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(R)
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INNOVATION and EXCELLENCE
Dual Output
Mixed Voltage, BWR Models
5V and 3.3V, 2" x 2" 33 Watt, DC/DC Converters
Features
! ! ! ! !
Regulated 3.3V and 5V outputs 5V @ 6Amps/3.3V @ 7 Amps capability 33 Watts total output power No-load operation Available input voltage ranges: 10-18V, 18-36V or 36-75V Small 2" x 2" x 0.45" package UL1950 and EN60950 safety approvals mark available (75V-input models) Continuous short-circuit protection Fully isolated, 1500Vdc guaranteed -40 to +100C operating temperature Input under and overvoltage shutdown Output overvoltage protection Thermal shutdown
! ! ! ! ! ! ! ! !
For applications requiring 33 Watts of power from 5V and 3.3V, DATEL offers a new power sharing DC/DC converter capable of meeting your output current requirements. The BWR-5/6-3.3/7-D48 (36-75V input), BWR-5/6-3.3/7-D24 (18-36V input) and BWR-5/6-3.3/7-D12 (10-18V input) are fully isolated DC/DC converters capable of delivering any combination of 5V and 3.3V loading up to a combined total of 33 Watts of output power. Housed in a standard 2" x 2" x 0.45" metal package coated with electrically nonconductive finish, these converters utilize a shared control-loop system to assure load regulation of 1% for 3.3V output and 1.5% for 5V output. All models include input Pi filtering, input overvoltage and undervoltage shutdown circuitry, output overvoltage protection, output short-circuit and current limiting protection, and thermal shutdown. Each design also provides trim capability and on/off control function. Fully synchronous output rectification renders high efficiency and no-load operation. BWR power sharing modules offer low ripple and noise performance, high efficiency (88%), 1500Vdc of isolation voltage, and are fully specified for -40 to +100C operation. These devices meet IEC950, UL1950 and EN6950 safety standards, including BASIC insulation requirements for "D48" models. CB reports are available on request. "D48" models are CE marked (meet LVD requirements).
+INPUT (1)
+5V OUTPUT (5)
SWITCH CONTROL +3.3V OUTPUT (7)
-INPUT (2) ON/OFF CONTROL (4) PWM CONTROLLER
OUTPUT RETURN (6) ACTIVE BLEEDER
OPTO ISOLATION UV & OV COMPARATORS THERMAL SHUTDOWN
REFERENCE & ERROR AMP TRIM (8)
Figure 1. Simplified Schematic
DATEL, Inc., Mansfield, MA 02048 (USA) * Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 * Email: sales@datel.com * Internet: www.datel.com
XWR Series
3 3 W, D UA L O U T P U T, M I X E D - VO LTAG E D C / D C C O N V E R T E R S
Performance Specifications and Ordering Guide
VOUT (Volts)
5 3.3 5 3.3 5 3.3
Input Regulation (Max.) Package (Case, Pinout)
C4, P33 C4, P33 C4, P33
Model
BWR-5/6-3.3/7-D12 BWR-5/6-3.3/7-D24 BWR-5/6-3.3/7-D48
IOUT (Amps)
6 7 6 7 6 7
Output R/N (mVp-p) Typ.
40 95 40 95 40 95
Max.
100 140 100 140 100 140
Line
1% 0.5% 1% 0.5% 1% 0.5%
Load No Load
1.5% 1% 1.5% 1% 1.5% 1% 2.5% 1.5% 2.5% 1.5% 2.5% 1.5%

VIN Nom. (Volts)
12 24 48
Range (Volts)
10-18 18-36 36-75
IIN (mA)
70/3308 50/1615 25/780
Efficiency Min.
83% 85% 85%
Typ.
86% 88% 88%
Typical at TA = +25C under nominal line voltage and balanced "full-load" conditions (5V @ 3.3A/3.3V @ 5A). Any combination of 5V/3.3V rated IOUT current, not to exceed 33 Watts of output power. (See derating graphs.) Ripple/Noise (R/N) measured over a 20MHz bandwidth. All models are specified with 1F ceramic output capacitors.
Tested from 10% load to 100% load (other output at 10% load). Nominal line voltage, no load/balanced full-power condition. Tested from no-load to 100% load (other output at no-load). Output trim may impact 5V load regulation.
