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BTCPower
SQ100-48-5, SQ100-48-5N SQO100-48-5, SQO100-48-5N
TM
Broadband TelCom Power, Inc.
Redefining "Current" Limits In Power Conversion
Technical Specification
48Vin 5.0Vout 25A
Description
The SQ(Enclosure)/SQO(Open Frame) family of high power density, high efficiency DC/DC converters deliver up to 25A in an industry standard quarter brick footprint. They are targeted specifically at the telecommunication, industrial electronics, mobile telecommunication and distributed power markets. With a wide input voltage range of 36-75V they are available with output voltages of either 1.5, 1.8, 2.5, 3.3 or 5 Volts. All models feature an input filter, input undervoltage lockout, output overvoltage and overtemperature protection, output current limiting and short circuit protection. These converters are available either in a package that is fully enclosed with a six-sided metal shield or an alternative, open-frame construction. In both cases the aluminum heat spreader design achieves very efficient heat transfer with no hot spots. The use of patented Flat Transformer technology and other patented design concepts facilitate very low temperature rise. The use of highly derated power devices help to achieve high reliability, high performance and offer a low cost solution to systems des igners requiring maximum power in small footprints.
Features
*
Delivers up to 25A in a quarter brick * High power density up to 90W/inch3 * High efficiency Synchronous topology * Unique Flat Transformer Technology * No airflow or heat sink required * No minImum load required * Low profile of only 0.34 inch * 1.5V, 1.8V, 2.5V, 3.3V or 5V output models * Wide input operating range 36-75V * -40C to +100C ambient operation * Input undervoltage lockout * Output overvoltage protection * Output current limit and short circuit protection * Remote On/Off pin (Negative logic also available) * Output adjustment +/-10% range * Output remote sense feature * 1500V, 10M input-to-output isolation * Enclosed construction with heat spreader for low temperature rise * Also available in an open-frame construction * UL 60950 recognized, TUV EN60950 and CSA C22.2 No. 60950-00 Certified and CE marked * Meets conducted limits of FCC Class B and CEI IEC61204-3 Class B with external filter * MTBF of 750,000 hours @ 50C (MIL-HDBK-217F)
Applications
*
Telecommunications * Data Communications * Wireless Communications * Networking Gear * Servers, Switches and Data Storage * Semiconductor Test Equipment * Distributed Power Architecture
Broadband TelCom Power, Inc. 1719 S. Grand Avenue, Santa Ana, CA 92705 U.S.A.
Tel.: 714-259-4888 * Fax: 714-259-0840 * www.btcpower.com * Email: sales@btcpower.com * PS SQ100-48-5, SQO100-48-5 Rev1 4-2-03
Technical Specification
SQ100-48-5, SQ100-48-5N SQO100-48-5, SQO100-48-5N 48Vin 5.0Vout 25A
BTCPower
CONVERTER SELECTION
TM
Data Sheet
Typical @ Ta=+25C under nominal line voltage and full load conditions.
Input Voltage (Volts) Model SQ100-48-5 SQO100-48-5 Nominal 48 48 Range 36-75 36-75 Current (A) No load 0.050 0.050 Full load 2.9 2.9 Output Voltage (Volts) 5.0 5.0 Current (Amps) 25 25 Efficiency 75% Load (%) 90 90
For negative logic feature add designator N as suffix to model number, i.e., SQ100-48-5N or SQO100-48-5N Consult factory for other output voltage configurations.
