ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input, 15 Vdc/5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Aug. 22, 2011 0REB-80T15x RoHS Compliant PRELIMINARY Rev.A Features Isolated Remote On/Off) High Efficiency Input Under Voltage Protection Fixed Frequency (300 KHz) Output Over Voltage Protection High Power Density OCP/SCP Low Cost Over Temperature Protection Class 2, Category 2, Isolated DC/DC Converter (refer to IPC-9592) Applications Networking Computers and peripherals Telecommunications Description The 0REB-80T15x is an isolated DC/DC converter that operates from a nominal 48 Vdc source. This converter provides up to 75W of output power. Features include remote on/off, short circuit protection, over current protection, over-temperature protection, output over-voltage protection,input under-voltage protection. Part Selection Output Voltage Input Voltage 15 Vdc 36 Vdc - 75 Vdc Max. Output Current 5A Max. Output Power 75 W Typical Efficiency 92% Model Number Active Low 0REB-80T15L Model Number Active High 0REB-80T150 Notes: Add “G” suffix at the end of the model number to indicate Tray Packaging. Part Number Explanation 0 R EB – 80 T 15 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 (36-75V) 6---Output voltage (15V) 7---Enable, “0” means active high, and “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, 15 Vdc/5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Aug. 22, 2011 Absolute Maximum Ratings 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 Parameter Continuous non-operating Input Voltage Input Transient Voltage Remote On/Off I/O isolation voltage Notes 100mS 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) - - 2.8 A Input Current (no load) - 60 100 mA Remote Off Input Current - 5 10 mA Input Reflected Ripple Current (rms) - 2 5 mA Input Reflected Ripple Current (pk-pk) - 10 20 mA I t Inrush Current Transient - - 1 As Turn-on Voltage Threshold 34.5 35 35.5 V Turn-off Voltage Threshold 33 33.5 34 V 2 Notes With simulated source impedance of 10uH, 5Hz to 20MHz. Use a 100uF/100V electrolytic capacitor with ESR=1 ohm max, at 200KHz@25°C. 2 Other information: Input C-L-C filter Recommended input fast-acting fuse on system board 0.47uF-2.2uH-4.4uF - 4 - A CAUTION:This converter is not internally fused. An input line fuse must be used in application. 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 4A on system board. Refer to the fuse manufacture’s datasheet for further information. Notes: 1. This converter has internal C-L-C (0.47uF-2.2uH-4.4uF) filter. 2. 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 2 ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input, 15 Vdc/5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Aug. 22, 2011 Output Specifications Parameter Min Typ Max Unit 14.85 15 15.15 V Load Regulation - 0.1 0.2 % Vin=48V, Io=0~100% load at o 25 C ambient. Line Regulation - 0.1 0.2 % Vin=36~75V,Io=100% load at o 25 C ambient Regulation Over Temperature (-40deg.C-85deg.C) - - 1 % Output Voltage Set Point Notes o Vin=48V, Io=50% load at 25 C ambient. o Ripple and Noise (pk-pk) - 60 100 mV Ripple and Noise (rms) - 15 30 mV Ripple and Noise(Pk-Pk) under worst case - - 150 mV Output Current Range 0 - 5 A 5.5 6 6.5 A Short Circuit Surge Transient - - TBD As Rise time - - 10 ms - - 40 ms - - 20 ms Overshoot at Turn on - 0 3 % Output Capacitance 0 - 1000 uF △V 50% - 75% of Max Load - 250 300 mV Settling Time - 400 500 uS △V 75% - 50% of Max Load - 250 300 mV Settling Time - 400 500 uS Output DC Current Limit Turn on Time Vin=48V, Io=100%load at 25 C ambient, 0-20MHz BW, with a 1µF ceramic capacitor and a 100uF Electrolytic cap at output. over all operating input voltage, load and ambient temperature condition 2 Transient Response di/dt=0.1A/us, Vin=48Vdc, Ta=25°C, with a 1µF ceramic capacitor and a 100uF Electrolytic cap at output. Note: All specifications are typical at nominal input, full load at 25°C unless noted. 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, 15 Vdc/5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Aug. 22, 2011 General Specifications Parameter Min Typ Max Unit Efficiency 90 92 - % Switching Frequency 290 300 310 kHz Output Voltage Trim Range 80 - 110 % - TBD - - Over Temperature Protection - 125 - ℃ Over Voltage Protection(Static) - - 18 V Over Voltage Protection (Dynamic) - - 18 V Weight - TBD - g - - 1500 V 10M - - Ohm - 2700 - pF FIT 2 Notes The efficiency is measured at Vin=48V, full load and Ta=25°C. Calculated Per Bell Core SR-332 (Vin=48 V, Vo=15 V, Io=5 A, Ta = 9 25C, FIT=10 /MTBF) This voltage is achieved by trimming up output slowly. The transient over voltage is achieved by connecting the Trim pin to Vout+ pin through a 332K resistor. Isolation characteristics Input to Output Isolation Resistance Isolation Capacitance Note: All specifications are typical at 25 C unless otherwise stated. Efficiency Data 95.0% EFFICIENCY 90.0% 85.0% 36 V 80.0% 48 V 75.0% 75 V 70.0% 65.0% 60.0% 0.5A 1.25A 2.5A 3.75A 5A 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 36 Vdc - 75 Vdc Input, 15 Vdc/5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Aug. 22, 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 - 18 V -0.3 - 0.8 V 2.4 - 18 V 0 - 1 mA Notes Remote On/Off pin is open, the module is off. Remote On/Off pin is open, the module is 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 36 Vdc - 75 Vdc Input, 15 Vdc/5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Aug. 22, 2011 Output Trim Equations Equations for calculating the trim resistor are shown below. The Trim Down resistor should be connected between the Trim pin and Sense (-) pin. The Trim Up resistor should be connected between the Trim pin and the Sense (+). Only one of the resistors should be used for any given Minimum trim down voltage is 12V Maximum trim up voltage is 16.5V. The total voltage increased by trim and remote sense should not exceed 10% of the nominal output voltage. Vout +sense 511 R 10.2[ k ] trimdow n % Trim Rtrim_down -sense GND 5.11 V 100 % 510 o R 10.2k trimup 1.225 % % Vout +sense Rtrim_up Trim Note: % -sense GND V DES Vo 100 Vo Vo_req=Desired (trimmed) output voltage [V] Output voltage Vo=15.000 V 7103 Trim resistor value,Rtrim_up(KOhm) Trim resistor value Rtrim_down(KOhm) 2103 1.8103 1.610 3 1.4103 1.210 3 110 3 800 600 . 