT CURRENT,
Figure 4. Derating Output Current versus Ambient Temperature and Airflow at 12V in.
VO (V) (200mV/div) IO (A) (5Adiv)
OUTPUT VOLTAGE
VO (V) (20mV/div)
TIME, t (1s/div)
TIME, t (20s /div)
Figure 2. Typical output ripple and noise (VIN = 12V, Io = 30A, COUT = 0.1F // 47 F ceramic capacitors ).
ON/OFF VOLTAGE VON/OFF (V) (5V/div)
Figure 5. Transient Response to Dynamic Load Change from 0% to 50% to 0% with VIN=12V.
INPUT VOLTAGE OUTPUT VOLTAGE VIN (V) (5V/div) VO (V) (200mV/div)
OUTPUT VOLTAGE
VO (V) (200mV/div)
TIME, t (2ms/div)
TIME, t (2ms/div)
Figure 3. Typical Start-up Using On/Off Voltage (Io = Io,max).
Figure 6. Typical Start-up Using Input Voltage (VIN = 14V, Io = Io,max).
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Data Sheet November 11, 2010
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules: 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
Characteristic Curves
The following figures provide typical characteristics for the APTS030A0X3-SRPHZ at 1.2V out and 25oC.
95
35 30 25 20 15 10 5 0 35 45 55 65
O
85 Vin=12V 80 Vin=6V 75 Vin=14V
OUTPUT CURRENT, Io (A)
90
EFFICIENCY, (%)
NC 0.5m/s (100LFM)
1m/s (200LFM)
70 0 5 10 15 20 25 30
75
85
OUTPUT CURRENT, IO (A)
AMBIENT TEMPERATURE, TA C
Figure 7. Converter Efficiency versus Output Current.
Figure 10. Output Current Derating versus Ambient Temperature and Airflow at 12V in.
OUTPUT VOLTAGE OUTPUT CURRENT, VO (V) (200mV/div) IO (A) (5Adiv)
OUTPUT VOLTAGE
VO (V) (20mV/div)
TIME, t (1s/div)
TIME, t (20s /div)
Figure 8. Typical output ripple and noise (VIN = 12V, Io = 30A, COUT = 0.1F // 47 F ceramic capacitors ).
ON/OFF VOLTAGE VON/OFF (V) (5V/div)
Figure 11. Transient Response to Dynamic Load Change from 0% to 50% to 0% with VIN=12V.
INPUT VOLTAGE OUTPUT VOLTAGE VIN (V) (5V/div) VO (V) (500mV/div)
OUTPUT VOLTAGE
VO (V) (500mV/div)
TIME, t (2ms/div)
TIME, t (2ms/div)
Figure 9. Typical Start-up Using On/Off Voltage (Io = Io,max).
Figure 12. Typical Start-up Using Input Voltage (VIN = 14V, Io = Io,max).
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Data Sheet November 11, 2010
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules: 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
Characteristic Curves
The following figures provide typical characteristics for the APTS030A0X3-SRPHZ at 1.8V out and 25oC.
95
35 30
2m/s (400LFM)
OUTPUT CURRENT, Io (A)
90
EFFICIENCY, (%)
25
NC
85 Vin=12V 80 Vin=6V Vin=14V
20 15 10 5 0 35 45 55
0.5m/s (100LFM) 1m/s (200LFM)
75
1.5m/s (300LFM)
70 0 5 10 15 20 25 30
65
O
75
85
OUTPUT CURRENT, IO (A)
AMBIENT TEMPERATURE, TA C
Figure 13. Converter Efficiency versus Output Current.
OUTPUT VOLTAGE OUTPUT CURRENT,
Figure 16. Output Current Derating versus Ambient Temperature and Airflow at 12V in.
VO (V) (200mV/div) IO (A) (5Adiv)
OUTPUT VOLTAGE
VO (V) (20mV/div)
TIME, t (1s/div)
TIME, t (20s /div)
Figure 14. Typical output ripple and noise (VIN = 12V, Io = 30A, COUT = 0.1F // 47 F ceramic capacitors ).
ON/OFF VOLTAGE VON/OFF (V) (5V/div)
Figure 17. Transient Response to Dynamic Load Change from 0% to 50% to 0% with VIN=12V.
