ISOLATED DC/DC CONVERTERS 18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Nove 25, 2009 0RSB-40U03A RoHS Compliant Rev.A Features • Isolated • Output Over-Voltage Shutdown • High Efficiency • Output Voltage Trim • High Power Density • OCP/SCP • Fixed Frequency (500 kHz) • Over Temperature Protection • Low Cost • Remote On/Off • Input Under-Voltage Lockout • Positive/Negative Remote Sense • Basic Insulation • Comply with ANSI T1.315 • 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 0RSB-40U03A is an isolated dc/dc converter that operates from a nominal 24 Vdc or 48 Vdc source. This unit will provide up to 33 W of output power from an 18-75 Vdc wide input range. This 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 through hole package. Part Selection Output Voltage 3.3 Vdc Input Voltage 18 Vdc - 75 Vdc Max. Output Current 10 A Max. Output Power 33 W Typical Efficiency 87.5% Model Number Active Low 0RSB-40U03A Notes: Add “G” suffix at the end of the model number to indicate Tray Packaging. Part Number Explanation 0 R SB – 40 U 03 A 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 48V wide (18-75V) 6---Output voltage 3.3V 7---Option 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 3.3 Vdc /10 A Output, 1/16 Brick Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Nove 25, 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 18 Typ 48 Max 75 Unit V Input Current (full load) - - 3.0 A Input Current (no load) - 60 120 mA Remote Off Input Current - 1 3 mA Input Reflected Ripple Current (rms) - 3 7 mA Input Reflected Ripple Current (pk-pk) - 20 50 mA I t Inrush Current Transient - - 0.02 As Turn-on Voltage Threshold 16.0 17.2 18.0 V Turn-off Voltage Threshold 15.6 16.8 17.6 V 2 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 3A 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 Min 3.25 Typ 3.3 Max 3.35 Unit V Load Regulation - ±4 ±9 mV Line Regulation - ±3 ±8 mV Regulation Over Temperature (-40deg.C-85deg.C) - ±9 ±16 mV Ripple and Noise (pk-pk) - 55 90 mV Ripple and Noise (rms) - 12 25 mV Ripple and Noise (pk-pk) under worst case - - 120 mV Notes Vin=48V, Io=50% load 0-20 MHz BW, with a 1µF ceramic capacitor and a 330uF 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 18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Nove 25, 2009 Output Specifications (continued) Parameter Min Typ Max Unit Output Current Range 0 - 10 A Output DC Current Limit 11 14 16 A Short Circuit Surge Transient - - 1 As Rise Time - 10 15 mS - 25 50 mS Enable form Vin - 25 50 mS Enable form ON/OFF - 0 5 % 330 - 4700 uF Turn on Time Overshoot at Turn on Output Capacitance Notes 2 Transient Response △V50%~75% of Overshoot - 180 250 mV Max Load Settling Time - 80 150 uS △V75%~50% of Overshoot - 180 250 mV Max Load Settling Time - 80 150 uS di/dt=0.1A/us, Vin=48Vdc, Ta=25°C, with a 1µF ceramic capacitor and a 330uF 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 85 Typ 87.5 Max - Unit % - 500 - kHz 2.97 - 3.63 V Over Temperature Protection - 125 130 °C Over Voltage Protection(Static) - 4 4.9 V Weight - 14 - g Efficiency Switching Frequency Output Voltage Trim Range FIT TBD - 1.30 x 0.90 x 0.46 33.02 x 22.86 x 11.69 - - - V 10M - - 3900 Notes Vin=48V, full load Calculated Per Bell Core SR-332 (Vin=48 V, Vo=3.3 V, Io=8 A, Ta = 25 9 °C, FIT=10 /MTBF) Dimensions Inches (L × W × H) Millimeters (L × W × H) Isolation characteristics Input to Output Isolation Resistance Isolation Capacitance 1500 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 18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Nove 25, 2009 Efficiency Data 90% 85% EFFICIENCY 80% 18V 24V 75% 70% 48V 75V 65% 60% 55% 50% 1 2.5 5 7.5 10 OUTPUT CURRENT (A) Thermal Derating Curves Maximum junction temperature of semiconductors derated to 120 degree C. Top View 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 3.3 Vdc /10 A Output, 1/16 Brick Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Nove 25, 2009 Thermal Derating Curves (continued) Derating curve under 24Vdc input Derating curve under 48Vdc input 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 18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Nove 25, 2009 Ripple and Noise Waveform . 