Outline Information and Summary Specifications
Pin Connection Pin# 1 2 3 4 5 6 7 8 Function Vin + On/Off Vin Vout Sense Trim Sense + Vout +
All dimensions are in inches [mm] Pin 4 and 8 are dia. 0.062 [1.57] All other pins are all dia. 0.040 [1.02] Pin material: Brass Pin finish: Tin/Lead plated Heat spreader (baseplate) material: Aluminum Weight: 50.7g (1.8oz) Tolerance Inches Millimeters *XX 0.020 *X 0.5 *XXX 0.010 *XX 0.25 Pin: 0.002 0.05
Thermal derating for vertical orientation, Vin=54V Output Output Current at 40C (Amps) Voltage 200 LFM 300 LFM (Volts) NoHeatsink With No Heatsink With
Heatsink Heatsink
Output Current at 60C (Amps) 200 LFM 300 LFM
No Heatsink With Heatsink No Heatsink With Heatsink
5.0
25
25
25
25
23
25
25
25
The information and specifications contained in this specification are believed to be accurate and reliable at the time of publication. Specifications are subject to change without notice.
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Technical Specification
SQ100-48-5, SQ100-48-5N SQO100-48-5, SQO100-48-5N 48Vin 5.0Vout 25A
BTCPower
TM
Data Sheet
Electrical Specification
Typical test data at Ta=25C, Vin=48V unless otherwise noted.
PARAMETER
Absolute maximum rating Input voltage Operating case temperature Storage temperature Humidity Input characteristics Operating input voltage range Turn on voltage threshold Turn off voltage threshold Transient withstand Maximum input current Off converter input current Output characteristics Output voltage set point Output voltage line regulation Output voltage load regulation Output voltage trim range Output voltage ripple and noise Output over power protection Over-voltage protection Output current range Over-temperature protection Temperature coefficient Capacitive Load Output dynamic characteristics Startup time Transient recovery time Transient Peak Deviation Efficiency (see efficiency curve) 100% load efficiency Isolation characteristics Isolation voltage (primary to secondary) Isolation voltage (primary to case) Isolation voltage (secondary to case) Isolation resistance Isolation capacitance Feature Characteristics Switching frequency ON/OFF control (Positive logic) Converter On Converter Off ON/OFF control (Negative logic) Converter On Converter Off Calculated MTBF Weight
NOTES
MIN
0 -40 -55
TYP
MAX
80 100 125 95
UNIT
V C C % V V V V A mA V % % % mV(pk-pk) % V A C %/C F ms s %Vo % VDC VDC VDC M
36 34 33 Transient duration: 100ms 100% load, 36Vin 36Vin 4.90 36~75 Vin 10%-100%Load Percentage of normal output 20Mz bandwidth, 100% Load, 48Vin
48 35 34 2.5 2.2 5.00 1 1 100 120 5.9 110
75 36 35 100 3.3 3.5 5.10 1.1 1.1 +15 150 140 6.3 25 120 0.05 20,000 100 800 10
-20 110 5.7 0
0 5% to 95% of the output voltage 25% load change 25% load change 48 Vin 1minute 1minute 1minute 500VDC, Primary to secondary Primary to secondary 340 2.5 -1.0 -1.0 2.5 1,000,000 40 360 90 1500 1000 1000 10 60
1000 380 7 1.2 1.2 7
pF KHz V V V V Hrs g
SQ100-48-5.0
SQ100-48-5.0N Bellcore @50C
Broadband TelCom Power, Inc. 1719 S. Grand Avenue, Santa Ana, CA 92705 U.S.A.
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Technical Specification
SQ100-48-5, SQ100-48-5N SQO100-48-5, SQO100-48-5N 48Vin 5.0Vout 25A
BTCPower
TM
Data Sheet
Basic operation and functions
The SQ(SQO) family uses FTT technology to achieve high output current. The whole unit switches at the fixed frequency for a predictable EMI performance. Rectification of the transformer's output is done by synchronous rectifiers to make the unit work in a higher efficiency power performance. The SQ(SQO) Brick has many standard controls and protection functions. Input ( pin1, pin3 ) Input power Vin(+) must be connected to Positive input voltage pin1; Input power Vin(-) must be connected to Negative input voltage pin3. Output ( pin8, pin4 ) Output power Vout(+) must be connected to Positive output voltage pin8; Output power Vout() must be connected to Negative output voltage pin4. On/Off ( pin 2 ) Permits the user to maintain unit On/Off, in order to properly sequence different power supplies and reduce power consumption during the standby condition. There are two remote control options available, positive logic and negative logic is referenced to Vin (-), and typical connections are shown in Fig 1.
