WRA-YMD-20W Series 20W, WIDE INPUT, ISOLATED®ULATED DUAL OUTPUTDC-DC CONVERTER SELECTION GUIDE Input Output Efficiency (%) Capacitor Load (uF) ±835 89 ±470 Order code Voltage (VDC) Current No Load (mA) Current Full Load (mA) Voltage (VDC) Current (mA) WRA1212YMD-20W 9-18 30 1937 ±12 FEATURES WRA1215YMD-20W 9-18 30 1937 ± 15 ± 665 89 ± 330 ◆Efficiency up to 87% WRA2412YMD-20W 18-36 30 957 ±12 ± 835 90 ± 470 WRA2415YMD-20W 18-36 30 957 ± 15 ± 665 90 ± 330 WRA4812YMD-20W 36-75 20 478 ±12 ± 835 90 ± 470 WRA4815YMD-20W 36-75 20 484 ± 15 ± 665 89 ± 330 ◆Wide (2:1)Input Range ◆1500 VDC I/O Isolation ◆Short Circuit Protection (automatic recovery) *Input voltage can’t exceed this value, or will cause the permanent damage. ◆Operating Temperature: -40°C to+85°C ◆Internal SMD construction ◆Metal Shielding Package Input Specifications ◆Reg. Dual Output Voltage Range 2:1 Wide Input Input Filter PI Type Input Reflected Ripple Current¹ 20 mA pk-pk ◆Soft Start and Remote Ctrl. Start up Time (Nom. Vin and constant resistive load) 20mS, typ. ◆Over Voltage/Current Protection Output Specifications ◆RoHS Compliance Voltage Accuracy ± 1% Voltage Adjustability (Trim–only Single Output) ± 10%, max. Short Circuit Protection Indefinite (Hiccup, Automatic Recovery) Over Current Protection 140% of max. Iout Line Regulation ± 0.2% Load Regulation (0% - 100%) ± 1% (Dual) Cross Regulation³ (Dual Output) ± 5% Ripple and Noise (20Mhz bandwidth) 75 mV pk-pk Temperature Coefficient ± 0.02% /°C Transient Recovery Time4 250us, typ. Transient Response Deviation4 ± 3%, max. ◆MTBF>1,000,000 hours MODEL SELECTION ① ② ③ ④ ⑤ ⑥ WRA 12 12 Y MD -20 20W W(835) ①Product Series ②Input Voltage ③Output Voltage ④Wide (2:1) Input Range ⑤package style ⑥Rated Power(Output current) General Specifications APPLICATIONS The WRA-YMD-20W series is a family of cost effective 20 W, dual output DC/DC converters with a wide 2:1 Input. These converters are encapsulated in nickel coated copper2 ″ x1 ″ case with high performance technology like active clamp, high efficiency operation and output voltage accuracy of ± 1% maximum. Precise controlled design provides tight line / load regulation . Efficiency See Table I/O Isolation Voltage (3 sec.) 1500 VDC I/O Isolation Capacitance 1200 pF, typ. I/O Isolation Resistance 1000 M Ohm Switching Frequency 330 kHz, typ. Humidity 95% rel H Reliability Calculated MTBF (MIL-HDBK-217F) > 0.684 Mhrs Physical Specifications Case Material Nickel Coated Copper Potting Material Epoxy (UL94V-0 rated) Weight ~ 30g, typ. Environment Specifications Operating Temperature -40 to +71°C (ambient) Maximum Case Temperature 100°C Storage Temperature -40 to +125°C Cooling Free Air Convection RoHS Conform Soldering 260°C, max. (1.5mm from case 10s.) MICRODC reserves the copyright http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 1 of 3 WRA-YMD-20W Series OUTLINE DIMENSIONS& FOOTPRINT DETAILS RECOMMENDED FOOTPRINT MECHANICAL DIMENSIONS TUBE OUTLINE DIMENSIONS Note: Unit : mm[inch] Pi n diameter tolerances:±0.10mm[±0.004 inch] General tolerances:±0.25mm[±0.010 inch] PIN CONNECTIONS # DUAL 1 +Vin 2 - Vin 3 +Vout 4 Common 5 - Vout 6* Ctrl. CTRL can be added according to customers' need *CTRL OUTPUT VOLTAGE TRIM UP/DOWN Over Voltage Protection (Zender diode clamp) ±12 Vout ±15 V ±15 Vout ±18 V Under Voltage Lockout (typ.) 12 Vin Models Module ON/OFF 8.6V / 7.9V 24 Vin Models Module ON/OFF 17.8V / 16V 48 Vin Models Module ON/OFF 33.5V / 30.5V External Output Trimming Remote ON/OFF Control Output can be externally trimmed. (Single output models only!) http://www.microdc.cn ON: 3 -12 VDC or open circuit OFF: 0 – 1.2 VDC or Short circuit PIN2 and PIN6* OFF idle current: 5mA, typ. Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 2 of 3 WRA-YMD-20W Series EMC SPECIFICATIONS Radiated DERATING & EFFICIENCY CURVE EN 55022 CLASS A EN 55022 CLASS A ESD EN 61000-4-2 Perf. Criteria B RS EN 61000-4-3 Perf. Criteria A EFT6 EN 61000-4-4 Perf. Criteria B Surge6 EN 61000-4-5 Perf. Criteria B CS EN 61000-4-6 Perf. Criteria A PFMF EN 61000-4-8 Perf. Criteria A Emissions Conducted Emissions Part # C1 L WRA12xxYMD-20W EN 61000-4-4 Perf. Criteria B WRA24xxYMD-20W EN 61000-4-5 Perf. Criteria B WRA48xxYMD-20W EN 61000-4-6 Perf. Criteria A 1. Temperature derating curve 2. Efficiency Vs Input voltage WRA2412YMD-20W Efficiency VS Input voltage 1 = Measured Input reflected ripple current with a simulated source inductance of 12uH. 2 = Tested by minimal Vin and constant resistive load. 3 = One load is 25% to 100% load, the other load is100% load, the output voltage 3. Efficiency Vs Output Power WRA2412YMD-20W variable rate is within ±5%. 4 = Tested by nominal Vin and 25% load step change (75% - 50% - 25% of Io) Efficiency VS Output load 5 = Input filter components (C1, L)are used to help meet conducted emissions requirent for the module. These components should be mounted as close as possible to the module; and all leads should be minimized to decrease radiated noise. 6 = An external filter capacitor is required if the module has to meet EN61000-4-4 and EN61000-4-5 --Input filter components (C1, C2, L) are used to help meet conducted emissions requirement for the module. These components should be mounted as close as possible to the module; and all leads should be minimized to decrease radiated noise. RoHS COMPLIANT INFORMATION Microdc Professional Power Module,Inc. This series is compatible with RoHS soldering systems with a peak wave solder temperature of 300°C Tel:0086-20-86000646 E-mail:[email protected] for 10 seconds. The pin termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte Website:http://www.microdc.cn Tin with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in this series are Microdc Professional Power module,Inc.makes no representation that backward compatible with Sn/Pb soldering systems. the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or REACH COMPLIANT INFORMATION future patent rights. Specifications are subject to change without notice. This series has proven that this product does not contain harmful chemicals, it also has harmful chemical ©2010 substances through the registration, inspection and approval. Microdc Professional Power Module, Inc. Guangzhou http://www.microdc.cn Technical Enquiries-Email:[email protected] Tel:0086-20-86000646 Page 3 of 3