INPUT VOLTAGE OUTPUT VOLTAGE VIN (V) (5V/div) VO (V) (500mV/div)
OUTPUT VOLTAGE
VO (V) (500mV/div)
TIME, t (2ms/div)
TIME, t (2ms/div)
Figure 15. Typical Start-up Using On/Off Voltage (Io = Io,max).
Figure 18. Typical Start-up Using Input Voltage (VIN = 14V, Io = Io,max).
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Data Sheet November 11, 2010
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules: 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
Characteristic Curves
The following figures provide typical characteristics for the APTS030A0X3-SRPHZ at 2.5V out and 25oC.
100 95
35 30
OUTPUT CURRENT, Io (A)
EFFICIENCY, (%)
90 85 80 75 70 0 5 10 15 20 25 30 Vin=6V
25 20 15 10 5 0 35 45 55 65
O
NC
0.5m/s (100LFM) 1m/s (200LFM) 1.5m/s (300LFM) 2m/s (400LFM)
Vin=12V Vin=14V
75
85
OUTPUT CURRENT, IO (A)
AMBIENT TEMPERATURE, TA C
Figure 19. Converter Efficiency versus Output Current.
Figure 22. Output Current Derating versus Ambient Temperature and Airflow at 12V in.
OUTPUT VOLTAGE OUTPUT CURRENT, VO (V) (200mV/div) IO (A) (5Adiv)
OUTPUT VOLTAGE
VO (V) (20mV/div)
TIME, t (1s/div)
TIME, t (20s /div)
Figure 20. Typical output ripple and noise (VIN = 12V, Io = 30A, COUT = 0.1F // 47 F ceramic capacitors).
ON/OFF VOLTAGE VON/OFF (V) (5V/div)
Figure 23. Transient Response to Dynamic Load Change from 0% to 50% to 0% with VIN=12V.
INPUT VOLTAGE OUTPUT VOLTAGE
OUTPUT VOLTAGE
VO (V) (1V/div)
TIME, t (2ms/div)
VO (V) (1V/div)
VIN (V) (5V/div)
TIME, t (2ms/div)
Figure 21. Typical Start-up Using On/Off Voltage (Io = Io,max).
Figure 24. Typical Start-up Using Input Voltage (VIN = 14V, Io = Io,max).
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Data Sheet November 11, 2010
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules: 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
Characteristic Curves
The following figures provide typical characteristics for the APTS030A0X3-SRPHZ at 3.3V out and 25oC.
100 95
35 30
OUTPUT CURRENT, Io (A)
EFFICIENCY, (%)
90 85 Vin=12V 80 75 70 0 5 10 15 20 25 30 Vin=6V Vin=14V
25
NC
20 15 10 5 0 0 20 40 60
O
0.5m/s (100LFM) 1.5m/s (300LFM) 1m/s (200LFM) 2m/s (400LFM)
80
OUTPUT CURRENT, IO (A)
AMBIENT TEMPERATURE, TA C
Figure 19. Converter Efficiency versus Output Current.
Figure 22. Output Current Derating versus Ambient Temperature and Airflow at 12V in.
OUTPUT VOLTAGE OUTPUT CURRENT, VO (V) (200mV/div) IO (A) (5Adiv)
OUTPUT VOLTAGE
VO (V) (20mV/div)
TIME, t (1s/div)
TIME, t (20s /div)
Figure 20. Typical output ripple and noise (VIN = 12V, Io = 30A, COUT = 0.1F // 47 F ceramic capacitors).
ON/OFF VOLTAGE VON/OFF (V) (2V/div)
Figure 23. Transient Response to Dynamic Load Change from 0% to 50% to 0% with VIN=12V.
INPUT VOLTAGE OUTPUT VOLTAGE
OUTPUT VOLTAGE
VO (V) (1V/div)
TIME, t (2ms/div)
VO (V) (1V/div)
VIN (V) (5V/div)
TIME, t (2ms/div)
Figure 21. Typical Start-up Using On/Off Voltage (Io = Io,max).
Figure 24. Typical Start-up Using Input Voltage (VIN = 14V, Io = Io,max).