Pin 2 is the "Enable" pin, connecting a TTL compatible pin. A TTL control signal to this pin, according to the specification, will turn the unit on or off. The positive logic version turns on when pin 2 is at logic high, and turns off when pin 2 is at logic low. The unit is on when pin 2 is left open. The negative logic version turns on when pin 2 is at logic low and turns off when pin 2 is at logic high. The pin 2 can be directed to Vin(-), to enable automatic turn on to the unit without the need of an external control signal. Turn on timing vs. Input On/Off Pin is shown in Figure 12, and the Turn off timing vs. Input On/Off pin is shown in Figure 13. Remote Sense ( pin 5, pin 7 ) Permits the user to maintain the accurate output voltage at the remote load terminals regardless of the line drop. The Sense(-) (pin5) and Sense (+) (pin7) should be connected at the load or at the point where the regulation is needed. ( shown on Fig. 2)
Fig 2: Remote Sense Circuit
The remote sense feature of the unit compensates for voltage drop occurring between the output pins of the unit and load. The Sense(-) (pin5) and Sense(+)(pin7) should be connected at the load or at the point where regulation is required.
Fig. 1: Typical Circuit for On/Off Function
Broadband TelCom Power, Inc. 1719 S. Grand Avenue, Santa Ana, CA 92705 U.S.A.
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Technical Specification
SQ100-48-5, SQ100-48-5N SQO100-48-5, SQO100-48-5N 48Vin 5.0Vout 25A
BTCPower
TM
Data Sheet
If remote Sense is not required, the Sense(-) pin must be connected to the Vout(-) pin (pin4), and the Sense(+) pin must be connected to the Vout(+) pin(pin 8) to ensure the unit will regulate at the specified output voltage. If these connections are not made, the unit's output voltage will be higher than the specified value. The unit output over voltage protection senses the voltage across Vout(+) and Vout(-), and not across the sense lines, so the resistance between the output pins of the unit and the load should be minimized to prevent unwanted triggering of the OVP. When using the remote sense feature, the output voltage at the unit can be increased by as much as 10% above the normal rating, in order to maintain the required voltage across the load. Therefore, the designer must consider this condition. Also when using the remote sense function, the output power must be taken care of, as not to exceed the maximum power capability of the unit. Output voltage trim (pin 6) Permits the user to adjust the output voltage up or down to achieve the custom voltage or to make the output voltage margining. The adjustment range is from + 10% to -20%. Output voltage can be adjusted up or down, by connecting the Rtrim-up or Rtrim-down resistor as shown. Rtrim-up makes the output voltage go up to 10%; and the Rtrim-down makes the output voltage go down to 20%. (see Fig.5 & Fig. 6) Leave Trim pin ( Pin 6) open for normal output voltage. When trimming up, care must be taken, not to exceed the unit OVP threshold. A typical circuit is shown in Fig. 3.
Also, care must be taken not to exceed the unit's maximum allowable output power.
Fig 3. Trim Up Output Voltage Circuit
For Trim up resistor value, we list the reference "Trim Up Resistance" for increasing the output voltage for every 1 percent (see Trim Table 1). Fig 5. shows "Trim Up Resistance" value chart.
Trimming down the output voltage for a typical circuit, as shown on Fig. 4.
Fig 4. Trim Down Output Voltage Circuit
For Trim down resistance value, we list the reference "Trim Down Resistance" for decreasing output voltage for every 1 percent (see Trim Table 2.). Fig 6 shows "Trim Down Resistance" value chart.
Broadband TelCom Power, Inc. 1719 S. Grand Avenue, Santa Ana, CA 92705 U.S.A.