400 200 0 12 12.3 12.6 12.9 13.2 13.5 13.8 14.1 14.4 14.7 Adjusted output voltage Vo,adj (V) 15 6.3103 5.6103 4.9103 4.2103 3.5103 2.8103 2.1103 1.4103 700 0 15 15.15 15.3 15.45 15.6 15.75 15.9 16.05 16.2 16.35 16.5 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 6 ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input, 15 Vdc/5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Aug. 22, 2011 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 10% 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 10% of the nominal output voltage. 4. When using remote sense compensation, all the resistance, parasitic inductance and capacitance of the system are incorpotated within the feedback loop of this module. The 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+ (51.1 ohm) from Vo+ to Sense+ and a resistor RS- (51.1 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 7 ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input, 15 Vdc/5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Aug. 22, 2011 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 500mS. The module operates normally when the output current goes into specified range. The typical average output current is 215mA during hiccup. Expansion of on time portion of above figure CH4: Output current waveform Vin=48V 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. Test setup: Waveform: CH1: Output voltage waveform R=332K Vo+ K Trim R VoSense+ K Trim R Sense- 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, 15 Vdc/5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Aug. 22, 2011 Input Under-voltage Lockout Input Current Under-voltage Lockout Voltage Falling V1=33V V2=35V Voltage Rising V1 V2 Input Voltage (V) Ripple and Noise Waveform 48Vdc input, 15Vdc/5A output Note: Ripple and noise at full load, with a 1uF ceramic cap and a 100uF electrolytic 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 9 ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input, 15 Vdc/5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Aug. 22, 2011 Transient Response Waveforms Vout= 15V 50%-75% Load Transients Vout= 15V 75%-50% Load Transients Note: Transient Response :di/dt=0.1A/uS, 1uF ceramic cap and 100uF electrolytic cap at output. Startup & Shutdown Rise Time Vin=48V, Vo=15V, Io=5A 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, 15 Vdc/5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Aug. 22, 2011 Startup time Startup from Vin Ch1: Vo Ch3: Vin Vin=48V, Vo=15V, Io=5A Startup from on/off Ch1: Vo Ch3: on/off Vin=48V, Vo=15V, Io=5A Startup & Shutdown (continued) Shutdown Vin=48V, Vo=15V, Io=5A 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, 15 Vdc/5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Aug. 22, 2011 Thermal Derating Curve The OTP is achieved by thermistor R12 and the threshold is set at 125C in non-latch mode; the hottest component Q1 reaches 125C with 100LFM air flow correspondingly. It will restart automatically when the temperature falls down to 100C. The protecting point will be varied a little under different conditions (air flow, ambient temperature,input voltage, load...). Maximum junction temperature of semiconductors derated to 120 degree C. Derating curve under normal input Thermal Derating Curve (continued) Temperature reference points on top side 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, 15 Vdc/5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Aug. 22, 2011 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 A Compliance to EN55022 class A (both q.peak and average) with the following inductive and capacitive filter Setup: C4 +Vin T1 Conv.positive input C1 C2 C3 Conv.negative input -Vin T1 C5 Item Designator Parameter Vendor Vendor P/N 1 C1 1uF/100V,ceramic Murata GRM32ER72A105KA01L 2 C2 0.1uF/100V, ceramic TDK C3216X7R2A104K 3 C3 220uF/100V, AL cap Nichicon UHE2A221MHD6 4 C4 22nF/1000V,ceramic +0.022uF/250V,safety Johanson Epcos 631S41W223KV4E B32022B3223+ 5 C5 22nF/1000V,ceramic +0.022uF/250V,safety Johanson Epcos 631S41W223KV4E B32022B3223+ 6 T1 1.3mH, common mode Pulse P0402NL 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, 15 Vdc/5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Aug. 22, 2011 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 14 ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input, 15 Vdc/5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Aug. 22, 2011 Mechanical Outline 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. 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/6.5 A Output OutputConverter Aug. 22, 2011 Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Revision History Date Revision 2011-8-22 A Changes Detail Approval First release JZ Wang 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. 082211 16 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