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Data Sheet November 11, 2010
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules: 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
Test Configurations
TO OSCILLOSCOPE LTEST 1H VIN(+) CURRENT PROBE
Design Considerations
The 12V Mega TLynxTM module should be connected to a low-impedance source. A highly inductive source can affect the stability of the module. An input capacitor must be placed directly adjacent to the input pin of the module, to minimize input ripple voltage and ensure module stability. To minimize input voltage ripple, low-ESR ceramic capacitors are recommended at the input of the module. Figure 28 shows the input ripple voltage for various output voltages at 30A of load current with 1x22 F, 2x22 F or 2x47 F ceramic capacitors and an input of 12V. Input Ripple Voltage (mVp-p)
400 350 300 250 200 150 100 50 0 0.5 1 1.5 2 2.5 3 1x22uF 2x22uF 2x47uF
BATTERY
CS
220F
CIN Min 150F
E.S.R.<0.1 @ 20C 100kHz
COM
NOTE: Measure input reflected ripple current with a simulated source inductance (LTEST) of 1H. Capacitor CS offsets possible battery impedance. Measure current as shown above.
Figure 25. Input Reflected Ripple Current Test Setup.
COPPER STRIP VO (+) 1uF COM . 10uF SCOPE RESISTIVE LOAD
GROUND PLANE NOTE: All voltage measurements to be taken at the module terminals, as shown above. If sockets are used then Kelvin connections are required at the module terminals to avoid measurement errors due to socket contact resistance.
Output Voltage (Vdc) Figure 28. Input ripple voltage for various output voltages with 1x22 F, 2x22 F or 2x47 F ceramic capacitors at the input (30A load). Input voltage is 12V.
Figure 26. Output Ripple and Noise Test Setup.
Output Filtering
Rdistribution Rcontact VIN(+) VO Rcontact Rdistribution
VIN
VO
RLOAD
Rdistribution
Rcontact COM COM
Rcontact
Rdistribution
NOTE: All voltage measurements to be taken at the module terminals, as shown above. If sockets are used then Kelvin connections are required at the module terminals to avoid measurement errors due to socket contact resistance.
Figure 27. Output Voltage and Efficiency Test Setup.
VO. IO Efficiency = VIN. IIN x 100 %
The 12V Mega TLynx modules are designed for low output ripple voltage and will meet the maximum output ripple specification with no external capacitors. However, additional output filtering may be required by the system designer for a number of reasons. First, there may be a need to further reduce the output ripple and noise of the module. Second, the dynamic response characteristics may need to be customized to a particular load step change. To reduce the output ripple and improve the dynamic response to a step load change, additional capacitance at the output can be used. Low ESR ceramic and polymer are recommended to improve the dynamic response of the module. For stable operation of the module, limit the capacitance to less than the maximum output capacitance as specified in the electrical specification table. Optimal performance of the module can be achieved by using the Tunable Loop feature described later in this data sheet.
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Data Sheet November 11, 2010
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules: 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
140 120 Ripple (mVp-p) 100 80 60 40 20 0 0.5 1 1.5 2 2.5 Output Voltage (Volts) 3 1x10uF 1x47uF 2x47uF 4x47uF External External External External Cap Cap Cap Cap
Feature Descriptions
Remote On/Off
The 12V Mega TLynx power modules feature a On/Off pin for remote On/Off operation. If not using the On/Off pin, connect the pin to ground (the module will be ON). The On/Off signal (Von/off) is referenced to ground. The circuit configuration for remote On/Off operation of the module using the On/Off pin is shown in Figure 30. During a Logic High on the On/Off pin (transistor Q1 is OFF), the module remains OFF. The external resistor R1 should be chosen to maintain 3.0V minimum on the On/Off pin to ensure that the module is OFF when transistor Q1 is in the OFF state. Suitable values for R1 are 4.7K for input voltage of 12V and 3K for 5Vin. During Logic-Low when Q1 is turned ON, the module is turned ON. The On/Off pin can also be used to synchronize the output voltage start-up and shutdown of multiple modules in parallel. By connecting On/Off pins of multiple modules, the output start-up can be synchronized (please refer to characterization curves). When On/Off pins are connected together, all modules will shutdown if any one of the modules gets disabled due to undervoltage lockout or over temperature protection.
VIN+
TM
Figure 29. Output ripple voltage for various output voltages with external 1x10 F, 1x47 F, 2x47 F or 4x47 F ceramic capacitors at the output (30A load). Input voltage is 12V.