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Technical Specification
SQ100-48-5, SQ100-48-5N SQO100-48-5, SQO100-48-5N 48Vin 5.0Vout 25A
BTCPower
TM
Data Sheet
800 700 600 Rtrim-up (K) 500 400 300 200 100 2 3 4 5 6 7 8 9 10 Trim up Vout change %
Rtrim-up(K) 715 499 392 316 267 232 210 187 169
Vout(v) 5.1 5.15 5.2 5.25 5.3 5.35 5.4 5.45 5.5
Trim up Vout % 2 3 4 5 6 7 8 9 10
Table 1: Rtrim-up resistor values.
Fig 5. Trim Up Resistance for reference chart
300
250
200 Rtrim-dn (K)
150
100
50
Rtrim-dn(K) 261 165 118 93.1 76.8 64.9 54.9 48.7 43.2
Vout(v) 4.9 4.85 4.8 4.75 4.7 4.65 4.6 4.55 4.5
Trim down Vout % 2 3 4 5 6 7 8 9 10
0 2 3 4 5 6 7 8 9 10
Table 2: Rtrim-down resistor values.
Trim down change %
Fig 6 Trim Down Resistance for reference chart
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Technical Specification
SQ100-48-5, SQ100-48-5N SQO100-48-5, SQO100-48-5N 48Vin 5.0Vout 25A
BTCPower
TM
Data Sheet
Protection Features
Input Under-voltage Lockout ( IUV ) Input under voltage lockout ( IUV ) is standard with the SQ(SQO) unit. The unit will shut down when the input voltage drops below a threshold, and the unit will turn on when the input voltage goes to the upper threshold. The hysteretic voltage of the under voltage protection is 2 V, normally from the 33.5V to 35.5V range. Output Over-current Protection ( OCP ) The unit will shut down when the over current or short circuit condition exists. Once the OCP happens, the unit has shut down. The attempted restart will continue indefinitely until the over current or short circuit condition is removed. When OCP happens, the output voltage drops below 1.1V. Figure 19 shows output voltage vs. output current limit point and the unit's shutdown point. Input voltage has almost no effect on the current limit point. Output Over-voltage Protection ( OVP ) The unit will shut down when the output voltage exceeds the over voltage threshold. If the output voltage across Vout(+) (pin8) and Vout(-) (pin4) exceeds the threshold of the OVP circuitry, the unit has shut down which is caused by an OVP circuit, and the unit will never restart, and the output voltage is below 0.5V. Over Temperature Protection ( OTP ) The unit will shut down when the base plate temperature exceeds the protection threshold. The unit will shut down under the base plate temperature over a 110C condition to protect the unit from overheating. The OTP circuit will turn the unit off when OTP happens. Once the unit has shut down, it will restart at the cycle when the base plate temperature goes down.
Broadband TelCom Power, Inc. 1719 S. Grand Avenue, Santa Ana, CA 92705 U.S.A.
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Technical Specification
SQ100-48-5, SQ100-48-5N SQO100-48-5, SQO100-48-5N 48Vin 5.0Vout 25A
BTCPower
TM
Data Sheet
Application and consideration
Input Source Impedance The unit has been designed to be stable with no external capacitors when used in a low inductance input and output circuit. However in many applications, the inductance with the distribution from the power source to the input of the unit can affect the stability of the unit. The addition of 47uF electrolytic capacitor with an Esr < 1 (at 100khz) across the input can ensure the stability of the unit. Also in many applications, the user has to use decoupling capacitors at the output load, to ensure the hold up time for the load. Safety Requirements and Considerations The unit meets the American and International safety regulatory requirement UL60950, TUV EN 60950, CSA C22.2 No. 60950-00. Basic insulation is also provided between the input side and the output side. To meet safety agencies requirements, an input line fuse must be used external to the unit. An 8A fuse or less with a normal blow rate must be used to meet the safety agencies requirements If the input source is non-SELV ( ELV or a hazardous voltage greater than 60 Vdc and less than or equal to 75 Vdc), for the unit output to be considered meeting the requirements of safety extra low voltage (SELV), all of the following must be met: * * The input source is to be provided with reinforced insulation from any hazardous voltage, including the ac main. The input pins of the unit are not operator accessible.