PA R T N U M B E R S T R U C T U R E
BWR - 5 / 6 - 3.3 / 7 - D48 LX
Dual Output/ Mixed-Voltage Series V1 Nominal Output Voltage: 5 Volts I1 Maximum Output Current: 6 Amps Optional Functions Input Voltage Range: D12 = 10-18 Volts (12V nominal) D24 = 18-36 Volts (24V nominal) D48 = 36-75 Volts (48V nominal)
Optional Functions
BWR 33 Watt DC/DC's are designed with an On/Off Control function with positive polarity in the pin 4 position. L1 L2 Pin length: 0.110 in. (2.79mm) 0.010 Pin length: 0.145 in. (3.68mm) 0.010
Refer to the last page for additional options.
V2 Nominal Output Voltage: 3.3 Volts I2 Maximum Output Current: 7 Amps
M E C H A N I C A L S P E C I F I C AT I O N S
2.00 (50.80) METAL CASE
0.45 (11.43)
Case C4
INSULATED BASE 0.20 MIN (5.08) 0.040 0.002 DIA. (1.016 0.051)
1.800 (45.72)
0.10 (2.54)
I/O Connections Pin 1 2 3 4 5 6 7 8 Function P33 +Input -Input No Pin On/Off Control +5V Output Output Return +3.3V Output Trim Notes: For "D12" and "D24" models the case is connected to pin 2 (-Input). For "D48" models, the case is connected to pin 1 (+Input).
0.200 (5.08)
5
6 1 2 0.400 (10.16) 4 8 0.100 (2.54) BOTTOM VIEW 7
1.200 (30.48) 3 EQ. SP. @ 0.400 (10.16)
2.00 (50.80)
0.40 (10.16)
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3 3 W, D UA L O U T P U T, M I X E D - VO LTAG E D C / D C C O N V E R T E R S
BWR Models
Performance/Functional Specifications
Typical @ TA = +25C under nominal line voltage, balanced "full-load" conditions, unless noted.
Input
Input Voltage Range: D12 Models D24 Models D48 Models Overvoltage Shutdown: D12 Models D24 Models D48 Models Start-Up Threshold: D12 Models D24 Models D48 Models Undervoltage Shutdown: D12 Models D24 Models D48 Models Input Current: Normal Operating Conditions Standby Mode: Off, OV, UV, Thermal Shutdown Input Reflected Ripple Current: Source Impedance D12 Models D24/D48 Models Internal Input Filter Type Reverse-Polarity Protection: D12 Models D24 Models D48 Models On/Off Control (Pin 4): D12, D24 & D48 Models 10-18 Volts (12V nominal) 18-36 Volts (24V nominal) 36-75 Volts (48V nominal) 19-23 Volts (21V nominal) 37-42 Volts (40V nominal) 77-81 Volts (79V nominal) 9-10 Volts (9.3V nominal) 16.5-18 Volts (17V nominal) 34-36 Volts (35V nominal) 8.5-9.6 Volts (9.3V nominal) 16-17 Volts (16.5V nominal) 32.5-35 Volts (34V nominal) See Ordering Guide 10mA typical <0.1, no external input filtering 200mAp-p (150mAp-p typical) 250mAp-p (225mAp-p typical) Pi (0.022F - 4.7H - 2.46F) 1 minute duration, 6A maximum 1 minute duration, 4A maximum 1 minute duration, 2A maximum On = open or 13V to +VIN, IIN = 50A max. Off = 0-0.8V, IIN = 1mA max. Short Circuit Current: 5V Output 3.3V Output Overvoltage Protection: 5V Output 3.3V Output Maximum Capacitive Loading D12 Models 3.3V 5V D24, D48 Models 3.3V 5V
Output (continued)
5 Amps average, continuous 6 Amps average, continuous Magnetic feedback 6.8 volts 4.5Volts 1000F 470F 2000F 1000F
Dynamic Characteristics
Dynamic Load Response: 300sec maximum 5V (50-100% load step to 4% VOUT) 3.3V (50-100% load step to 2.5% VOUT) 300sec maximum Start-Up Time: VIN to VOUT On/Off to VOUT Switching Frequency MTBF D12 Models D24/D48 Models Operating Temperature (Ambient): Without Derating: D12 Models D24 Models D48 Models With Derating Case Temperature: Maximum Operational For Thermal Shutdown Storage Temperature Dimensions Internal Case Connection: D12/D24 Models D48 Models Case Material 20msec maximum 15msec maximum 285kHz (15kHz)
Environmental
Bellcore, ground fixed, full power, +25C operating ambient temperature 1.3 million hours 1.67 million hours
-40 to +50C -40 to +60C -40 to +68C To +100C (See Derating Curves) +100C +110C minimum, +117C maximum -40 to +120C
Output
VOUT Accuracy: 5V Output 3.3V Output Minimum Loading Per Specification Ripple/Noise (20MHz BW) Line/Load Regulation Efficiency 3% maximum 1.5% maximum No load, see Performance Specifications See Ordering Guide See Ordering Guide See Ordering Guide / Efficiency Curves
Physical
2" x 2" x 0.45" (50.8 x 50.8 x 11.43mm) -Input (Pin 2) +Input (Pin 1) Corrosion resistant steel with non-conductive, epoxy-based, black enamel finish and plastic baseplate Brass, solder coated 2.7 ounces (76.5 grams)