Safety Considerations
For safety agency approval the power module must be installed in compliance with the spacing and separation requirements of the end-use safety agency standards, i.e., UL 60950-1 2nd Edition, CSA C22.2 No. 60950-1-07, and VDE 08051+A11:2009-11 (DIN EN60950-1 2nd Edition) Licensed. The APTS030A0X were tested using a 30A, time delay fuse in the ungrounded input. For the converter output to be considered meeting the requirements of safety extra-low voltage (SELV), the input must meet SELV requirements. The power module has extra-low voltage (ELV) outputs when all inputs are ELV. The input to these units is to be provided with a time-delay fuse with a maximum rating of 30A in the positive input lead.
MODULE
Thermal SD R1 PWM Enable I ON/OFF
ON/OFF
+ VON/OFF Q1
1K 100K 100K
GND
_
Figure 30. Remote On/Off Implementation using ON/OFF .
Overcurrent Protection
To provide protection in a fault (output overload) condition, the unit is equipped with internal current-limiting circuitry and can endure current limiting continuously. At the point of current-limit inception, the unit enters hiccup mode. The unit operates normally once the output current is brought back into its specified range.
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Data Sheet November 11, 2010
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules: 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
Overtemperature Protection
To provide protection in a fault condition, the unit is equipped with a thermal shutdown circuit. The unit will shutdown if the overtemperature threshold of o 125 C is exceeded at the thermal reference point Tref . The thermal shutdown is not intended as a guarantee that the unit will survive temperatures beyond its rating. Once the unit goes into thermal shutdown it will then wait to cool before attempting to restart.
V IN(+) VO (+) SENSE ON/OFF TRIM R tri m GND LOAD
Input Undervoltage Lockout
At input voltages below the input undervoltage lockout limit, the module operation is disabled. The module will begin to operate at an input voltage above the undervoltage lockout turn-on threshold.
Figure 31. Circuit configuration to program output voltage using an external resistor.
Remote Sense
The 12V Mega TLynxTM power modules have a Remote Sense feature to minimize the effects of distribution losses by regulating the voltage at the SENSE pin. The voltage between the SENSE pin and VOUT pin must not exceed 0.5V. Note that the output voltage of the module cannot exceed the specified maximum value. This includes the voltage drop between the SENSE and Vout pins. When the Remote Sense feature is not being used, connect the SENSE pin to the VOUT pin.
Output Voltage Programming
The output voltage of the 12V Mega TLynxTM can be programmed to any voltage from 0.8dc to 3.63Vdc by connecting a resistor (shown as Rtrim in Figure 31) between Trim and GND pins of the module. Without an external resistor between Trim and GND pins, the output of the module will be 0.8Vdc. To calculate the value of the trim resistor, Rtrim for a desired output voltage, use the following equation:
Rtrim
8000 = Vo - 0.8
Voltage Margining
Output voltage margining can be implemented in TM the 12V Mega TLynx modules by connecting a resistor, Rmargin-up, from the Trim pin to the ground pin for margining-up the output voltage and by connecting a resistor, Rmargin-down, from the Trim pin to output pin for margining-down. Figure 32 shows the circuit configuration for output voltage margining. The POL Programming Tool, available at www.lineagepower.com under the Design Tools section, also calculates the values of Rmargin-up and Rmargin-down for a specific output voltage and % margin. Please consult your local Lineage Power technical representative for additional details.
Rtrim is the external resistor in Vo is the desired output voltage By using a 0.5% tolerance trim resistor with a TC of 100ppm, a set point tolerance of 1.5% can be achieved as specified in the electrical specification. Table 1 provides Rtrim values required for some common output voltages. The POL Programming Tool, available at www.lineagepower.com under the Design Tools section, helps determine the required external trim resistor needed for a specific output voltage.
Table 1
VO, set (V) 0.8 1.0 1.2 1.5 1.8 2.5 3.3 Rtrim (K) Open 40 20 11.429 8 4.706 3.2
Monotonic Start-up and Shutdown
The 12V Mega TLynx modules have monotonic start-up and shutdown behavior for any combination of rated input voltage, output current and operating temperature range.
TM
Startup into Pre-biased Output
The 12V Mega TLynxTM modules can start into a prebiased output as long as the prebias voltage is 0.5V less than the set output voltage. Note that prebias operation is not supported when output voltage sequencing is used.
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Data Sheet November 11, 2010
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules: 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
Vo Rmargin-down
the voltage at the sequencing pin will be 50mV when the sequencing signal is at zero.
VIN+
MODULE
Q2 Trim Rmargin-up Rtrim
MODULE
499K + R1 SEQ 10K OUT
Q1 GND
Figure 32. Circuit Configuration for margining Output voltage.