Fig 7. External filter circuit for EMC.
*
*
For whole system, for safety agencies requirements, and for the combination of the unit's input side (primary side) and the unit's output side (secondary side), verify that under a single fault, hazardous voltages do not appear at the unit's output side (secondary side). Never ground either of the input pins of the unit without grounding one of the output pins. This may allow a non-SELV voltage to appear between the output pin and ground.
Electromagnetic Compatibility ( EMC ) EMC requirements must be met at the end product and system level from the customer. As there is no specific standards dedicated to the EMC of board-mounted DC/DC converter, which exist. However the SQ(SQO) Family unit has been tested for EMC requirement levels. With the addition of a simple external filter (see Fig 7.), the SQ(SQO) Family unit passes the FCC class B test conducted and CEI IEC61204-3 Class B.
Broadband TelCom Power, Inc. 1719 S. Grand Avenue, Santa Ana, CA 92705 U.S.A.
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Technical Specification
SQ100-48-5, SQ100-48-5N SQO100-48-5, SQO100-48-5N 48Vin 5.0Vout 25A
BTCPower
TM
Data Sheet
With this addition of an external simple filter circuit, we can easily meet the EMC agencies requirements. The EMC test result is shown on Fig 8 below.
Input Transient Withstand SQ(SQO) unit can withstand input transient voltage with 100v/100ms pulse, and never be damaged.
Fig 8. EMC conducted test result
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Technical Specification
SQ100-48-5, SQ100-48-5N SQO100-48-5, SQO100-48-5N 48Vin 5.0Vout 25A
BTCPower
TM
Data Sheet
Characterization
General information
The SQ(SQO) unit has many operational characterized aspects, including thermal derating, efficiency, start up and down timing parameter, overshoot, output ripple & noise, dynamic response to load, and over current protection curves. The following pages contain specific plots or waveforms associated with the unit. Additional comments for specific data are provided below. Figure 23 shows that maximum output power derating vs. ambient air temperature with airflow rates of 0LFM through 300 LFM. At Vin=48v. Figure 24 shows output power derating vs. ambient aur temperature with airflow rates of 0LFM through 300LFM. At Vin=48v. ( Open frame, without heatsink )
Efficiency
Efficiency vs. load current curve is given below. The ambient temperature is 25C, airflow is 200LFM(1m/s), and the input voltage is 36V, 48V, and 75V conditions. Figure 14 shows that Efficiency at nominal output voltage vs. output current for various Input voltage.
Test Conditions
All data presented herein were taken with the unit soldered to a test board, which is a 0.060" thick printed circuit board. All measurements require an airflow wind with airflow meter measuring the airflow LFM value. For the input line, a 47uF/100V electrolytic capacitor with Esr < 1 is used in the test. It is better to make the 47uF capacitor closed to the unit. For the output, a 10uf tantalum capacitor with Esr < 0.12 and 1uF ceramic capacitor has been used for the test. Also it is better when these two capacitors are close to the unit.
Note: It is important to make sure that the components on the unit do not exceed their rating.
Start up
During the turn on transient using the On/Off pin for full rated current and No load conditions, the output voltage waveforms are given in the below. Fig 9, Fig 10 and Fig 11 show that all different kind of start up waveform.
Ripple and Noise
The output voltage waveform measured at No load and Full load current, with 10uf tantalum and 1uf ceramic capacitor across to close the unit. Figure 21 and Figure 22 show that output voltage Ripple & Noise at Vin=48v and different load condition.
