ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input 12 Vdc /25 A Output, 1/4 Brick Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. March 27, 2009 0RQB-T0T12x RoHS Compliant Rev.C Features Isolated Output Over-Voltage Shutdown High Efficiency Output Voltage Trim High Power Density OCP/SCP Fixed Frequency (250 kHz) Over Temperature Protection Low Cost Remote On/Off Input Under-Voltage Lockout Positive/Negative Remote Sense Basic Insulation Class 1, Category 2, Isolated DC/DC Converter (refer to IPC-9592) TUV EN60950-1 Recognized (Pending) UL60950-1 Recognized (UL/cUL) (Pending) Applications Networking Computers and peripherals Telecommunications Description The 0RQB-T0T12X is an isolated dc/dc converter that operates from a nominal 48 Vdc source. This unit will provide up to 300 W of output power from a nominal 48 Vdc input. This unit is designed to be highly efficient and low cost. Features include remote on/off, over current protection and under voltage lockout. The converter is provided in an industry standard quarter brick package. Part Selection Output Voltage 12 Vdc Input Voltage 36 Vdc - 75 Vdc Max. Output Current 25 A Max. Output Power 300 W Typical Efficiency 95.5% Model Number Active High 0RQB-T0T120 Model Number Active Low 0RQB-T0T12L Notes: Add “G” suffix at the end of the model number to indicate Tray Packaging. Part Number Explanation 0 R QB – T0 T 12 0 1 2 3 4 5 6 7 1---Through hole 2---RoHS 6, change “R” to “7” means RoHS 5 3---Series name, 1/4 Brick 4---Series code 5---Input range 48V wide (36-75V) 6---Output voltage 12V 7---Remote sense, active high, change “0” to “L” means 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 ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input 12 Vdc /25 A Output, 1/4 Brick Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. March 27, 2009 Absolute Maximum Ratings Parameter Continuous Input Voltage Input Transient Voltage Remote On/Off I/O Isolation Voltage Min Typ Max Unit -0.3 - 80 V - - 100 V -0.3 - 18 V - - 1500 V Ambient Temperature -40 - 85 C Storage Temperature -55 - 125 C Notes 100 mS maximum 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 36 Typ 48 Max 75 Unit V Input Current (full load) - - 10 A Input Current (no load) - 100 - mA Remote Off Input Current - 10 - mA Input Reflected Ripple Current (rms) - 15 - mA Input Reflected Ripple Current (pk-pk) - 50 - mA - TBD - As Turn-on Voltage Threshold - 34.5 35.5 V Turn-off Voltage Threshold 32.5 33.5 - V 2 I t Inrush Current Transient Notes Tested with simulated source impedance of 10 uH, 5 Hz to 20 MHz; use a 100 uF/100 V electrolytic capacitor with ESR = 1 ohm max. at 200 kHz at 25 C. 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 13A on system board. Refer to the fuse manufacture’s datasheet for further information. Notes: 1. This converter has internal C-L-C (1uF-1.0uH-15.4uF) filter. 2. For recommended external input filter, please refer to Safety section (page 14). 3. All specifications are typical at 25 C unless otherwise stated. Output Specifications Parameter Min Typ Max Unit 11.760 12.004 12.240 V Load Regulation - ±30 ±60 mV Line Regulation - ±12 ±24 mV Regulation Over Temperature (-40deg.C-85deg.C) - ±60 ±100 mV Ripple and Noise (pk-pk) - 150 200 mV Ripple and Noise (rms) - 40 80 mV Ripple and Noise (pk-pk) under worst case - - TBD mV Output Voltage Set Point Notes Vin=48V, Io=50% load 0-20 MHz BW, with a 1µF ceramic capacitor and a 10uF Tantalum cap at output. over all operating input voltage, load and temperature conditions. 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 36 Vdc - 75 Vdc Input 12 Vdc /25 A Output, 1/4 Brick Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. March 27, 2009 Output Specifications (continued) Parameter Min Typ Max Unit Output Current Range 0 - 25 A Output DC Current Limit - 33 - A Short Circuit Surge Transient - TBD - As Turn on Time - 100 150 mS Overshoot at Turn on - 0 3 % Output Capacitance 0 - 5600 uF Notes 2 Transient Response △V50%~75% of Overshoot - - 400 mV Max Load Settling Time - - 300 uS △V75%~50% of Overshoot - - 400 mV Max Load Settling Time - - 300 uS di/dt=0.1A/us, Vin=48Vdc, Ta=25°C, with a 1µF ceramic capacitor and a 10uF Tantalum cap at the output. Note: All specifications are typical at nominal input, full load at 25°C unless otherwise stated. General Specifications Parameter Min - Typ 95.5 Max - Unit % - 250 - kHz 90 - 105 %Vo Over Temperature Protection - 125 - C Over Voltage Protection(Static) - 14 - V Weight - 60 - g Efficiency Switching Frequency Output Voltage Trim Range FIT TBD - 2.30 x 1.45 x 0.50 58.42 x 36.83 x 12.70 - Notes Vin=48V, full load This voltage is achieved by trimming up output slowly Calculated Per Bell Core SR-332 (Vin=48 V, Vo=12 V, Io=20 A, Ta = 25 9 C, FIT=10 /MTBF) Dimensions Inches (L × W × H) Millimeters (L × W × H) Isolation characteristics Input to Output - - 1500 V Input to Case - - 1500 V Output to Case - - 500 V 10M - - 2200 Isolation Resistance Isolation Capacitance ohm - pF Note: All specifications are typical 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 ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input 