ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input, 12 Vdc/6.5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Sep. 13, 2011 0REB-80T12x RoHS Compliant Final Rev.C Features Isolated Remote On/Off Logic (Optional) High Efficiency Input Under Voltage Protection Fixed Frequency (400 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) UL60950-1 Recognized (UL/cUL) (Pending) Applications Networking Computers and peripherals Telecommunications Description The 0REB-80T12x is an isolated dc/dc converter that operates from a nominal 48 Vdc source. This converter provides up to 80 W 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. These converters are provided in an industry standard eighth brick package. Part Selection Output Voltage Input Voltage 12 Vdc 36 Vdc - 75 Vdc Max. Output Current 6.5 A Max. Output Power 80 W Typical Efficiency 93% Model Number Active Low 0REB-80T12L Model Number Active High 0REB-80T120 Notes: Add “G” suffix at the end of the model number to indicate Tray Packaging. Part Number Explanation 0 R EB – 80 T 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 (36-75V) 6---Output voltage (12V) 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, 12 Vdc/6.5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Sep. 13, 2011 Absolute Maximum Ratings Min Typ Max Unit -0.3 - 75 V - - 100 V Remote On/Off -0.3 - 18 V I/O isolation voltage 1500 - - V Ambient Temperature -40 - 85 C Storage Temperature -55 - 125 C Parameter Continuous non-operating Input Voltage Input Transient 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) - - 2.4 A Input Current (no load) - 50 100 mA Remote Off Input Current - 10 15 mA Input Reflected Ripple Current (rms) - 2 4 mA Input Reflected Ripple Current (pk-pk) - 10 20 mA I t Inrush Current Transient - - 1 As Turn-on Voltage Threshold 33 34 35 V Turn-off Voltage Threshold 30 31 33 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 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 3A 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-3.2uF) filter. 2. All specifications are typical at 25 C unless otherwise stated. Output Specifications Parameter Min Typ Max Unit 11.76 12 12.24 V Load Regulation - 0.2 0.5 % Vo,set Vin=48V, Io=0~100% load Line Regulation - 0.2 0.5 % Vo,set Vin=36~75V,Io=100% load Regulation Over Temperature (-40deg.C-85deg.C) - - 0.02 % Vo,set/C Ripple and Noise (pk-pk) - 30 50 mV Ripple and Noise (rms) - 5 15 mV Ripple and Noise (pk-pk) under worst case - - 60 mV Output Voltage Set Point Notes Vin=48V, Io=50% load Vin=48V, Io=100%load at 25C ambient, 0-20MHz BW, with a 1µF ceramic capacitor, 10uF Tantalum cap and a 220uF electrolytic cap at output. 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 36 Vdc - 75 Vdc Input, 12 Vdc/6.5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Sep. 13, 2011 Output Specifications (continued) Parameter Min Typ Max Unit Output Current Range 0 - 6.5 A Output DC Current Limit 7 8.5 10 A Short Circuit Surge Transient - - 0.05 As Rise time - - 15 mS - 25 30 mS Enable form Vin - 25 30 mS Enable form ON/OFF - 0 3 % 220 - 3000 uF Turn on Time Overshoot at Turn on Output Capacitance Transient Response △V Overshoot 50%~75% of Max Load Settling Time △V Overshoot 75%~50% of Max Load Settling Time Vo= 12 V Notes 2 - 200 250 mV - 600 750 uS - 200 250 mV - 600 750 uS di/dt=0.1A/us, Vin=48Vdc, Ta=25°C, with a 1µF ceramic capacitor, 10uF Tantalum cap and a 220uF electrolytic cap at output. Note: All specifications are typical at nominal input, full load at 25°C unless otherwise stated. General Specifications Parameter Min Typ Max Unit 90 93 - % - 400 - kHz 80 - 110 % - 110 120 ℃ 13.8 - 15 V Over Voltage Protection (Dynamic) - - 18 V Weight - 18 - g Efficiency Switching Frequency Output Voltage Trim Range Over Temperature Protection Over Voltage Protection(Static) FIT 2 525 - 2.30 x 0.90 x 0.40 58.42 x 22.86 x 10.20 - Notes Vin=48V, full load 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 100K resistor. Calculated Per Bell Core SR-332 (Vin=48V, Vo=12V, Io=5.2A, Ta = 25 9 C, FIT=10 /MTBF) Dimensions Inches (L × W × H) Millimeters (L × W × H) Isolation characteristics Input to Output 1500 - - V Isolation Resistance 10M - - Ohm - 3900 - pF Isolation Capacitance 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/6.5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Sep. 13, 2011 Efficiency Data 94% EFFICIENCY (%) 92% 90% 88% 36V 48V 86% 75 84% 82% 80% 1.625A 3.25A 4.875A 6.5A OUTPUT CURRENT (Amp) 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/6.5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Sep. 13, 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 1.8 - 18 V -0.3 - 0.8 V 1.8 - 18 V 0 - 1 mA Notes The remote on/off pin open, Unit off. 