Cross Regulation: 5V Output (5V@0.6A, 3.3V@0.7-7A) 6% maximum 3.3V Output (3.3V@0.7A, 5V@0.6-6A) 0.5% maximum Trim Range Isolation Voltage: Input-to-Output Isolation Capacitance Isolation Resistance 5% 1500Vdc minimum 470pF 100M
Pin Material Weight:
Primary to Secondary Insulation Level D12/D24 Models Operational D48 Models Basic Temperature Coefficient Current Limit Inception: 5V @ 95% VOUT (3.3V @ 0A) 3.3V @ 98.5% VOUT (5V @ 0A) 0.02%/perC 7.6-9.0 Amps 11.3-12.7 Amps
Balanced "full-load" is 5V @ 3.3A/3.3V @ 5A. All models are specified with external 1F ceramic output capacitors. See Technical Notes/Graphs for details. Applying a voltage to On/Off Control (pin 4) when no input power is applied to the converter may cause permanent damage. Output noise may be further reduced with the installation of additional external output capacitors. See Technical Notes. On/Off control is designed to be driven with open collector or by appropriate voltage levels. Voltages must be referenced to the input return pin (-Input). Demonstrated MTBF available on request.
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3 3 W, D UA L O U T P U T, M I X E D - VO LTAG E D C / D C C O N V E R T E R S
Absolute Maximum Ratings
Input Voltage: Continuous: "D12" Models "D24" Models "D48" Models Transient (100msec): "D12" Models "D24" Models "D48" Models 23 Volts 42 Volts 81 Volts 25 Volts 50 Volts 100 Volts Input Current must be limited. 1 minute duration. Fusing recommended. 6 Amps 4 Amps 2 Amps Current limited. Devices can withstand an indefinite output short circuit. +VIN -40 to +120C +300C
Start-Up Time The VIN to VOUT start-up time is the interval of time where the input voltage crosses the turn-on threshold point, and the fully loaded output voltage enters and remains within its specified accuracy band. Actual measured times will vary with input source impedance, external input/output capacitance, and the slew rate of the input voltages. The BWR-5/6-3.3/7 Series implements a soft start circuit that limits the duty cycle of the PWM controller at power up, thereby limiting the Input Inrush current. The On/Off Control to VOUT start-up time assumes the converter has its nominal input voltage applied but is turned off via the On/Off Control pin. The specification defines the interval between the time at which the converter is turned on and the fully loaded output voltage enters and remains within its specified accuracy band. Similar to the VIN to VOUT start-up, the On/Off Control to VOUT start-up time is also governed by the internal soft start circuitry and external load capacitance. Input Overvoltage/Undervoltage Shutdown and Start-Up Threshold Under normal start-up conditions, devices will not begin to regulate until the ramping-up input voltage exceeds the Start-Up Threshold Voltage (35V for "D48" models). Once operating, devices will not turn off until the input voltage drops below the Undervoltage Shutdown limit (34V for "D48" models). Subsequent re-start will not occur until the input is brought back up to the Start-Up Threshold. This built in hysteresis prevents any unstable on/off situations from occurring at a single input voltage. Input voltages exceeding the input overvoltage shutdown specification listed in the Performance/Functional Specifications will cause the device to shutdown. A built-in hysteresis of 0.6 to 1.6 Volts for all models will not allow the converter to restart until the input voltage is sufficiently reduced. On/Off Control The On/Off Control (pin 4) may be used for remote on/off operation. As shown in Figure 1, the control pin is referenced to the -Input (pin 2) and will be internally pulled to a high state. The standard BWR model (no suffix) is designed so that it is enabled when the control pin is left open and disabled when the control pin is pulled low (less than +0.8V relative to -Input). Dynamic control of the on/off function is best accomplished with a mechanical relay or an open-collector/open-drain circuit (optically isolated if appropriate). The drive circuit should be able to sink approximately 1 mA for logic low. The on/off control function is designed such that the converter can be disabled while the input power is ramping up, and then "released" once the input has stabilized.