12 Vdc /25 A Output, 1/4 Brick Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. March 27, 2009 Efficiency Data EFFICIENCY 98.00% 96.00% 94.00% 92.00% 90.00% 36 V 48 V 88.00% 86.00% 84.00% 82.00% 80.00% 2.50 75 V 6.25 12.50 18.75 25.00 OUTPUT CURRENT(A) Thermal Derating Curves 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 4 ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input 12 Vdc /25 A Output, 1/4 Brick Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. March 27, 2009 Thermal Derating Curves (continued) Derating curve under normal input Derating curve under worse case input TBD 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 5 ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input 12 Vdc /25 A Output, 1/4 Brick Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. March 27, 2009 Ripple and Noise Waveform . 48 Vdc input, 12Vdc/25A output Note: Ripple and Noise at full load, Ta=25°C, with a 1µF ceramic capacitor and a 10uF Tantalum cap at the output. Transient Response Waveforms 50%-75% Load Transients 75%-50% Load Transients Note: Transient Response at di/dt=0.1A/uS, Ta=25°C, with 1uF ceramic cap and 10uF aluminum cap at output. 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 36 Vdc - 75 Vdc Input 12 Vdc /25 A Output, 1/4 Brick Converter March 27, 2009 Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Startup & Shutdown Rise Time Test Condition: 48Vdc input, 12Vdc/25A output, and Ta=25 deg C Startup time Startup from Vin Ch1: Vo Ch2: Vin Test Condition: 48Vdc input, 12Vdc/25A output and Ta=25 deg C Startup from on/off Ch1: Vo Ch2: on/off Test Condition: 48Vdc input, 12Vdc/25A output and Ta=25 deg C Shutdown Test Condition: 48Vdc input, 12Vdc/25A output, and 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 36 Vdc - 75 Vdc Input 12 Vdc /25 A Output, 1/4 Brick Converter March 27, 2009 Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. 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 - 18 V -0.3 - 0.8 V 2.4 - 18 V 0 - 0.75 mA Notes 0RQB-T0T12L. The remote on/off pin open, Unit off. 0RQB-T0T120. 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 8 ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input 12 Vdc /25 A Output, 1/4 Brick Converter March 27, 2009 Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Output Trim Equations Equations for calculating the trim resistor are shown below. The Trim Down resistor should be connected between the Trim pin and GND pin. The Trim Up resistor should be connected between the Trim pin and the Vout pin. Only one of the resistors should be used for any given application. Minimum trim down voltage is 10.8V Maximum trim up voltage is 12.6V. The total voltage increased by trim and remote sense should not exceed 5% of the nominal output voltage. Vout Vo _ req Rtrimdown 1[ k ] Vo Vo _ req Module Trim GND Rtrimup Rtrimdown Vout Vo _ req 1k Vo Vo _ req Module Trim Rtrimup GND Note: delta Vo _ req Vo 100 % Vo 400 5000 360 4500 Trim resi stor value,Rtrim_up(KOhm) Trim resi stor value Rtrim_down(KOhm) Vo_req=Desired (trimmed) output voltage [V] Output voltage Vo=12.006 V 320 280 240 200 160 120 80 3500 3000 2500 2000 1500 1000 500 40 0 4000 9.8 10.02 10.24 10.46 10.68 10.9 11.12 11.34 11.56 11.78 Adjusted output voltage Vo,adj (V) 12 0 12 12.12 12.24 12.36 12.48 12.6 12.72 12.84 12.96 13.08 13.2 Adjusted output voltage Vo,adj(V) 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 36 Vdc - 75 Vdc Input 12 Vdc /25 A Output, 1/4 Brick Converter March 27, 2009 Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Remote Sense This module has remote sense compensation feature. It can minimize the effects of resistance between module’s output and load in system layout and facilitates accurate voltage regulation at load terminals or other selected point. 1. The remote sense lines carries very little current and hence do not require a large cross-sectional area. 2. This module compensates for a maximum drop of 5% of the nominal output voltage. 3. If the unit is already trimmed up, the available remote sense compensation range should be correspondingly reduced. The total voltage increased by trim and remote sense should not exceed 5% of the nominal output voltage. 4. When using remote sense compensation, all the resistance, parasitic inductance and capacitance of the system are incorporated within the feedback loop of this module. It can make an effect on the module's compensation, affecting the stability and dynamic response. A 0.1uF ceramic capacitor can be connected at the point of load to de-couple noise on the sense wires. 