Thermal Derating
For thermal derating, output current vs. ambient temperature and airflow rates are tested, and the test graphic is shown in Fig 23. Ambient temperature was varied between 25C and 85C, with airflow rates from 0 LFM to 300LFM (0 to 1.5 m/s).
Broadband TelCom Power, Inc. 1719 S. Grand Avenue, Santa Ana, CA 92705 U.S.A.
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Technical Specification
SQ100-48-5, SQ100-48-5N SQO100-48-5, SQO100-48-5N 48Vin 5.0Vout 25A
BTCPower
TM
Data Sheet
Start up information
Scenario #1: Initial Start up from power supply
On/Off function enabled, the unit starts via input voltage Vin See Fig 9. Time t0 t1 t2 t3 Comments On/Off pin is On: system front-end power is switched on, Vin to unit begins to rise. Vin crosses Under voltage lockout protection circuit threshold: the unit enabled to be on The unit begins to turn on ( unit turn-on delay). Unit output voltage reaches 100% of normal voltage.
For this example, the unit total start up time (t3- t1) is typically 45ms.
Scenario #2: Initial Start up using On/Off Pin
With Vin previously powered, the unit starts via On/Off pin. See Fig 10. Time t0 t1 t2 t3 Comments Vin at nominal value. Arbitrary time when On/Off pin is enabled (Unit enabled) End of unit turn-on delay Unit Vout reaches 100% of nominal voltage.
Fig 9. Start up waveform
For this example, the unit total start up time (t3- t1) is typically 70ms. Scenario #3: Turn-off and restart using On/Off Pin With Vin previously powered, the unit is disabled and then enabled via On/Off pin. See Fig 11. Time t0 t1 Comments Vin and Vout are at nominal values, On/Off pin On. On/Off pin arbitrarily disabled, the unit output falls to zero. Turn-on inhibit delay period (100ms) is initiated, and On/Off pin action is internally inhibited. On/Off pin is externally re-enabled. If (t2- t1) 100ms, external action of On/Off pin Is locked out by start up inhibit timer. If (t2- t1) > 100ms, On/Off pin is On, the unit begins turn-on; if off, the unit awaits On/Off pin On signal; see Fig 11. Unit Vout reaches 100% of nominal voltage.
Fig 10. Start up using On/Off pin
t2
t3
For the condition, (t2- t1) 100ms, the unit total start up time (t5- t2) is typically 200ms. For (t2- t1) > 100ms , start up should be typically 45ms after release of On/Off pin.
Fig 11. Turn off and restart using On/Off pin
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Technical Specification
SQ100-48-5, SQ100-48-5N SQO100-48-5, SQO100-48-5N
On/Off Control Power Up/Down
BTCPower
48Vin 5.0Vout 25A
TM
Data Sheet
Figure 12. Turn on timing vs. Input On/Off Pin. Waveform 2 is output voltage, waveform 4 is negative On/Off logic signal. At 48v input voltage, 20A output current with 100uf output capacitance load.
Figure 13. Turn off timing vs. Input On/Off Pin. Waveform 2 is output voltage, waveform 4 is negative On/Off logic signal. At 48v input voltage, 20A output current with 100uf output capacitance load.
Efficiency
100% 95% 90% 85%
Eff. (%)
80% 36V 75% 70% 65% 60% 2.5 5 7.5 10 12.5 15 17.5 20 22.5 25 50V 75V
Load (A)
Figure 14. Efficiency at nominal output voltage vs. output current for various Input voltage. The unit mounted on the 0.06" thick PCB with 300LFM air flow (1.5/m) from pin 3 to pin 4 and Ta=25C
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Technical Specification
SQ100-48-5, SQ100-48-5N SQO100-48-5, SQO100-48-5N
Dynamic Response
BTCPower
48Vin 5.0Vout 25A
TM
Data Sheet
Figure 15. Output voltage dynamic response at Vin=48v Iout= 12~20A, 2.5A/us dynamic load. waveform 2 is dynamic response via dynamic load. waveform 4 is load current (2.5A/us); with 10uF output capacitance load.