1 +INPUT
Input Reverse-Polarity Protection "D12" Models "D24" Models "D48" Models Output Current On/Off Control (Pin 4) Max. Voltages Referenced to -Input (pin 2) Storage Temperature Lead Temperature (Soldering, 10 sec.)
These are stress ratings. Exposure of devices to any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those listed in the Performance/Functional Specifications Table is not implied, nor recommended.
TECHNICAL NOTES
5V & 3.3V Regulation The BWR 33 Watt Series converters are designed such that both the 5V and 3.3V outputs share a common regulation feedback control loop. Though the feedback loop is influenced by both outputs, the 3.3 Volt output is dominant. As a result, the 3.3 Volt regulation (1%) is superior to the 5 Volt regulation (1.5%). The converters are specified for load regulation of 10% to 100% loading and for no-load to 100% loading. Operation below 10% of full load mandates an increase in the regulation tolerance of 0.5% for 3.3 Volt output and an increase of 1% for the 5 Volt output. A slight increase in switching noise may also be observed for operation below 10% loading. Operation with a full load on 3.3 Volt output and light to no load on 5 Volt output is the most demanding for +5V regulation. Under such conditions the internal "bleeder" circuit is activated to provide an internal load thereby keeping regulation within the published specifications. The bleeder is activated gradually so as not to cause any erratic behavior on the converters outputs. A slight degradation in efficiency will occur while this internal load is activated. Filtering and Noise Reduction The BWR 33 Watt Series Converters achieve their rated ripple and noise specifications with the use of 1F output capacitors. In critical applications, input/output noise may be further reduced by installing additional external I/O capacitors. Input capacitors should be selected for bulk capacitance, low ESR and high rms-ripple-current ratings. Output capacitors should be selected for low ESR and appropriate frequency response. All caps should have appropriate voltage ratings and be located as close to the converter as possible.
RA 4 ON/OFF CONTROL RB 2
D12 RA = 34.8k, RB = 6.83k D24 RA = 100k, RB = 9.74k D48 RA = 100k, RB = 4.53k
-INPUT
Figure 1. Internal Circuitry for On/Off Control
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BWR Models
Current Limiting When power demands from either output fall within 126% to 181% of the rated output current, the DC/DC converter will go into a current limiting mode. In this condition both output voltages will decrease proportionately with increases in output current, thereby maintaining a somewhat constant power dissipation. This is commonly referred to as power limiting (see Figures 2a and 2b). Current limit inception is defined as the point where the full-power output voltage falls below the specified tolerance. If the load current being drawn from the converter is significant enough, the unit will go into a short circuit condition. See "Short Circuit Condition."
Short Circuit Condition When a converter is in current limit mode the output voltages will drop as the output current demand increases (see figures 2a and 2b). If the output voltage drops too low, the magnetically coupled voltage used to develop primary side voltages will also drop, thereby shutting down the PWM controller. Following a time-out period of 5 to 15 milliseconds, the PWM will restart, causing the output voltages to begin ramping to their appropriate values. If the short-circuit condition persists, another shutdown cycle will be initiated. This on/off cycling is referred to as "hiccup" mode. The hiccup cycling reduces the average output current, thereby preventing internal temperatures from rising to excessive levels. The BWR is capable of enduring an indefinite short circuit output condition. Thermal Shutdown These BWR converters are equipped with Thermal Shutdown Circuitry. If the internal temperature of the DC/DC converter rises above the designed operating temperature, a precision temperature sensor will power down the unit. When the internal temperature decreases below the threshold of the temperature sensor the unit will self start.
VIN NOM, VIN LO All Models VIN HI D12, D24 Models VIN HI D48 Models
Typical Current Limiting Characteristics for 3.3V Output
4
Ouput Voltages (Volts)
3
2
Output Overvoltage Protection Both output voltages are monitored for an overvoltage condition via magnetic coupling to the primary side. If either output voltage should rise to a level which could be damaging to the load circuitry, the sensing circuitry will power down the PWM controller causing the output voltages to decrease. Following a time-out of 5 to 15 milliseconds the PWM will restart, causing the output voltages to ramp to their appropriate values. If the fault condition persists, and the output voltages again climb to excessive levels, the overvoltage circuitry will initiate another shutdown cycle. This on/off cycling is referred to as "hiccup" mode.