GND
Output Voltage Sequencing
The 12V Mega TLynxTM modules include a TM sequencing feature, EZ-SEQUENCE that enables users to implement various types of output voltage sequencing in their applications. This is accomplished via an additional sequencing pin. When not using the sequencing feature, either tie the SEQ pin to VIN or leave it unconnected. When an analog voltage is applied to the SEQ pin, the output voltage tracks this voltage until the output reaches the set-point voltage. The final value of the SEQ voltage must be set higher than the set-point voltage of the module. The output voltage follows the voltage on the SEQ pin on a one-to-one basis. By connecting multiple modules together, multiple modules can track their output voltages to the voltage applied on the SEQ pin. For proper voltage sequencing, first, input voltage is applied to the module. The On/Off pin of the module is left unconnected (or tied to GND for negative logic modules or tied to VIN for positive logic modules) so that the module is ON by default. After applying input voltage to the module, a minimum 10msec delay is required before applying voltage on the SEQ pin. This delay gives the module enough time to complete its internal power-up softstart cycle. During the delay time, the SEQ pin should be held close to ground (nominally 50mV 20 mV). This is required to keep the internal op-amp out of saturation thus preventing output overshoot during the start of the sequencing ramp. By selecting resistor R1 (see fig. 33) according to the following equation
Figure 33. Circuit showing connection of the sequencing signal to the SEQ pin. After the 10msec delay, an analog voltage is applied to the SEQ pin and the output voltage of the module will track this voltage on a one-to-one volt bases until the output reaches the set-point voltage. To initiate simultaneous shutdown of the modules, the SEQ pin voltage is lowered in a controlled manner. The output voltage of the modules tracks the voltages below their set-point voltages on a one-to-one basis. A valid input voltage must be maintained until the tracking and output voltages reach ground potential. TM When using the EZ-SEQUENCE feature to control start-up of the module, pre-bias immunity during start-up is disabled. The pre-bias immunity feature of the module relies on the module being in the diode-mode during start-up. When using the TM EZ-SEQUENCE feature, modules goes through an internal set-up time of 10msec, and will be in synchronous rectification mode when the voltage at the SEQ pin is applied. This will result in the module sinking current if a pre-bias voltage is present at the output of the module. When pre-bias immunity during start-up is required, the EZSEQUENCETM feature must be disabled. For additional guidelines on using the EZTM SEQUENCE feature please refer to Application Note AN04-008 "Application Guidelines for NonIsolated Converters: Guidelines for Sequencing of Multiple Modules", or contact the Lineage Power technical representative for additional information.
Active Load Sharing (-P Option)
For additional power requirements, the 12V Mega TLynxTM power module is also available with a parallel option. Up to five modules can be configured, in parallel, with active load sharing.
24950 ohms, R1 = V IN - 0.05
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Data Sheet November 11, 2010
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules: 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
Good layout techniques should be observed when using multiple units in parallel. To implement forced load sharing, the following connections should be made: * The share pins of all units in parallel must be connected together. The path of these connections should be as direct as possible. All remote-sense pins should be connected to the power bus at the same point, i.e., connect all the SENSE(+) pins to the (+) side of the bus. Close proximity and directness are necessary for good noise immunity
When not using the sequencing feature, share pins should be left unconnected.
Tunable LoopTM
The 12V Mega TLynxTM modules have a new feature that optimizes transient response of the TM module called Tunable Loop . External capacitors are usually added to the output of the module for two reasons: to reduce output ripple and noise (see Fig. 29) and to reduce output voltage deviations from the steady-state value in the presence of dynamic load current changes. Adding external capacitance however affects the voltage control loop of the module, typically causing the loop to slow down with sluggish response. Larger values of external capacitance could also cause the module to become unstable. The Tunable LoopTM allows the user to externally adjust the voltage control loop to match the filter network connected to the output of the module. The TM Tunable Loop is implemented by connecting a series R-C between the SENSE and TRIM pins of the module, as shown in Fig. 34. This R-C allows the user to externally adjust the voltage loop feedback compensation of the module.