5. Recommend the connection of remote sense compensation as below figure. There are a resistor RS+ (30.1 ohm) from Vo+ to Sense+ and a resistor RS- (30.1 ohm)) from Vo- to Sense- inside of this module. RS+ Vo+ Sense+ Load RS- Sense- V o- 6. If not using remote sense compensation, please connect sense directly to output at module's pin, that is, connect sense+ to Vo+ and sense- to Vo- at module's pin, the shorter the better. See below figure. RS+ V o+ Sense+ Load RS- Sense- Vo- Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com 10 ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input 12 Vdc /25 A Output, 1/4 Brick Converter March 27, 2009 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 overcurrent condition persists beyond a few milliseconds, the module will shut down into hiccup mode and restart once every 344mS. The module operates normally when the output current goes into specified range. The typical average output current is 0.3A during hiccup. CH1: Output voltage waveform CH2: output current waveform and 1A/10mV Test at: 48Vdc input, over current output and Ta=25 deg C Expansion of on time portion of above figure Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com 11 ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input 12 Vdc /25 A Output, 1/4 Brick Converter March 27, 2009 Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Over Voltage Protection The output overvoltage protection consists of circuitry that monitors the voltage on the output terminals. If the voltage on the output terminals exceeds the over voltage protection threshold, the module will shutdown into latch off mode. The overvoltage latch can be reset by either cycling the input power or toggling the on/off signal for one second at least. Note: Due to maximum duty cycle limt, output voltage can not be trimed up to OVP set point in low line input. Test setup: Vo+ K Trim R Vo- R=10k ohm CH1: Input voltage waveform CH2: Output voltage waveform Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com 12 ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input 12 Vdc /25 A Output, 1/4 Brick Converter March 27, 2009 Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Over Temperature Protection The OTP is achieved by thermistor R25 and the threshold is set at 120C in non-latch mode; the hottest component Q13 reaches 125C with 100LFM air flow correspondingly. It will restart automatically when the temperature falls down to 110C. The protecting point will be varied a little under different conditions (air flow, ambient temperature, input voltage, load...). The hottest component on the top side: Q13 The thermistor on the bottom side: R25 Input Under-voltage Lockout Input Current Under-voltage Lockout Voltage Falling Voltage Rising V1 V2 V1=33.5V V2=34.5V 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 13 ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input 12 Vdc /25 A Output, 1/4 Brick Converter March 27, 2009 Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Safety & EMC Safety 1. Material flammability 2. TUV Certification 3. UL Certification UL94V-0 EN60950-1 UL60950-1 EMC 1. Surge IEC61000-4-5 2. DC-DIP IEC61000-4-29 3. Conductive EMI EN55022 class B Compliance to EN55022 class B (both q.peak and average) with the following inductive and capacitive filter C5 L1 L2 + + C3 C1 C4 C2 R Module - - C6 Item Designator Parameter Vendor Vendor P/N 1 C1 2.2uF/100V,ceramic Murata GRF32ER72A225KA11L 2 C2 2.2uF/100V,ceramic Murata GRF32ER72A225KA11L 3 C3 2.2uF/100V,ceramic Murata GRF32ER72A225KA11L 4 C4 270uF/100V,AL Cap Nichicon UHE2A271MHD 5 C5 2200pF/2000V,ceramic Johanson 202R29W222KV4E 6 C6 2200pF/2000V,ceramic Johanson 202R29W222KV4E 7 L1 0.809mH, common mode VAC T60004-L2025-W622 8 L2 0.809mH, common mode VAC T60004-L2025-W622 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com 14 ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input 12 Vdc /25 A Output, 1/4 Brick Converter March 27, 2009 Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Safety & EMC (continued) Positive Negative Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com 15 ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input 12 Vdc /25 A Output, 1/4 Brick Converter March 27, 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 16 ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input 12 Vdc /25 A Output, 1/4 Brick Converter March 27, 2009 Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Mechanical Outline Pin Connections pin# 1 2 3 4 5 6 7 8 function Vin (+) On/Off Vin (-) Vo (-) Sense (-) Trim Sense (+) Vo (+) pin size 0.04" 0.04" 0.04" 0.06" 0.04" 0.04" 0.04" 0.06" 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 17 ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input 12 Vdc /25 A Output, 1/4 Brick Converter March 27, 2009 Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Labeling Information Top View TECHNICAL REVISIONS - The appearance of products, including safety agency certifications and D.C. (Date Code) pictured on labels, may change depending on the date manufactured. Packing Instruction TBD Revision History Date Version Changes Detail Approval 2007-5-28 A First release 2007-7-18 B Update efficiency data curve and TD curve 2009-3-27 C 1. Change to new format, include adding application, part number explaining, remote sense, OCP, OVP, OTP, UVLO, startup&shutdown, safety&EMC and so on. 2. Add input transient voltage, input C-L-C filter, recommended input fast-acting fuse on system board. 3. Update trim equations. 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. 032709 18 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