NON-ISOLATED DC/DC CONVERTERS 10.8 Vdc - 13.2 Vdc Input, 1.23, 2.5, 3.3, -12 Vdc/6, 1.5, 1.5, 2 A Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Sep. 22, 2009 SRXA-40AQ1L RoHS Compliant Rev.C Features • Non-Isolated • Low Cost • High Efficiency • Under Voltage Lockout • Fixed Frequency • OCP/SCP • High Power Density • Remote On/Off • Wide Input • Wide Operating Temperature Range • Class 1, Category 2, Non-Isolated DC/DC Converter (refer to IPC-9592) Applications • Networking • Computers and peripherals • Telecommunications Description The Bel SRXA-40AQ1L is part of the non-isolated dc/dc converter Power Module series. The modules use a SMT package. These converters provide 4 outputs: 1.23 Vdc/6 A, 2.5 Vdc/1.5 A, 3.3 Vdc/1.5 A and -12 Vdc/2 A over a wide range of input voltage (Vin = 10.8 - 13.2 Vdc).The efficiency is typically 91% @ 12Vin at full load. Part Selection Output Voltage Input Voltage 1.23/ 2.5/ 3.3/ -12 Vdc 10.8 Vdc - 13.2 Vdc Max. Output Current 6/ 1.5/ 1.5/ 2 A Max. Output Power 40 W Typical Efficiency 91% Model Number Active Low SRXA-40AQ1L Notes: Add “G” suffix at the end of the model number to indicate Tray Packaging. Part Number Explanation S R XA – 40 A Q1 L 1 2 3 4 5 6 7 1---Surface mount 2---RoHS 6, change “R” to “7” means RoHS 5 3---Series name 4---Series code 5--- Narrow input range (10.8-13.2V) 6---Output voltage, Quad 7---Enable, active low Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com 1 NON-ISOLATED DC/DC CONVERTERS 10.8 Vdc - 13.2 Vdc Input, 1.23, 2.5, 3.3, -12 Vdc/6, 1.5, 1.5, 2 A Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Sep. 22, 2009 Absolute Maximum Ratings Parameter Continuous non-operating Input Voltage Min Typ Max Unit -0.3 - 15 V Remote On/Off -0.3 - 15 V Ambient Temperature -40 - 85 °C Storage Temperature -55 - 125 °C Notes Note: Ratings used beyond the maximum ratings may cause a reliability degradation of the converter or may permanently damage the device. Input Specifications Parameter Operating Input Voltage Min 10.8 Typ 12 Max 13.2 Unit V Input Current (full load) - - 5 A Input Current (no load) - 80 150 mA Remote Off Input Current - 10 - mA Input Reflected Ripple Current (rms) - 10 20 mA Input Reflected Ripple Current (pk-pk) - 50 80 mA I t Inrush Current Transient - - 1 As Turn-on Voltage Threshold - 10.5 - V Turn-off Voltage Threshold - 9.5 - V 2 Notes Use a 1000uF AL-Cap on the input 2 CAUTION: This converter is not internally fused. An input line fuse must be used in application. Recommend a fast-acting fuse with maximum rating of 8A on system board. Refer to the fuse manufacture’s datasheet for further information. Note: All specifications are typical at 25 °C unless otherwise stated. Output Specifications Min Typ Max Unit Output Voltage Set Point Parameter -2 - 2 % Vo,set Load Regulation - - 1 % Vo,set Line Regulation - - 1 % Vo,set Regulation Over Temperature (-40deg.C-85deg.C) - - 1 % Vo,set - 30 30 30 40 - mV mV mV mV - 5 5 5 8 - mV mV mV mV Ripple and Noise (pk-pk) Vo=1.23V Vo=2.5V Vo=3.3V Vo=-12V Ripple and Noise (rms) Vo=1.23V Vo=2.5V Vo=3.3V Vo=-12V Notes Vin=12V, lout=half load 0-20MHz BW, minimum extra output ceramic caps on output Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com 2 NON-ISOLATED DC/DC CONVERTERS 10.8 Vdc - 13.2 Vdc Input, 1.23, 2.5, 3.3, -12 Vdc/6, 1.5, 1.5, 2 A Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Sep. 22, 2009 Output Specifications (continued) Parameter Output Current Range Min Typ Max Unit Vo=1.23V Vo=2.5V Vo=3.3V Vo=-12V 0 0 0 0 - 6 1.5 1.5 2 A A A A Output DC Current Limit 1 - 150 - %Iout Short Circuit Surge Transient - 1 3 As Turn on Time - 8 12 mS Overshoot at Turn on - - 5 % 330 220 80 22 - 560 470 220 100 uF uF uF uF 50 100 mV Notes 2 Output Capacitance Vo=1.23V Vo=2.5V Vo=3.3V Vo=-12V Transient Response △V Overshoot 50%~75% of Max Load