*
Some special considerations apply for design of converters in parallel operation: * When sizing the number of modules required for parallel operation, take note of the fact that current sharing has some tolerance. In addition, under transient condtions such as a dynamic load change and during startup, all converter output currents will not be equal. To allow for such variation and avoid the likelihood of a converter shutting off due to a current overload, the total capacity of the paralleled system should be no more than 75% of the sum of the individual converters. As an example, for a system of four 12V Mega TM TLynx converters in parallel, the total current drawn should be less that 75% of (4 x 30A) , i.e. less than 90A. All modules should be turned on and off together. This is so that all modules come up at the same time avoiding the problem of one converter sourcing current into the other leading to an overcurrent trip condition. To ensure that all modules come up simultaneously, the on/off pins of all paralleled converters should be tied together and the converters enabled and disabled using the on/off pin. The share bus is not designed for redundant operation and the system will be non-functional upon failure of one of the unit when multiple units are in parallel. In particular, if one of the converters shuts down during operation, the other converters may also shut down due to their outputs hitting current limit. In such a situation, unless a coordinated restart is ensured, the system may never properly restart since different converters will try to restart at different times causing an overload condition and subsequent shutdown. This situation can be avoided by having an external output voltage monitor circuit that detects a shutdown condition and forces all converters to shut down and restart together.
VOUT SENSE
RTUNE
*
MODULE
CTUNE
CO
TRIM GND
RTrim
*
Figure. 34. Circuit diagram showing connection of RTUME and CTUNE to tune the control loop of the module. Recommended values of RTUNE and CTUNE for different output capacitor combinations are given in Tables 2 and 3. Table 2 shows the recommended values of RTUNE and CTUNE for different values of ceramic output capacitors up to 1000uF that might be needed for an application to meet output ripple and noise requirements. Selecting RTUNE and CTUNE according to Table 2 will ensure stable operation of the module. In applications with tight output voltage limits in the presence of dynamic current loading, additional
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Data Sheet November 11, 2010
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules: 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
output capacitance will be required. Table 3 lists recommended values of RTUNE and CTUNE in order to meet 2% output voltage deviation limits for some common output voltages in the presence of a 15A to 30A step change (50% of full load), with an input voltage of 12V. Please contact your Lineage Power technical representative to obtain more details of this feature as well as for guidelines on how to select the right value of external R-C to tune the module for best transient performance and stable operation for other output capacitance values or input voltages other than 12V. Table 2. General recommended values of of RTUNE and CTUNE for Vin=12V and various external ceramic capacitor combinations.
Co RTUNE CTUNE 1x47F 560 270pF 2x47F 390 470pF 4x47F 390 820pF 10x47F 20x47F 220 2200pF 220 4700pF
Table 3. Recommended values of RTUNE and CTUNE to obtain transient deviation of 2% of Vout for a 15A step load with Vin=12V.
Vo 3.3V 2.5V 1.8V 1.2V 0.8V 2x47F 2x47F+ 3x47F + 3x47F + 10 + 7x330F 3x330 3x330F 4x330F Polymer x330F F Polymer Polymer Polymer Polyme r 390 390 330 220 150 3900pF 50mV 6800pF 36mV 10nF 24mV 56nF 16mV 66mV
Co
RTUNE V
CTUNE 2200pF
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Data Sheet November 11, 2010
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules: 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
Thermal Considerations
Power modules operate in a variety of thermal environments; however, sufficient cooling should always be provided to help ensure reliable operation. Considerations include ambient temperature, airflow, module power dissipation, and the need for increased reliability. A reduction in the operating temperature of the module will result in an increase in reliability. The thermal data presented here is based on physical measurements taken in a wind tunnel. The test set-up is shown in Figure 35. Note that the airflow is parallel to the short axis of the module as shown in Figure 36. The derating data applies to airflow in either direction of the module's short axis.
25.4_ (1.0)
exceed 125 C. The output power of the module should not exceed the rated power of the module (Vo,set x Io,max). Please refer to the Application Note "Thermal Characterization Process For Open-Frame BoardMounted Power Modules" for a detailed discussion of thermal aspects including maximum device temperatures.
