ISOLATED DC/DC CONVERTERS 38 Vdc - 55 Vdc Input, 12 Vdc/40 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Aug. 19, 2011 0RQB-Q8S12x RoHS Compliant PRELIMINARY Rev.B Features Isolated Input Under-voltage Protection High Efficiency Output Over-voltage Protection Fixed Frequency (300 KHz) OCP/SCP High Power Density Over Temperature Protection Low Cost Remote ON/OFF Class 2, Category 2, Isolated DC/DC Converter (refer to IPC-9592) Applications Networking Computers and peripherals Telecommunications Description The 0RQB-Q8S12x is an isolated dc/dc converter that operates from a nominal 50 Vdc source. This converter is intended to provide isolation and step down to generate a regulated intermediate bus for the purpose of powering non-isolated Point-of-Load (POL) converters. This unit will provide up to 480 W of output power from a nominal 50 Vdc input. Part Selection Output Voltage Input Voltage 12 Vdc 38 Vdc - 55 Vdc Max. Output Current 40 A Max. Output Power 480 W Typical Efficiency 96.7% Model Number Active Low 0RQB-Q8S12L Model Number Active High 0RQB-Q8S120 Notes: Add “G” suffix at the end of the model number to indicate Tray Packaging. Part Number Explanation 0 R QB – Q8 S 12 x 1 2 3 4 5 6 7 1---Through hole mount 2---RoHS 6, change “R” to “7” means RoHS 5 3---Series name 4---Series code 5---Input range (38-55V) 6---Output voltage (12V) 7---Option, “x” of the model part number to be 0-9, A-Z, which will represent the special request of customer. Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com 1 ISOLATED DC/DC CONVERTERS 38 Vdc - 55 Vdc Input, 12 Vdc/40 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Aug. 19, 2011 Absolute Maximum Ratings Parameter Continuous non-operating Input Voltage Min Typ Max Unit -0.3 - 60 V Remote On/Off -0.3 - 10 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 38 Typ 50 Max 55 Unit V Input Current (full load) - - 12.5 A Input Current (no load) - 140 200 mA Remote Off Input Current - 4 8 mA Input Reflected Ripple Current (rms) - 450 600 mA Input Reflected Ripple Current (pk-pk) - 1.6 2.4 A I t Inrush Current Transient - - 1 As Turn-on Voltage Threshold 34 35.5 37 V Turn-off Voltage Threshold 32 33.5 35 V 2 Notes 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 20A 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 Parameter Output Voltage Set Point Vin＞49V Vin≤49V Load Regulation Vin=38-49V Vin=49-55V Line Regulation Vin=38-49V Vin=49-55V Min - Typ Max Unit 12 - V V Vin 4 Notes Please see the figure about Vo set point below. - 0.4 30 0.7 50 V mV Io=0~100% load - 2.7 25 3.5 40 V mV Io=100% load Output Ripple and Noise (pk-pk) - 50 150 mV Output Ripple and Noise (rms) - 10 30 mV Vin=50V, Io=100%load, 0-20MHz BW, with a 1µF ceramic capacitor and a 10uF TAN cap at output. - - 200 mV 0 0 0 - 40 40 40 A A A Ripple and Noise (pk-pk) under worst case Output Current Range Vin=38V Vin=48V Vin=55V Over all operating input voltage, load and ambient temperature condition. Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com 2 ISOLATED DC/DC CONVERTERS 38 Vdc - 55 Vdc Input, 12 Vdc/40 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Aug. 19, 2011 Output Specifications (continued) Parameter Min Typ Max Unit 48 52 56 A Short Circuit Surge Transient - - 2 As Rise time - - 15 mS - 30 35 mS Enable from Vin - 30 35 mS Enable from ON/OFF Overshoot at Turn on - 0 3 % Output Capacitance 0 - 6000 uF - 250 350 mV - 100 200 uS - 250 350 mV - 100 200 uS Output DC Current Limit Turn on Time Transient Response △V Overshoot 50%~75% of Max Load Settling Time △V 75%~50% of Max Load Overshoot Vo= 12 V Settling Time Notes Vin=50V 2 di/dt=1A/us, Vin=50Vdc, Ta=25°C, with a 1µF ceramic capacitor and a 100uF AL. cap at output. Note: All specifications are typical at nominal input, full load at 25°C unless otherwise stated. Vo vs Vin 12.5 12 11.5 Vout(V) 11 0A 20A 40A 10.5 10 9.5 9 8.5 38 39 40 41 42 43 44 45 Vin(V) 46 47 48 49 50 52 55 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com 3 ISOLATED DC/DC CONVERTERS 38 Vdc - 55 Vdc Input, 12 Vdc/40 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Aug. 19, 2011 General Specifications Parameter Min Typ Max Unit Efficiency 94.7 96.7 - % Switching Frequency 280 300 320 kHz Over Temperature Protection - 125 - ℃ Over Voltage Protection - - 14 V Weight - 65 - g FIT 161 - Notes Vin=50V, full