1
0 0 2 4 6 8 10 12 14 3.3 VOUT Average Ouput Current (Amps)
Figure 2a. Current Limiting Characteristics for 3.3V Output
Typical Current Limiting Characteristics for 5V Output (3.3V Output @ 700mA)
5 4.5 4 3.5 3 Ouput Voltages (Volts) 2.5 2 1.5 1 0.5 0 0 1 2 3 4 5 6 7 8 9 5 VOUT Average Ouput Current (Amps) VIN NOM, VIN LO All Models VIN HI D12, D24 Models VIN HI D48 Models
Figure 2b. Current Limiting Characteristics for 5V Output
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XWR Series
3 3 W, D UA L O U T P U T, M I X E D - VO LTAG E D C / D C C O N V E R T E R S
Isolation / Case Connection The BWR 33 Watt Series' 5V and 3.3V outputs (pins 5 & 7) and return (pin 6) are isolated from the +VIN and -VIN inputs (pins 1 & 2) via a transformer and an opto-coupled transistor. Case connections are made internal to the DC/DC converter. "D12 & D24" cases are connected to -Input (pin 2), "D48" to +Input (pin 1). Input Reverse-Polarity Protection Upon applying a reverse-polarity voltage to the DC/DC converter, an internal diode will be forward biased, drawing excessive current from the power source. Therefore, it is required that the input current be limited be either an appropriately rated input fuse or a current limited power source. Input Fusing Certain applications and/or safety agencies may require the installation of fuses at the inputs of power conversion components. Fuses should also be used if the possibility of a sustained, non-current-limited, input-voltage polarity reversal exists. For DATEL BWR 33 Watt Series Converters, slow blow fuses are recommended with values no greater than the following. VIN Range "D12" Models "D24" Models "D48" Models Fuse Value 6 Amps 4 Amps 2 Amps
1 +INPUT 2 -INPUT OUTPUT RETURN 6 +3.3V LOAD 4 ON/OFF CONTROL +3.3V OUTPUT TRIM 7 1 +INPUT 2 -INPUT +5V OUTPUT 5 +5V LOAD OUTPUT RETURN 6 20k 5-22 Turns +3.3V LOAD
4
ON/OFF CONTROL
+3.3V OUTPUT TRIM
7
8
Figure 3. Trim Connections using a Trimpot
+5V OUTPUT
5 +5V LOAD
8
R TRIM DOWN
Figure 4. Decrease Output Voltage Trim Connections Using A Fixed Resistor Trim Down
It is recommended that fuses be installed in the +Input line. Trimming Output Voltages These BWR converters have a trim capability (pin 8) that allow users to adjust the output voltages 5%. A trim adjustment will cause an equal percentage of change in both outputs. Adjustments to the output voltages can be accomplished via a trim pot Figure 3 or a single fixed resistor as shown in Figures 4 and 5. A single fixed resistor can increase or decrease the output voltage depending on its connection. Fixed resistors should be metal-film types with absolute TCR's less than 100ppm/C to minimize sensitivity to changes in temperature. A single resistor connected from the Trim Pin (pin 8) the +3.3V Output (pin 7), see Figure 4, will decrease the output voltages. A resistor connected from the Trim Pin (pin 8) to Output Return (pin 6) will increase the output voltages. Table 1 shows the typical Trim Resistor values for output voltage changes of 1 through 5%. Trim adjustment greater than 5% can have an adverse affect on the converter's performance and is not recommended.
RTUP (k) = RTDOWN (k) =
e
3.55(VO - 1.273) 3.3 - VO
j
-13
1 +INPUT 2 -INPUT
+5V OUTPUT
5 +5V LOAD
OUTPUT RETURN
6 +3.3V LOAD
4
ON/OFF CONTROL
+3.3V OUTPUT TRIM
7
8
R TRIM UP
Figure 5. Increase Output Voltage Trim Connections Using A Fixed Resistor Trim Up
e
4.51 VO - 3.3
j
-13
Trim Down 0% 1% 2% 3% 4% 5% - 201.5k 92.5k 56.1k 38k 27.1k
Trim Up - 123.7k 55.3k 32.6k 21.2k 14.3k
Note: Accuracy of adjustment is subject to the tolerances of resistor values, reference accuracy and factory-adjusted output accuracy. VO = desired output voltage.