o
Wind Tunnel PWBs
AIRFLOW DIRECTION Figure 36. Preferred airflow direction and location of hot-spot of the module (Tref). Q6 & L2 Tref
Power Module
76.2_ (3.0)
x
12.7_ (0.50)
Probe Location for measuring airflow and ambient temperature
Air flow
Figure 35. Thermal Test Setup. The thermal reference points, Tref used in the specifications is shown in Figure 36. For reliable operation the temperatures at this point should not
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Data Sheet November 11, 2010
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules: 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
Example Application Circuit
Requirements: Vin: 12V Vout: 1.8V Iout: 22.5A max., worst case load transient is from 15A to 22.5A Vout: Vin, ripple 1.5% of Vout (27mV) for worst case load transient 1.5% of Vin (180mV, p-p)
CI1 CI2 CO1 CO2 CTune RTune RTrim
2x22F/16V ceramic capacitor (e.g. TDK C Series) 100F/16V bulk electrolytic 3x47F/6.3V ceramic capacitor (e.g. TDK C Series, Murata GRM32ER60J476ME20) 2x470F/4V Polymer/poscap, Low EST (e.g. Sanyo Poscap 4TPE470MCL/4TPF470ML) 15nF ceramic capacitor (can be 1206, 0805 or 0603 size) 430 ohms SMT resistor (can be 1206, 0805 or 0603 size) 8k SMT resistor (can be 1206, 0805 or 0603 size, recommended tolerance of 0.1%)
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Data Sheet November 11, 2010
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules: 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
Mechanical Outline of Module
Dimensions are in millimeters and (inches). Tolerances: x.x mm 0.5 mm (x.xx in. 0.02 in.) [unless otherwise indicated] x.xx mm 0.25 mm (x.xxx in 0.010 in.)
Pin No. 1 2 3 4 5 6 7 8 9 10
Function On/Off VIN SEQ GND VOUT TRIM SENSE GND SHARE GND
BOTTOM VIEW
SIDE VIEW
TOP VIEW
Co-planarity (max) : 0.102[0.004]
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Data Sheet November 11, 2010
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules: 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
Recommended Pad Layout
Dimensions are in millimeters and (inches). Tolerances: x.x mm 0.5 mm (x.xx in. 0.02 in.) [unless otherwise indicated] x.xx mm 0.25 mm (x.xxx in 0.010 in.)
Pin 8 Pin 10
PIN 1 2 3 4 5
FUNCTION On/Off VIN SEQ GND VOUT
PIN 6 7 8 9 10
FUNCTION Trim Sense GND SHARE GND
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Data Sheet November 11, 2010
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules: 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
Packaging Details
The 12V Mega TLynxTM SMT version is supplied in tape & reel as standard. Modules are shipped in quantities of 200 modules per reel.
All Dimensions are in millimeters and (in inches).
Reel Dimensions
Outside diameter: Inside diameter: Tape Width: 330.2 (13.0) 177.8 (7.0) 44.0 (1.73)
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Data Sheet November 11, 2010
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules: 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
Surface Mount Information
Pick and Place
The 12V Mega TLynx SMT modules use an open frame construction and are designed for a fully automated assembly process. The modules are fitted with a label designed to provide a large surface area for pick and place operations. The label meets all the requirements for surface mount processing, as well as safety standards, and is able to withstand reflow o temperatures of up to 300 C. The label also carries product information such as product code, serial number and location of manufacture.
TM
In a conventional Tin/Lead (Sn/Pb) solder process peak reflow temperatures are limited to less than 235oC. Typically, the eutectic solder melts at 183oC, wets the land, and subsequently wicks the device connection. Sufficient time must be allowed to fuse the plating on the connection to ensure a reliable solder joint. There are several types of SMT reflow technologies currently used in the industry. These surface mount power modules can be reliably soldered using natural forced convection, IR (radiant infrared), or a combination of convection/IR. For reliable soldering the solder reflow profile should be established by accurately measuring the modules CP connector temperatures.
300
P eak Temp 235oC
250
REFLOW TEMP (C)
200
Heat zo ne max 4oCs -1
Co o ling zo ne 1 oCs -1 -4
150
100
So ak zo ne 30-240s P reheat zo ne max 4oCs -1
Tlim above 205oC
50
Figure 37. Pick and Place Location.
0
Nozzle Recommendations
The module weight has been kept to a minimum by using open frame construction. Even so, these modules have a relatively large mass when compared to conventional SMT components. Variables such as nozzle size, tip style, vacuum pressure and pick & placement speed should be considered to optimize this process. The minimum recommended inside nozzle diameter for reliable operation is 3mm. The maximum nozzle outer diameter, which will safely fit within the allowable component spacing, is 5 mm max.
REFLOW TIME (S)
Figure 38. Reflow Profile for Tin/Lead (Sn/Pb) process.
