ISOLATED DC/DC CONVERTERS 18 Vdc - 75 Vdc Input 5 Vdc / 8 A Output, 1/16 Brick Bel Power Inc., a subsidiary of Bel Fuse Inc. May 24, 2011 0RSB-40U05B RoHS Compliant PRELIMINARY Rev.A Features Isolated Input Under Voltage Lockout Fixed Frequency Output Over Voltage Shutdown High Efficiency OCP/SCP High Power Density Over Temperature Protection Low Cost Positive/Negative Remote Sense Output Voltage Trim Remote On/Off Basic Insulation Through Hole 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 0RSB-40U05B is an isolated dc/dc converter that operates from a nominal 24 Vdc or 48 Vdc source. The unit will provide up to 40 W of output power from an 18-75 Vdc wide input range. The unit is designed to be highly efficient and low cost. Features include remote on/off, over current protection and under voltage lockout. This converter is provided in an industry standard sixteenth brick package. Part Selection Output Voltage Input Voltage 5.0 Vdc 18 Vdc - 75 Vdc Max. Output Current 8A Max. Output Power 40 W Typical Efficiency 87% Model Number Active Low 0RSB-40U05B Note: Add “G” suffix at the end of the model number to indicate Tray Packaging. Part Number Explanation 0 R SB – 40 U 05 B 1 2 3 4 5 6 7 1---Through hole 2---RoHS 6, change “R” to “7” means RoHS 5 3---Series name, 1/16 Brick 4---Series code 5---Input range (18-75V) 6---Output voltage (5V) 7---Enable, active low, pin length is 0.11 inch 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 18 Vdc - 75 Vdc Input 5 Vdc / 8 A Output, 1/16 Brick Bel Power Inc., a subsidiary of Bel Fuse Inc. May 24, 2011 Absolute Maximum Ratings Max Unit - 80 V - 100 V -0.3 - 18 V - - 1500 V Ambient Temperature -40 - 85 C Storage Temperature -55 - 125 C Parameter Input Voltage (continuous) Input Transient Voltage Remote On/Off I/O Isolation Voltage Min Typ -0.3 - 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 Input Voltage Min 18 Typ 48 Max 75 Unit V Input Current (full load) - - 3.5 A Input Current (no load) - 60 120 mA Remote Off Input Current - 1 3 mA Input Reflected Ripple Current (pk-pk) - 20 50 mA Input Reflected Ripple Current (rms) - 3 7 mA 78 - 82 V I t Inrush Current Transient - 0.01 0.02 As Turn-on Voltage Threshold 16.6 17.2 17.8 V Turn-off Voltage Threshold 16.2 16.8 17.4 V Input Over Voltage Lockout 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 Note: All specifications are typical at nominal input, full load at 25 C unless otherwise stated. Output Specifications Parameter Min Typ Max Unit 4.925 5.000 5.075 V Load Regulation - ±4 ±9 mV Line Regulation - ±4 ±9 mV Regulation Over Temperature(-40 C to +85 C) - ±15 ±30 mV Total Regulation - ±23 ±48 mV Ripple and Noise (pk-pk) - 70 120 mV Ripple and Noise (rms) - 25 50 mV Output Current Range 0 - 8 A Output Voltage Set Point Notes Vin=48 V; Io=50% load 0-20MHz BW, with a 1µF ceramic capacitor and a 10uF Tantalum 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 2 ISOLATED DC/DC CONVERTERS 18 Vdc - 75 Vdc Input 5 Vdc / 8 A Output, 1/16 Brick Bel Power Inc., a subsidiary of Bel Fuse Inc. May 24, 2011 Output Specifications (continued) Parameter Min Typ Max Unit 8.8 10 12.5 A Short Circuit Surge Transient - 0.5 1 As Turn on Time - 25 50 mS Overshoot at Turn on - 0 5 % 150 - 2200 uF Overshoot - 250 350 mV Settling Time - 100 200 mS - 250 350 mV - 100 200 mS Output DC Current Limit Output Capacitance 2 Notes Hiccup mode, auto recovery. Transient Response 25% ~ 50% Max Load 50% ~ 25% Max Load Overshoot Vo=5 V Settling Time di/dt=0.1A/us, Vin=48Vdc, Ta=25°C, with a 1µF ceramic capacitor and a 10uF Tantalum cap at output. Note: All specifications are typical at nominal input, full load at 25°C unless otherwise stated. General Specifications Parameter Efficiency Switching Frequency Over Temperature Protection Output Voltage Trim Range Over Voltage Protection Min Typ Max Unit 85 87 - % - 500 - KHz - 125 - C 90 - 110 % - 130 160 % Dimensions 1.30 x 0.90 x 0.46 33.02 x 22.86 x 11.69 Inches (L × W × H) Millimeters (L × W × H) Weight Notes Vin=48 V, full load The OTP threshold is set at 125C in non-latch mode, and the module will restart automatically when temperature falls down to 115C. This voltage is achieved by trimming up output slowly. - - 14 - g - - 1500 V 10M - - Ohm - 3900 - pF Isolation characteristics Input to Output Isolation Resistance 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 18 Vdc - 75 Vdc Input 5 Vdc / 8 A Output, 1/16 Brick Bel Power Inc., a subsidiary of Bel Fuse Inc. May 24, 2011 Efficiency Data 90% 85% EFFICIENCY 80% 18V 75% 24V 48V 75V 70% 65% 60% 55% 50% 0.80 2.00 4.00 6.00 8.00 OUTPUT CURRENT (A) Thermal Derating Curve 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 18 Vdc - 75 Vdc Input 5 Vdc / 8 A Output, 1/16 Brick Bel Power Inc., a subsidiary of Bel Fuse Inc. May 24, 2011 Thermal Derating Curve (continued) Derating curve under normal input Vin= 48Vdc Vin= 24Vdc The OTP is achieved by thermistor R65 and the threshold is set at 120C in non-latch mode; the hottest component Q5 reaches 125C with 100LFM air flow correspondingly. It will restart automatically when the temperature falls down to 115C. The protecting point will be varied a little under different conditions (air flow, ambient temperature, input voltage, load...). 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 5 ISOLATED DC/DC CONVERTERS 18 Vdc - 75 Vdc Input 5 Vdc / 8 A Output, 1/16 Brick Bel Power Inc., a subsidiary of Bel Fuse Inc. May 24, 2011 Ripple and Noise Waveform 48Vdc input, 5Vdc output Note: Ripple and noise at full load, with a 1uF ceramic cap and a 10 uF Tantalum cap at output, Ta=25 deg C. Transient Response Waveforms Vout= 5V 50%-25% Load Transients Vout= 5V 25%-50% Load Transients Note: Transient Response at di/dt=0.1A/uS, Vin=48Vdc, with an External 100uF Tantalum Cap and 1uF Ceramic Cap, 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 18 Vdc - 75 Vdc Input 5 Vdc / 8 A Output, 1/16 Brick Bel Power Inc., a subsidiary of Bel Fuse Inc. May 24, 2011 Startup Rise time Start up time Ch1: Vo Ch2: Vin Vin=48V, Vo=5V, 100% Load Vin=48V, Vo=5V, 100% Load Note: Start up waveform, tested with an External 220uF Tantalum Cap and 1uF Ceramic Cap, Ta=25 deg C. Remote On/Off Parameter Signal Low (Unit On) Signal High (Unit Off) Current Sink Active Low - Min -0.3 Typ - Max 0.8 Unit V 2.4 - 18 V 0 - 1 mA Notes Remote On/Off pin is open, the module is 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 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 18 Vdc - 75 Vdc Input 5 Vdc / 8 A Output, 1/16 Brick Bel Power Inc., a subsidiary of Bel Fuse Inc. May 24, 2011 Output Trim Equations Equations for calculating the trim resistor are shown below (Unit: kΩ). The Trim Down resistor should be connected between the Trim pin and Ground pin. The Trim Up resistor should be connected between the Trim pin and the Vout. Only one of the resistors should be used for any given application. Vout Rtrimdown 511 10 .22 k delta Module Trim GND Rtrimdown Vout (100 delta) Vo 5.11 626 Rtrimup 10.22 k 1.225 delta Module Trim Rtrimup GND Note: delta Vo _ req Vo 100 % Vo 400 2500 360 2250 320 2000 Trim resistor value,Rtrim_up(KOhm) Trim resistor valueRtrim_down(KOhm) Vo_req=Desired(trimmed) output voltage[V] Output voltage Vo=5.002V 280 240 200 160 120 80 40 0 1750 1500 1250 1000 750 500 250 4 4.1 4.2 4.3 4.4 4.5 4.6 4.7 Adjusted output voltageVo,adj (V) 4.8 4.9 5 0 5 5.05 5.1 5.15 5.2 5.25 5.3 5.35 Adjusted output voltageVo,adj(V) Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com 5.4 5.45 8 5.5 ISOLATED DC/DC CONVERTERS 18 Vdc - 75 Vdc Input 5 Vdc / 8 A Output, 1/16 Brick Bel Power Inc., a subsidiary of Bel Fuse Inc. May 24, 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+ (51 ohm) from Vo+ to Sense+ and a resistor RS- (10 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 9 ISOLATED DC/DC CONVERTERS 18 Vdc - 75 Vdc Input 5 Vdc / 8 A Output, 1/16 Brick Bel Power Inc., a subsidiary of Bel Fuse Inc. May 24, 2011 Mechanical Outline Pin Connections Pin 1 2 3 4 5 6 7 8 Function Vin (+) On/Off Vin (-) Vout (-) SENSE(-) Trim SENSE(+) Vout (+) Dia. 0.04’’ 0.04’’ 0.04’’ 0.062’’ 0.04’’ 0.04’’ 0.04’’ 0.062’’ 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 10 ISOLATED DC/DC CONVERTERS 18 Vdc - 75 Vdc Input 5 Vdc / 8 A Output, 1/16 Brick Bel Power Inc., a subsidiary of Bel Fuse Inc. May 24, 2011 Revision History Date Revision 2011-05-24 PA 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. 052411 11 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