Table 1. Percentage of Output Voltage Change vs Trim Resistor Value (Ohms)
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BWR Models
Typical Performance Curves D12 Model
Input Ripple Current (VIN = 18V, 5V @ 3A, 3.3V@ 4.5A,
no external filtering, source impedance <0.1.)
D12, D24, D48 Models
Output Ripple and Noise (PARD) (VIN = nominal, 5V@3A, 3.3V @ 4.5A, external 1F output capacitors.)
5V Output Ripple/Noise 50mV/div 20MHz BW 50mA/div
3.3V Output Ripple/Noise 50mV/div 20MHz BW
1sec/div 1sec/div
D24 Model
Input Ripple Current (VIN = 36V, 5V @ 3A, 3.3V@ 4.5A,
no external filtering, source impedance <0.1.)
Output Ripple and Noise (PARD) (VIN = nominal, 5V@0A, 3.3V @ 7A, external 1F output capacitors.)
5V Output Ripple/Noise 50mV/div 20MHz BW
50mA/div
3.3V Output Ripple/Noise 50mV/div 20MHz BW
1sec/div
1sec/div
D48 Model
Input Ripple Current (VIN = 75V, 5V @ 3A, 3.3V@ 4.5A,
no external filtering, source impedance <0.1.)
Output Ripple and Noise (PARD) (VIN = nominal, 5V@ 6A, 3.3V @ 0A, external 1F output capacitors.)
5V Output Ripple/Noise 50mV/div 20MHz BW
50mA/div
3.3V Output Ripple/Noise 50mV/div 20MHz BW
1sec/div
1sec/div
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XWR Series
3 3 W, D UA L O U T P U T, M I X E D - VO LTAG E D C / D C C O N V E R T E R S
Typical Performance Curves D12, D24, D48 Models
5V Output Half-Load to Full-Load Transient Response
(VIN = nominal, 3.3V@ 700mA, external 1F output capacitors.)
D12, D24, D48 Models
3.3V Output Half-Load to Full-Load Transient Response
(VIN = nominal, 5V@ 600mA, external 1F output capacitors.)
5V Output 100mV/div
3.3V Output 100mV/div
6A Output Current 2A/div Output Current 2A/div
7A
3A
3.5A
100sec/div
100sec/div
5V Output Full-Load to Half-Load Transient Response
(VIN = nominal, 3.3V@ 700mA, external 1F output capacitors.)
3.3V Output Full-Load to Half-Load Transient Response
(VIN = nominal, 5V@ 600mA, external 1F output capacitors.)
5V Output 100mV/div
3.3V Output 100mV/div
6A Output Current 2A/div Output Current 2A/div
7A
3A
3.5A
100sec/div
100sec/div
Cross Regulation Effects on +3.3VOUT
(Reference Point 5V @ 3.9A, 3.3V @ 4A) 0.8 4.0 3.0
Cross Regulation Effects On +5VOUT
(Reference Point 5V @ 4A, 3.3V @ 3.9A)
Percentage of Change on 3.3 VOUT (%)
3.3V @ 0A 0.4 3.3V @ 2A 0.2
Percentage of Change in +5 VOUT (%)
0.6
5V @ 0A 2.0 5V @ 2A 1.0 0 -1.0 -2.0 5V @ 6A -3.0 5V @ 4A
0 3.3V @ 4A -0.2 3.3V @ 6A
-0.4 3.3V @ 7A -0.6 0 1 2 3 4 5 6 5 Volt Output Current (Amps)
-4.0 0 1 2 3 4 5 6 7 3.3 Volt Current (Amps)
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BWR Models
Typical Performance Curves D12, D24, D48 Models
Start-Up from VIN
(VIN = nominal, 5V@ 3A, 3.3V @ 4.5A, external 1F output capacitors.)
D12, D24, D48 Models
Start-Up from Remote On/Off Control
(VIN = nominal, 5V@ 3A, 3.3V @ 4.5A, external 1F output capacitors.)