load Calculated Per Bell Core SR-332 (Vin=50 V, Vo=12 V, Io=32 A, Ta = 9 25C, FIT=10 /MTBF) Isolation characteristics Input to Output Isolation Resistance Isolation Capacitance - - 1500 V 10M - - Ohm - 2700 - pF Note: All specifications are typical at 25 C unless otherwise stated. Efficiency Data 0.98 EFFICIENCY 0.96 0.94 0.92 38V 0.9 0.88 48V 55 V 0.86 0.84 0.82 0.8 5A 10A 20A 30A 40A OUTPUT CURRENT(A) Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com 4 ISOLATED DC/DC CONVERTERS 38 Vdc - 55 Vdc Input, 12 Vdc/40 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Aug. 19, 2011 Remote On/Off Parameter Signal Low (Unit On) Signal High (Unit Off) Signal Low (Unit Off) Signal High (Unit On) Active Low Active High Current Sink Min -0.3 Typ - Max 0.8 Unit V 2.4 - 10 V -0.3 - 0.8 V 2.4 - 10 V 0 - 0.3 mA Notes 0RQB-Q8S12L The remote on/off pin open, Unit off. 0RQB-Q8S120 The remote on/off pin open, Unit on. 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 Recommended remote on/off circuit for active high 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 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com 5 ISOLATED DC/DC CONVERTERS 38 Vdc - 55 Vdc Input, 12 Vdc/40 A Output Aug. 19, 2011 Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Over Current Protection To provide protection in a fault output overload condition, the module is equipped with internal current-limiting circuitry and can endure current limiting for a few mili-seconds. If the over current condition persists beyond a few milliseconds, the module will shut down into hiccup mode and restart once every 400mS. The module operates normally when the output current goes into specified range. The typical average output current is 3.8A during hiccup. CH1: Output Voltage CH2: Output Current Waveform Test condition: Vin=50V CH1: Output Voltage CH2: Output Current Waveform Expansion of on time portion of above figure Ripple and Noise Waveform 50Vdc input, 12Vdc/40A output Note: Ripple and noise at full load, with a 1uF ceramic cap and a 10uF Tan cap at output, Ta=25 deg C. Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com 6 ISOLATED DC/DC CONVERTERS 38 Vdc - 55 Vdc Input, 12 Vdc/40 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Aug. 19, 2011 Input Under-voltage Lockout Input Current Under-voltage Lockout Voltage Falling V1=33.5V V2=35.5V Voltage Rising V1 V2 Input Voltage (V) Transient Response Waveforms Vin= 50V 50%-75% Load Transients Vin= 50V 75%-50% Load Transients Note: Transient Response at di/dt=1A/uS, with a 1µF ceramic capacitor and a 100uF AL. cap at output, Ta=25 deg C. Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com 7 ISOLATED DC/DC CONVERTERS 38 Vdc - 55 Vdc Input, 12 Vdc/40 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Aug. 19, 2011 Thermal Derating Curve Maximum junction temperature of semiconductors derated to 120 degree C. AIR FLOW Bottom view The OTP is achieved by temperature sensor U10 and it is in non-latch mode when the hottest component Q9 reaches 125C with 200LFM air flow correspondingly. It will restart automatically when the temperature falls down to 105C. The protecting point will be varied a little under different conditions (air flow, ambient temperature, input voltage, load...). Temperature reference points on top side Temperature reference points 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 8 ISOLATED DC/DC CONVERTERS 38 Vdc - 55 Vdc Input, 12 Vdc/40 A Output Aug. 19, 2011 Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Mechanical Outline Pin Function Dia. Length 1 Vin(+) 0.04’’ 0.145’’ 2 Remote 0.04’’ 0.145’’ 3 Vin(-) 0.04’’ 0.145’’ 4 Vout(-) 0.06’’ 0.145’’ 5 Vout(+) 0.06’’ 0.145’’ Note: This module is recommended and compatible with Pb-Free Wave Soldering and must be soldered using a peak solder 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 9 ISOLATED DC/DC CONVERTERS 38 Vdc - 55 Vdc Input, 12 Vdc/40 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Jul. 7, 2011 Revision History Date Revision Changes Detail Approval 2011-07-07 PA First release YF Sun 2011-08-19 PB Updated mechanical outline XJ Sun RoHS Compliance Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products. 2011 Bel Fuse Inc. Specifications subject to change without notice. 081911 10 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