WRA-YD-4W&WRB-YD-4W Series 4W, WIDE INPUT, ISOLATED & REGULATED DUAL/SINGLE OUTPUT DC DC--DC CONVERTER SELECTION GUIDE Input Order code FEATURES Wide (2:1) Input Range ◆ 24Pin DIP Package ◆ 1500VDC Isolation ◆ Operating Temperature: -40℃～﹢85℃ ◆ High Efficiency Up To 83% ◆ Low Profile Metal Package ◆ Continuous Short Circuit Protection ◆ Pin-Compatible With Multiple Manufacturers ◆ RoHS Compliance ◆ MTBF>1000Khours ◆ MODEL SELECTION WRB①24②15③Y④ D⑤-4W(267)⑥ ①Product Series ②Input Voltage ③Output Voltage ④Wide (2:1) Input Range ⑤DIP24 Package Style ⑥Rated Power(Output current) APPLICATIONS The WRA_YD-4W & WRB_YD-4W Series are specially designed for applications where a wide range input voltage power supplies are isolated from the input power supply in a distributed power supply system on a circuit board.These products apply to: 1 ） Where the voltage of the input power supply is wide range (Voltage range≤2:1); 2 ） Where isolation is necessary between input and output (Isolation voltage≤1500VDC); 3）Where the regulation of the Output voltage and the output ripple noise are demanded. MICRODC RESERVES THE COPYRIGHT http://www.microdc.cn Output Voltage(VDC) Voltage Current max. 9VDC - 18VDC 3.3VDC 1000mA 9VDC - 18VDC 5VDC 800mA 12 9VDC - 18VDC 7.2VDC 556mA WRB1209YD-4W 12 9VDC - 18VDC 9VDC 444mA WRB1212YD-4W 12 9VDC - 18VDC 12VDC 333mA WRB1215YD-4W 12 9VDC - 18VDC 15VDC 267mA WRB1218YD-4W 12 9VDC - 18VDC 18VDC 222mA WRB1224YD-4W 12 9VDC - 18VDC 24VDC 167mA WRB2403YD-1000 24 18VDC - 36VDC 3.3VDC 1000mA WRB2405YD-4W 24 18VDC - 36VDC 5VDC 800mA WRB2407YD-4W 24 18VDC - 36VDC 7.2VDC 556mA WRB2409YD-4W 24 18VDC - 36VDC 9VDC 444mA WRB2412YD-4W 24 18VDC - 36VDC 12VDC 333mA WRB2415YD-4W 24 18VDC - 36VDC 15VDC 267mA WRB2418YD-4W 24 18VDC - 36VDC 18VDC 222mA WRB2424YD-4W 24 18VDC - 36VDC 24VDC 167mA WRB4803YD-1000 48 36VDC - 72VDC 3.3VDC 1000mA WRB4805YD-4W 48 36VDC - 72VDC 5VDC 800mA WRB4807YD-4W 48 36VDC - 72VDC 7.2VDC 556mA WRB4809YD-4W 48 36VDC - 72VDC 9VDC 444mA WRB4812YD-4W 48 36VDC - 72VDC 12VDC 333mA WRB4815YD-4W 48 36VDC - 72VDC 15VDC 267mA WRB4818YD-4W 48 36VDC - 72VDC 18VDC 222mA WRB4824YD-4W 48 36VDC - 72VDC 24VDC 167mA WRA1203YD-500 12 9VDC - 18VDC ±3.3VDC ±500mA WRA1205YD-4W 12 9VDC - 18VDC ±5VDC ±400mA WRA1207YD-4W 12 9VDC - 18VDC ±7.2VDC ±278mA WRA1209YD-4W 12 9VDC - 18VDC ±9VDC ±222mA WRA1212YD-4W 12 9VDC - 18VDC ±12VDC ±167mA WRA1215YD-4W 12 9VDC - 18VDC ±15VDC ±133mA WRA1218YD-4W 12 9VDC - 18VDC ±18VDC ±111mA WRA1224YD-4W 12 9VDC - 18VDC ±24VDC ±83mA WRA2403YD-500 24 18VDC - 36VDC ±3.3VDC ±500mA WRA2405YD-4W 24 18VDC - 36VDC ±5VDC ±400mA WRA2407YD-4W 24 18VDC - 36VDC ±7.2VDC ±278mA WRA2409YD-4W 24 18VDC - 36VDC ±9VDC ±222mA WRA2412YD-4W 24 18VDC - 36VDC ±12VDC ±167mA WRA2415YD-4W 24 18VDC - 36VDC ±15VDC ±133mA WRA2418YD-4W 24 18VDC - 36VDC ±18VDC ±111mA WRA2424YD-4W 24 18VDC - 36VDC ±24VDC ±83mA WRA4803YD-500 48 36VDC - 72VDC ±3.3VDC ±500mA WRA4805YD-4W 48 36VDC - 72VDC ±5VDC ±400mA WRA4807YD-4W 48 36VDC - 72VDC ±7.2VDC ±278mA WRA4809YD-4W 48 36VDC - 72VDC ±9VDC ±222mA WRA4812YD-4W 48 36VDC - 72VDC ±12VDC ±167mA WRA4815YD-4W 48 36VDC - 72VDC ±15VDC ±133mA WRA4818YD-4W 48 36VDC - 72VDC ±18VDC ±111mA WRA4824YD-4W 48 36VDC - 72VDC ±24VDC ±83mA Nominal Range WRB1203YD-1000 12 WRB1205YD-4W 12 WRB1207YD-4W Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 1 of 3 WRA-YD-4W&WRB-YD-4W Series General Specifications Input Specifications Voltage range 12VDC, 9~18VDC Efficiency 73% to 81% 24VDC, 18~36VDC Switching Frequency 250KHz, typ. 100% load 48VDC, 36~72VDC Filter p(Pi) Network Isolation Specifications Output Specifications Voltage accuracy ±1%, max. Voltage balance (Dual Output) ±1% Rated voltage (60 sec) 1500 VDC Ripple & noise (at 20MHz BW) 60mVp-p, max. Resistance > 1000MOhm Short circuit protection Continuous 120pF, typ. Short circuit restart