5V Output 2V/div 3.3V Output 2V/div
5V Output 2V/div 3.3V Output 2V/div
VIN
Remote On/Off (Pin 4)
2msec/div
2msec/div
D12 Models
D12 - 3.3 Volt Output Efficiency vs. Line and Load (+5V @ 600mA) 90
VIN = 10V
D24, D48 Models
D24/D48 - 3.3 Volt Output Efficiency vs. Line and Load (+5V @ 600mA) 95 90 85
VIN = MIN
85
Efficiency (%)
Efficiency (%)
80
VIN = 12V
80 75 70
VIN = MAX VIN = NOMINAL
75
VIN = 18V
70
65 60
65 55 60 0.70 50 1.40 2.10 2.80 3.50 4.20 4.90 5.60 6.30 7.00 0 0.78 1.56 2.33 3.11 3.89 4.67 5.44 6.22 7.00 +3.3V Output Current (Amps) D12 - 5 Volt Output Efficiency vs. Line and Load (+3.3V @ 700mA) 90
VIN = 10V
+3.3V Output Current (Amps) D24/D48 - 5 Volt Output Efficiency vs. Line and Load (+3.3V @ 700mA) 95 90 85
VIN = MIN
85
Efficiency (%)
VIN = 12V
Efficiency (%)
80
80 75 70
VIN = MAX VIN = NOMINAL
75
70
VIN = 18V
65 60 55
65
60 0.60
50 1.20 1.80 2.40 3.00 3.60 4.20 4.80 5.40 6.00 0 0.67 1.33 2.00 2.67 3.33 4.00 4.67 5.33 6.00 +5V Output Current (Amps) +5V Output Current (Amps)
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3 3 W, D UA L O U T P U T, M I X E D - VO LTAG E D C / D C C O N V E R T E R S
Temperature Derating and Electrical Performace Curves D12 Models
Output Power vs. Ambient Temperature VIN = 12V, Natural Convection Air flow
35 35
D24 Models
Output Power vs. Ambient Temperature VIN = 24V, Natural Convection Air flow
30
30
Output Power (Watts)
Output Power (Watts)
25
25
20
20
15 Loading (5V @ 1.98A, 3.3V @ 7A) 10 Loading (5V @ 3.74A, 3.3V @ 4.33A) Loading (5V @ 5.1A, 3.3V @ 2.3A) 5 Loading (5V @ 6A, 3.3V @ 0.7A)
15 Loading (5V @ 1.98A, 3.3V @ 7A) 10 Loading (5V @ 3.74A, 3.3V @ 4.33A) Loading (5V @ 5.1A, 3.3V @ 2.3A) 5 Loading (5V @ 6A, 3.3V @ 0.7A)
0 -40
0
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95 100
0 -40
0
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95 100
Ambient Temperature (C)
Ambient Temperature (C)
Output Power vs. Ambient Temperature VIN = 18V, Natural Convection Air flow
35 35
Output Power vs. Ambient Temperature VIN = 36V, Natural Convection Air flow
30
30
Output Power (Watts)
25
Output Power (Watts)
25
20
20
15 Loading (5V @ 1.98A, 3.3V @ 7A) 10 Loading (5V @ 3.74A, 3.3V @ 4.33A) Loading (5V @ 5.1A, 3.3V @ 2.33A) 5 Loading (5V @ 6A, 3.3V @ 0.7A)
15 Loading (5V @ 1.98A, 3.3V @ 7A) 10 Loading (5V @ 3.74A, 3.3V @ 4.33A) Loading (5V @ 5.1A, 3.3V @ 2.3A) 5 Loading (5V @ 6A, 3.3V @ 0.7A)
0 -40
0
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95 100
0 -40
0
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95 100
Ambient Temperature (C)
Ambient Temperature (C)
Output Power vs. Ambient Temperature VIN = Nominal, 5V @ 3.74A/3.3V @ 4.33A
35 35
Output Power vs. Ambient Temperature VIN = Nominal, 5V @ 3.74A/3.3V @ 4.33A
30
30
Output Power (Watts)
Output Power (Watts)
25
25
20
20
15 Natural Convection Air FlowLoading 10 150lfm Air Flow 300lfm Air Flow 5
15 Natural Convection Air FlowLoading 10 150lfm Air Flow 300lfm Air Flow 5
0 -40
0
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95 100
0 -40
0
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95 100
Ambient Temperature (C)
Ambient Temperature (C)
10
3 3 W, D UA L O U T P U T, M I X E D - VO LTAG E D C / D C C O N V E R T E R S
BWR Models
Temperature Derating and Electrical Performace Curves D48 Models
Output Power vs. Ambient Temperature VIN = 48V, Natural Convection Air flow
35
30
Output Power (Watts)
25
20
15 Loading (5V @ 1.98A, 3.3V @ 7A) 10 Loading (5V @ 3.74A, 3.3V @ 4.33A) Loading (5V @ 5.1A, 3.3V @ 2.33A) 5 Loading (5V @ 6A, 3.3V @ 0.7A)
0 -40
0
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95 100