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 36 Vdc - 75 Vdc Input, 12 Vdc/6.5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Sep. 13, 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 application. Minimum trim down voltage is 9.6V Maximum trim up voltage is 13.2V. The total voltage increased by trim and remote sense should not exceed 10% of the nominal output voltage. Vout +sense Rtrimdown Rtrimup Note: 511 10.22k delta Trim Rtrim_down -sense GND (100 delta) Vo 5.11 626 10.22k 1.225 delta delta Vout +sense Rtrim_up Trim -sense GND Vo _ req Vo 100% Vo 400 5000 360 4500 Trim resistor value,Rtrim_up(KOhm) Trim resistor value Rtrim_down(KOhm) Vo_req=Desired (trimmed) output voltage [V] Output voltage Vo=12.000 V 320 280 240 200 160 120 80 40 0 4000 3500 3000 2500 2000 1500 1000 500 9.6 9.84 10.08 10.32 10.56 10.8 11.04 11.28 11.52 11.76 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 6 ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input, 12 Vdc/6.5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Sep. 13, 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 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+ (40.2 ohm) from Vo+ to Sense+ and a resistor RS- (40.2 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, 12 Vdc/6.5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Sep. 13, 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 over current condition persists beyond a few milliseconds, the module will shut down into hiccup mode and restart once every 300mS. The module operates normally when the output current goes into specified range. The typical average output current is 1.75A during hiccup. Vin=48V Expansion of on time portion Over Voltage Protection The output over voltage 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 hiccup mode and restart once every 300mS. The module operates normally when the fault is cleared. Test setup: Waveform: CH1: Output voltage waveform R=100K Vo+ K Trim R Vo- Sense+ 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, 12 Vdc/6.5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Sep. 13, 2011 Over Temperature Protection The OTP is achieved by thermistor R67 and the threshold is set at 110C in non-latch mode; the hottest component Q3 reaches 112C with 100LFM 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...). Input Under-voltage Lockout Input Current Under-voltage Lockout Voltage Falling V1=31V V2=34V 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 ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input, 12 Vdc/6.5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Sep. 13, 2011 Ripple and Noise Waveform 48Vdc input, 12Vdc/6.5A output Note: Ripple and noise at full load, with a 1uF ceramic cap and a 10 uF Tantalum cap and a 220uF electrolytic cap at output, Ta=25 deg C. Transient Response Waveforms Vout= 12V 50%-75% Load Transients Vout= 12V 75%-50% Load Transients Note: Transient Response at Vin=48V, di/dt=0.1A/uS, with a 1uF ceramic cap and a 10uF aluminum cap and a 220uF electrolytic cap at the output. 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/6.5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Sep. 13, 2011 Startup & Shutdown Rise Time Vin=48V, Vo=12V, Io=6.5A Startup time Startup from Vin Ch1: Vo Ch3: Vin Vin=48V, Vo=12V, Io=6.5A Startup from on/off Ch1: Vo Ch3: on/off Vin=48V, Vo=12V, Io=6.5A 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, 12 Vdc/6.5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Sep. 13, 2011 Startup & Shutdown (continued) Shutdown Vin=48V, Vo=12V, Io=6.5A Thermal Derating Curve Maximum junction temperature of semiconductors derated to 120 degree C. Derating curve under normal input 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/6.5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Sep. 13, 2011 Thermal Derating Curve (continued) 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 13 ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input, 12 Vdc/6.5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Sep. 13, 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 100uF/100V, AL cap Nichicon UVZ2A101MPD 4 C4 22nF/1000V,ceramic Johanson 631S41W223KV4E 5 C5 22nF/1000V,ceramic Johanson 631S41W223KV4E 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 14 ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input, 12 Vdc/6.5 A Output Sep. 13, 2011 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 15 ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input, 12 Vdc/6.5 A Output Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Sep. 13, 2011 . Mechanical Outline Pin Function Dia. 1 Vin(+) 0.04’’ 2 RC 0.04’’ 3 Vin(-) 0.04’’ 4 Vout(-) 0.062’’ 5 RS- 0.04’’ 6 TRIM 0.04’’ 7 RS+ 0.04’’ 8 Vout(+) 0.062’’ Note: 1. Pin 5 must be connected to Vout(-) 2. Pin 7 must be connected to Vout(+) 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 16 ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input, 12 Vdc/6.5 A Output OutputConverter Sep. 13, 2011 Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Revision History Date Revision 2010-09-11 PA Changes Detail Approval First release XF Jiang 1. Updated Turn-on/off voltage threshold in Input specifications. 2010-11-15 PB 2. Updated Load regulation, Line regulation, Output ripple and noise, Output DC current limit, Turn on time, Output capacitance, Transient response in Output specifications XF Jiang 3. Updated Remote on/off. 2011-09-13 PC 1、Output specs: Output DC Current Limit ,Output Capacitance, Settling Time of Transient Response，Output Ripple and Noise(RMS) XF Jiang 2、Thermal Derating Curve 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. 091311 17 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