48 Vdc input, 3.3Vdc/10A output Note: Ripple and Noise at full load, Ta=25°C, with a 1µF ceramic capacitor and a 330uF Tantalum cap at the output. Transient Response Waveforms 75%-50% Load Transients 50%-75% Load Transients Note: Transient Response at di/dt=0.1A/uS, Ta=25°C, with 1uF ceramic cap and 330uF 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 6 ISOLATED DC/DC CONVERTERS 18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Nove 25, 2009 Startup & Shutdown Rise Time Test Condition: 48Vdc input, 3.3Vdc/10A output, and Ta=25 deg C Startup time Startup from Vin Ch1: Vo Ch2: Vin Test Condition: 48Vdc input, 3.3Vdc/10A output and Ta=25 deg C Startup from on/off Ch1: Vo Ch2: on/off Test Condition: 48Vdc input, 3.3Vdc/10A output and Ta=25 deg C Shutdown Test Condition: 48Vdc input, 3.3Vdc/10A 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 18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Nove 25, 2009 Remote On/Off Parameter Signal Low (Unit On) Signal High (Unit Off) Active Low Current Sink Min -0.3 Typ - Max 0.8 Unit V 2.4 - 18 V 0 - 1 mA Notes The remote on/off pin open, Unit 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 8 ISOLATED DC/DC CONVERTERS 18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Nove 25, 2009 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 2.97V Maximum trim up voltage is 3.63V. The total voltage increased by trim and remote sense should not exceed 10% of the nominal output voltage. Rtrimdown = Vout 511 − 10.22[kΩ ] delta Module Trim GND Rtrimup = (100 + delta ) ⋅ Vo ⋅ 5.11 − 626 − 10.22[kΩ] 1.225 ⋅ delta Rtrimdown Vout Module Trim Rtrimup GND Note: delta = (Vo _ req − Vo ) × 100 [% ] Vo 300 1500 270 1350 240 1200 Trim resistor value,Rtrim_up(KOhm) Trim resistor value Rtrim_down(KOhm) Vo_req=Desired (trimmed) output voltage [V] Output voltage Vo=3.308 V 210 180 150 120 90 60 1050 900 750 600 450 300 150 30 0 2.64 2.71 2.77 2.84 2.9 2.97 3.04 3.1 3.17 3.23 Adjusted output voltage Vo,adj (V) 3.3 0 3.3 3.33 3.37 3.4 3.43 3.46 3.5 3.53 3.56 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 3.6 3.63 9 ISOLATED DC/DC CONVERTERS 18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Nove 25, 2009 Remote Sense This module has remote sense compensation feature. It can minimizes the effects of resistance between moudle's output and load in system layout and facilitates accutate 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+ (100 ohm) from Vo+ to Sense+ and a resistor RS- (51 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 18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Nove 25, 2009 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 400mS. The module operates normally when the output current goes into specified range. The typical average output current is 1A during hiccup. 48Vin 24Vin 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 18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Nove 25, 2009 Over Temperature Protection The OTP is achieved by thermistor R65 and the threshold is set at 120C in non-latch mode; the hottest component Q5 reaches 130C 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: Q5 The thermistor on the bottom side: R65 Input Under-voltage Lockout Input Current Under-voltage Lockout Voltage Falling Voltage Rising V1 V2 V1=16.8V V2=17.2V 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 12 ISOLATED DC/DC CONVERTERS 18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Nove 25, 2009 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 0.040" 0.040" 0.040" 0.062" 0.040" 0.040" 0.040" 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 13 ISOLATED DC/DC CONVERTERS 18 Vdc - 75 Vdc Input 3.3 Vdc /10 A Output, 1/16 Brick Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Nove 25, 2009 Revision History Date Revision 2009-11-25 A Changes Detail Approval First release Jack Fan 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. 112509 14 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