Ambient Temperature (C)
Output Power vs. Ambient Temperature VIN = 75V, Natural Convection Air flow
35
30
Output Power (Watts)
25
20
15 Loading (5V @ 1.98A, 3.3V @ 7A) 10 Loading (5V @ 3.74A, 3.3V @ 4.33A) Loading (5V @ 5.1A, 3.3V @ 2.33A) 5 Loading (5V @ 6A, 3.3V @ 0.7A)
0 -40
0
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95 100
Ambient Temperature (C)
Output Power vs. Ambient Temperature VIN = Nominal, 5V @ 3.74A/3.3V @ 4.33A
35
30
Output Power (Watts)
25
20
15
10
Natural Convection Air FlowLoading 150lfm Air Flow 300lfm Air Flow
5
0 -40
0
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95 100
Ambient Temperature (C)
11
XWR Series Options and Adaptations
Optional Functions
3 3 W, D UA L O U T P U T, M I X E D - VO LTAG E D C / D C C O N V E R T E R S
M E C H A N I C A L S P E C I F I C AT I O N S
Model BWR-5/6-3.3/7-D48-30745
2.00 (50.08) PLASTIC CASE
The dual output BWR 33W DC/DC converters offer two mechanical options. Per the Ordering Guide on page 2, the trailing DXX in each part number pertains to the base part number. Part-number suffixes are added after the "DXX," indicating the selection of standard options. The resulting part number is a "standard product" and is available to any customer desiring that particular combination of options, as described below. Suffix Blank L1 L2 Description On/Off Control function with positive polarity in pin 4 position. The pin length is 0.2 inches (5.08 mm). Trim the pin length to 0.110 0.010 inches (2.79 0.25mm). This option requires a 100-piece minimum order quantity. Trim the pin length to 0.145 0.010 inches (3.68 0.25mm). This option requires a 100-piece minimum order quantity.
0.48 (12.19)
Case C22
0.040 0.001 DIA. (1.016 0.025) 0.20 MIN (5.08) 1.800 (45.72) 0.10 (2.54) STANDOFF 0.020 (0.51)
0.200 (5.08)
5
6 1 2 7 4 8
0.100 (2.54)
Adaptations There are various additional configurations available on BWR 33W DC/DC's. Because designating each of them with a standard part-number suffix is not always feasable, such are designated by DATEL in assigning a 5-digit "adaptation code" after the part-number suffixes. Once a configuration has been requested by a customer and created by DATEL, the resulting product is available to any customer as a "standard" off-the-shelf product. Contact DATEL directly if you are interested in your own set of options/adaptations. Our policy for minimum order quantities may apply. Consequently, the following product is offered for sale: BWR-5/6-3.3/7-D48-30745 Standard product, 48VIN, 5V/6A and 3.3V/7A outputs with modified case/pin out C22/P61 (LW016FA compatible), negative On/Off logic, modified Trim function for 3.3VOUT (no trim for 5 VOUT) and trimmed pin length to 0.125 inches (3.2 mm).
0.400 (10.16)
1.200 (30.48) 3 EQ. SP. @ 0.400 (10.16)
2.00 (50.08)
0.40 (10.16)
BOTTOM VIEW
DIMENSIONS ARE IN INCHES (MM)
I/O Connections Pin 1 2 3 4 5 6 7 8 Function P61 +Input -Input No Pin On/Off Control +3.3V Output Output Return +5V Output +3.3V Trim
(R)
(R)
INNOVATION and EXCELLENCE
ISO 9001 REGISTERED
DS-0481B
4/02
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356 Internet: www.datel.com Email: sales@datel.com
DATEL (UK) LTD. Tadley, England Tel: (01256)-880444 DATEL S.A.R.L. Montigny Le Bretonneux, France Tel: 01-34-60-01-01 DATEL GmbH Munchen, Germany Tel: 89-544334-0 DATEL KK Tokyo, Japan Tel: 3-3779-1031, Osaka Tel: 6-6354-2025
DATEL makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. The DATEL logo is a registered DATEL, Inc. trademark.
12

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