Automatic Line voltage regulation ±0.5%, max. -40°C ... +85°C Load voltage regulation ±0.5%, max. Storage temperature -55°C ... +125°C Temperature coefficient ±0.02%/°C, typ. Case temperature +100°C, max. Derating None required Humidity (non-condensing) Up to 90% Cooling Free-air Convection Capacitance Environmental Specifications Operating temperature (ambient) MTBF: > 1,036,000 hrs (MIL-HDBK-217F, Ground Benign, t=+25°C) Specifications are subject to change without notification Physical Specifications Dimensions 31.75x20.32x10.16mm 1.25x0.8x0.4inches Weight 19g Case material Nickel-Coated Copper TYPICAL CHARACTERISTICS APPLICATION NOTE Temperature Derating Graph Requirement on output load In order to ensure the product operate efficiently and reliably,in addition to a max load(namely full load), a minimum load is specified for this kind of DC/DC converter.Make sure the specified range of input voltage is not exceeded,the minimum output load no less than 10% load load.If the actual load is less than the specified minimum load, the output ripple may increase sharply while its efficiency and reliability will reduce greatly.If the actual output power is very small,please add an appropriate resistor as extra loading,or contact our company for other lower output power products. RECOMMENDED CIRCUIT Recommended Circuit All the WRA_YD-4W&WRB_YD-4W Series have been tested according to the following recommended testing circuit before leaving factory.This series should be tested under load(See figure 1). If you want to further decrease the input/output ripple,you can increase capacitance properly or choose capacitors with low ESR. However, the capacitance of the output filter capacitor must be proper. If the capacitance is too big, a startup problem might arise. For every channel of output, provided the safe and reliable operation is ensured, the greatest capacitance of its filter capacitor sees (Table 1). General: Cin: 5V＆12V 100μF 24V＆48V 100μF-47μF Cout: 10μF/100mA Output Graph Input current While using unstable power source,please ensure the output voltage and ripple voltage do not exceed indexes of the converter. Input current of power supply should afford the startup current of this kind of DC/DC module (See figure 2). General:Ip≤1.4*Iin-max No parallel connection or plug and play http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 2 of 3 WRA-YD-4W&WRB-YD-4W Series OUTLINE DIMENSIONS ＆ FOOTPRINT DETAILS RECOMMENDED FOOTPRINT MECHANICAL DIMENSIONS Note: Unit:mm[inch] Pin section tolerances:±0.10mm[±0.004inch] General tolerances:±0.25mm[±0.010inch] RECOMMENDED FOOTPRINT Top view grid:2.54mm(0.1inch) diameter:1.00mm(0.039inch) TUBE OUTLINE DIMENSIONS FOOTPRINT DETAILS Pin Single Dual 2、3 -V Input -V Input 9 N.C Common 11 N.C -V Output 14 +V Output +V Output 16 -V Output Common 22、23 +V Input +V Input NC:No connection When the environment temperature is higher than 71℃, the product output power should be less then 60% of the rated power. No parallel connection or plug and play. Use dual output simultaneously,forbid pening output pin (0V) to use as single output. Note: Unit :mm[inch] General tolerances:±0.50mm[±0.020inch] L=530mm[20.866inch] Tube Quantity: 15pcs L=220mm[8.661inch] Tube Quantity: 6pcs Note: 1. The load shouldn't be less than 10%, otherwise ripple will increase dramatically. 2. Operation under 10% load will not damage the converter; However, they may not meet all specification listed. 3. All specifications measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 4. In this data sheet, all the test methods of indications are based on corporate standards. 5. Only typical models listed, other models may be different, please contact our technical person for more details. http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 3 of 3