240 235
MAX TEMP SOLDER (C)
230 225 220 215 210 205 200 0 10 20 30 40 50 60
Tin Lead Soldering
The 12V Mega TLynx SMT power modules are lead free modules and can be soldered either in a leadfree solder process or in a conventional Tin/Lead (Sn/Pb) process. It is recommended that the customer review data sheets in order to customize the solder reflow profile for each application board assembly. The following instructions must be observed when soldering these units. Failure to observe these instructions may result in the failure of or cause damage to the modules, and can adversely affect long-term reliability.
TM
Figure 39. Time Limit Curve Above 205oC Reflow for Tin Lead (Sn/Pb) process.
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Data Sheet November 11, 2010
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules: 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
Surface Mount Information (continued)
Lead Free Soldering
The -Z version 12V Mega TLynx modules are leadfree (Pb-free) and RoHS compliant and are both forward and backward compatible in a Pb-free and a SnPb soldering process. Failure to observe the instructions below may result in the failure of or cause damage to the modules and can adversely affect long-term reliability. Pb-free Reflow Profile Power Systems will comply with J-STD-020 Rev. C (Moisture/Reflow Sensitivity Classification for Nonhermetic Solid State Surface Mount Devices) for both Pb-free solder profiles and MSL classification procedures. This standard provides a recommended forced-air-convection reflow profile based on the volume and thickness of the package (table 4-2). The suggested Pb-free solder paste is Sn/Ag/Cu (SAC). The recommended linear reflow profile using Sn/Ag/Cu solder is shown in Figure. 38.
Modules: Soldering and Cleaning Application Note (AN04-001).
MSL Rating
The 12V Mega TLynxTM SMT modules have a MSL rating of 2.
Storage and Handling
The recommended storage environment and handling procedures for moisture-sensitive surface mount packages is detailed in J-STD-033 Rev. A (Handling, Packing, Shipping and Use of Moisture/Reflow Sensitive Surface Mount Devices). Moisture barrier bags (MBB) with desiccant are required for MSL ratings of 2 or greater. These sealed packages should not be broken until time of use. Once the original package is broken, the floor life of the product at conditions of <= 30C and 60% relative humidity varies according to the MSL rating (see J-STD-033A). The shelf life for dry packed SMT packages will be a minimum of 12 months from the bag seal date, when stored at the following conditions: < 40 C, < 90% relative humidity.
Post Solder Cleaning and Drying Considerations
Post solder cleaning is usually the final circuit-board assembly process prior to electrical board testing. The result of inadequate cleaning and drying can affect both the reliability of a power module and the testability of the finished circuit-board assembly. For guidance on appropriate soldering, cleaning and drying procedures, refer to Board Mounted Power
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Data Sheet November 11, 2010
12V Mega TLynxTM: Non-Isolated DC-DC Power Modules: 6.0 - 14Vdc Input; 0.8Vdc to 3.63Vdc Output; 30A output current
Ordering Information
Table 4. Device Codes Product codes APTS030A0X3-SRPHZ Table 5. Coding Scheme TLynx Sequencing Input voltage Output current family feature. range AP T T = with Seq. S S = 6 - 14V 030A0 30A Output voltage X X= programmable output Options -SR S = Surface Mount R = Tape&Reel P = Paralleling ROHS Compliance Z Z = ROHS6 Input Voltage 6.0 - 14Vdc Output Voltage 0.8 - 3.63Vdc Output Current 30A On/Off Logic Negative Connector Type SMT Comcodes CC109138351
Table 6. Device Options Option Current Share 2 Extra ground pins RoHS Compliant Device Code Suffix -P -H -Z
Asia-Pacific Headquarters Tel: +65 6593 7211 Europe, Middle-East and Africa Headquarters Tel: +49 898 780 672 80 India Headquarters Tel: +91 80 28411633
World Wide Headquarters Lineage Power Corporation 601 Shiloh Road, Plano, TX 75074, USA +1-800-526-7819 (Outside U.S.A.: +1-972-244-9428) www.lineagepower.com e-mail: techsupport1@lineagepower.com
Lineage Power reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information. Lineage Power DC-DC products are protected under various patents. Information on these patents is available at www.lineagepower.com/patents. (c) 2009 Lineage Power Corporation, (Plano, Texas) All International Rights Reserved.
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23 Document No: DS09-003 ver 1.08 PDF Name: APTS030A0X3_ds.pdf

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