Settling Time △V Overshoot 75%~50% of Max Load Settling Time △V Overshoot 50%~75% of Max Load Settling Time △V Overshoot 75%~50% Settling Time of Max Load △V Overshoot 50%~75% of Max Load Settling Time △V Overshoot 75%~50% of Max Load Settling Time △V Overshoot 50%~75% of Max Load Settling Time △V Overshoot 75%~50% of Max Load Settling Time Vo= 1.23V Vo= 2.5V Vo= 3.3V Vo= -12V - - 150 uS - 50 100 mV - - 150 uS - 50 100 mV - - 150 uS - 50 100 mV - - 150 uS - 50 100 mV - - 150 uS - 50 100 mV - - 150 uS - 200 400 mV - - 150 uS - 200 400 mV - - 150 uS di/dt=0.5A/us, Vin=12.0Vdc, Ta=25°C,minimum extra output ceramic caps on output Notes: 1. All outputs is shutdown latched when 3.3V, 2.5V, 1.23V output happen overload. Hiccup mode is active during -12V output overload but 3.3V, 2.5V and 1.23V don’t be affected operating. 2. All specifications are typical at nominal input, full load at 25°C unless otherwise stated. Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com 3 NON-ISOLATED DC/DC CONVERTERS 10.8 Vdc - 13.2 Vdc Input, 1.23, 2.5, 3.3, -12 Vdc/6, 1.5, 1.5, 2 A Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Sep. 22, 2009 General Specifications Parameter Min Typ Max Unit Efficiency - 91 - % Switching Frequency - 300 - kHz Weight - 14 - g FIT TBD - 1.77 x 0.90 x 0.49 45.00 x 22.86 x 12.39 - Notes Vin=12.0V, full load Calculated Per Bell Core SR-332 (Io=80%load, Ta = 25 °C, 9 FIT=10 /MTBF) Dimensions Inches (L × W × H) Millimeters (L × W × H) Note: All specifications are typical at 25 °C unless otherwise stated. Efficiency Data SRXA-40AQ1L 90.0% efficiency 85.0% 10.8V 12V 13.2V 80.0% 75.0% 70.0% 10% load 25% load 50% load 75% load full load output current Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com 4 NON-ISOLATED DC/DC CONVERTERS 10.8 Vdc - 13.2 Vdc Input, 1.23, 2.5, 3.3, -12 Vdc/6, 1.5, 1.5, 2 A Sep. 22, 2009 Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Thermal Derating Curves The thermal reference point is shown above. For reliable operation this temperature should not exceed 110°C. The output power of the module should not exceed the rated power for the module. Derating curve under normal input Maximum junction temperature of semiconductors derated to 120 degree C. Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com 5 NON-ISOLATED DC/DC CONVERTERS 10.8 Vdc - 13.2 Vdc Input, 1.23, 2.5, 3.3, -12 Vdc/6, 1.5, 1.5, 2 A Sep. 22, 2009 Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Ripple and Noise Waveform Transient Response Waveforms 3.3Vout 50%-75%load 0.5A/us 3.3Vout 75%-50%load 0.5A/us Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com 6 NON-ISOLATED DC/DC CONVERTERS 10.8 Vdc - 13.2 Vdc Input, 1.23, 2.5, 3.3, -12 Vdc/6, 1.5, 1.5, 2 A Sep. 22, 2009 Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Transient Response Waveforms (continued) 2.5Vout 50%-75%load 0.5A/us 1.23Vout 50%-75%load 0.5A/us -12Vout 50%-75%load 0.5A/us 2.5Vout 75%-50%load 0.5A/us 1.23Vout 75%-50%load 0.5A/us -12Vout 75%-50%load 0.5A/us Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com 7 NON-ISOLATED DC/DC CONVERTERS 10.8 Vdc - 13.2 Vdc Input, 1.23, 2.5, 3.3, -12 Vdc/6, 1.5, 1.5, 2 A Sep. 22, 2009 Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Startup & Shutdown Rise time Test Condition: Vin=12V, full load output Startup time Startup from on/off Ch1,Ch2,Ch4: 1.23Vout,2.5Vout,3.3Vout CH3: on/off contreller Vin=12V, full load output Startup from on/off Ch4: -12Vout Ch3: on/off contreller Vin=12V, full load output Shutdown Test Condition: Vin=12V, full load output Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com 8 NON-ISOLATED DC/DC CONVERTERS 10.8 Vdc - 13.2 Vdc Input, 1.23, 2.5, 3.3, -12 Vdc/6, 1.5, 1.5, 2 A Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Sep. 22, 2009 Remote On/Off Parameter Signal Low (Unit On) Signal High (Unit