Figure 16. Output voltage dynamic response at Vin=48v Iout= 12~20A, 2.5A/us dynamic load. waveform 2 is dynamic response via dynamic load. waveform 4 is load current (2.5A/us); with 2200uF output capacitance load.
Overshoot
Figure 17. Output voltage over shoot and rise time at Vin=48v, Iout = 0A; with 100uF output capacitance load, and On/Off pin enabled to turn on the unit.
Figure 18. Output voltage over shoot and rise time at Vin=48v, Iout=20A; with 100uF output capacitance load, and On/Off enabled to turn on the unit.
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Technical Specification
SQ100-48-5, SQ100-48-5N SQO100-48-5, SQO100-48-5N Over Current and Short Circuit 48Vin 5.0Vout 25A
BTCPower
TM
Data Sheet
7 6 output volt. (V) 5 4 3 2 1 0 0 5 10 15 20 25 30 35 40 output current (A)
Figure 19. Output voltage vs. output current limit point and the unit shutdown point. Input voltage has almost no effect on current limit point.
Figure 20. Output waveform under short circuit protection condition. Under 10m short circuit during restart at 48Vin.
Ripple and Noise
Figure 21. Output voltage Ripple & Noise at Vin=48v, Iout=0A, with 10uF tantalum cap. and 1uf ceramic cap. output capacitance load.
Figure 22. Output voltage Ripple & Noise, at Vin=48v, Iout=20A, with 10uF tantalum cap. and 1uf ceramic cap. output capacitance load.
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Technical Specification
SQ100-48-5, SQ100-48-5N SQO100-48-5, SQO100-48-5N Temperature derating
25 Tc=100X C 1.5M/S 1.0M/S 0.5M/S Free Air 25
BTCPower
48Vin 5.0Vout 25A
TM
Data Sheet
20 Iout (A) 15
20 Iout (A) 15
Tc=100X C 1.5M/S 1.0M/S 0.5M/S Free Air
10
10
5
5
0
0 0 25 50 Ta(X ) C 75 100
0
25
50 Ta(X ) C
75
100
Figure 23. Maximum output power derating vs. ambient air temperature with airflow rates of 0LFM through 300 LFM. At Vin=48v. ( without heatsink )
Figure 24. Maximum output power derating vs. ambient air temperature with airflow rates of 0LFM through 300 LFM. At Vin=48v. (Open Frame, without heatsink )
Broadband TelCom Power, Inc. 1719 S. Grand Avenue, Santa Ana, CA 92705 U.S.A.
P 15 of 16
Tel.: 714-259-4888 * Fax: 714-259-0840 * www.btcpower.com * Email: sales@btcpower.com * PS SQ100-48-5, SQO100-48-5 Rev1 4-2-03
Technical Specification
SQ100-48-5, SQ100-48-5N SQO100-48-5, SQO100-48-5N Input reflected ripple current 48Vin 5.0Vout 25A
BTCPower
TM
Data Sheet
Figure 25. Test set up for measuring Input reflected ripple currents,
ic and is.
Figure 26. Input reflected ripple current
ic waveform
without input inductor. At Vin=48v, Iout=25A, 50ma/Div. ( current probe with 50mv/div )
Figure 27. Input reflected ripple current waveform With 10uH input inductor. At Vin=48v, Iout=25A, 50ma/Div ( current probe with 50mv/div)
is
For More Information, Please Contact
sales@btcpower.com
support@btcpower.com
www.btcpower.com
Broadband TelCom Power, Inc. 1719 S. Grand Avenue, Santa Ana, CA 92705 U.S.A.
P 16 of 16
Tel.: 714-259-4888 * Fax: 714-259-0840 * www.btcpower.com * Email: sales@btcpower.com * PS SQ100-48-5, SQO100-48-5 Rev1 4-2-03

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