Off) Active Low Min -0.3 Typ - Max 1 Unit V 2.5 - Vin V 0 - 1 mA Current Sink Notes The remote on/off pin open, Unit off. Recommended remote on/off circuit for active low Vin+ Vin+ On/off On/off Vin- Vin- Control with open collector/drain circuit Control with photocoupler circuit Vin+ Vin+ On/off On/off Vin- Vin- Vcc Control with logic circuit Permanently on Input Under-voltage Lockout Input Current Under-voltage Lockout Voltage Falling V1=9.5V V2=10.5V Voltage Rising V1 V2 Input Voltage (V) Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com 9 NON-ISOLATED DC/DC CONVERTERS 10.8 Vdc - 13.2 Vdc Input, 1.23, 2.5, 3.3, -12 Vdc/6, 1.5, 1.5, 2 A Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Sep. 22, 2009 Power Sequence Vin>=10.8V 3.3Vout T3F T2F T1F T3S T2S T1S T4F low 1.2Vout T4S 0 high 2.5Vout -12Vout On/off Signal T0 T1F-T0<12mS T4F-T0<5mS T1S-T3S<10mS Max(T3F,T2F,T1F)-T3S<10mS Max[(T3F-T3S),(T2F-T2S),(T1F-T1S)]<5mS Min[3.3V/(T3F-T3S),2.5V/(T2F-T2S),1.2V/(T1F-T1S),]<100mV/us 3.3Vout(t)>2.5Vout(t)>1.2Vout(t),when t>T3S Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com 10 NON-ISOLATED DC/DC CONVERTERS 10.8 Vdc - 13.2 Vdc Input, 1.23, 2.5, 3.3, -12 Vdc/6, 1.5, 1.5, 2 A Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Sep. 22, 2009 Fundamental Circuit Diagram 3.3Vout Vin+ 2.5Vout On/off Controller 1.2Vout 3 -12Vout Controller GND GND Choke Capacitor Resistor Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com 11 NON-ISOLATED DC/DC CONVERTERS 10.8 Vdc - 13.2 Vdc Input, 1.23, 2.5, 3.3, -12 Vdc/6, 1.5, 1.5, 2 A Sep. 22, 2009 Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Layout Layout of components on top side Layout of components on bottom side Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com 12 NON-ISOLATED DC/DC CONVERTERS 10.8 Vdc - 13.2 Vdc Input, 1.23, 2.5, 3.3, -12 Vdc/6, 1.5, 1.5, 2 A Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Sep. 22, 2009 Mechanical Outline Pin Function Pin Function 1 Vin 6 GND 2 ON/OFF 7 1.23Vout 3 GND 8 2.5Vout 4 -12Vout 9 3.3Vout 5 GND Note: This module is recommended and compatible with Pb-Free Reflow Soldering and must be soldered using a reflow profile with a peak temperature of no more than 260 ºC for less than 5 seconds. Note: 1) All Pins: Material - Copper Alloy; Finish – 3 micro inches minimum Gold over 50 micro inches minimum Nickel plate. 2) Undimensioned components are shown for visual reference only. 3) All dimensions in inches (mm); Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm). Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com 13 NON-ISOLATED DC/DC CONVERTERS 10.8 Vdc - 13.2 Vdc Input, 1.23, 2.5, 3.3, -12 Vdc/6, 1.5, 1.5, 2 A Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Sep. 22, 2009 Revision History Date Revision Changes Detail Approval 2009-04-16 A First release HL Lu 2009-07-20 B 1. Input specs: Update no load current and remote off current, ripple current (pk-pk), turn on/off voltage; 2. Output specs: Update load/line regulation, ripple and noise, transient response, turn on time, output cap, weight, add note for OCP; 3. Add efficiency curve, thermal derating, NR, TR, startup & shutdown; 4. Update remote on/off, UVLO, SEQ, MD HL Lu 2009-09-22 C 1. Modify output voltage HL Lu 2. Update efficiency data and MD 3. Add SCH and Layout RoHS Compliance Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products. ©2009 Bel Fuse Inc. Specifications subject to change without notice. 092209 14 CORPORATE FAR EAST EUROPE Bel Fuse Inc. 206 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com Bel Fuse Ltd. 8F/ 8 Luk Hop Street San Po Kong Kowloon, Hong Kong Tel 852-2328-5515 Fax 852-2352-3706 www.belfuse.com Bel Fuse Europe Ltd. Preston Technology Management Centre Marsh Lane, Suite G7, Preston Lancashire, PR1 8UD, U.K. Tel 44-1772-556601 Fax 44-1772-888366 www.belfuse.com