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WRD241212S-2W Datasheet(PDF) 2 Page - MORNSUN Science& Technology Ltd. |
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WRD241212S-2W Datasheet(HTML) 2 Page - MORNSUN Science& Technology Ltd. |
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2 / 2 page  MORNSUN reserves the copyright Specifications subject to change without notice. WRD_S-1W & WRD_S-2W A/1-2008 Page 2 of 2 COMMON SPECIFICATION APPLICATION NOTE Item Test Conditions Min Typ. Max Units Storage humidity 95 % Operating temperature -40 85 Storage temperature -55 125 Temp. rise at full load 15 Lead temperature 1.5mm from case for 10 seconds 300 °C Isolation voltage Tested for 1 minute and 1mA max 1000 VDC Isolation resistance Test at 500VDC 1000 M Ω Isolation Capacitance 100KHz,1V 80 pF No-load power consumption 0.1 W Cooling Free Air Convection Short circuit protection Continuous Case material Plastic(UL94-V0) MTBF 1000 K hours Weight 5.8 g Note: 1. All specifications measured at TA=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 2. See below recommended circuits for more details. TYPICAL TEMPERATURE CURVE Operating Temp.( ) C 100 OUTLINE DIMENSIONS & FOOTPRINT DETAILS FOOTPR INT DETAILS No te: Un it :mm (in ch) Pin sect ion :0. 50* 0.30 mm (0 .020* 0.0 12in ch) Pin sect ion toleran ces: 0. 05mm ( 0.0 02inch) Gen eral toleran ces: 0. 25m m( 0.0 10in ch) ±± ±± (1. 079) (0.100) 2.30 0.50 ± 1 2 6 7 8 9 10 Pin Fun ction 1 2 6 8 9 7 GND Vin 0V1 +Vo1 CS 0V2 10 +Vo2 1 2 7 9 10 68 RECOM MEN DED FOOTPR INT To p view,grid: 2.54 mm (0 .1inch) diam eter:1.00 mm(0 .039inch) Firs t Angle Projection (Bottom View) (Side View) (0.020) 0.50 CS Pin By connecting a low ESR capacitor between this terminal and the pin-7(Figure 1), the output ripple and noise may be further improved. Generally, the capacitance is no greater than 47uF. Requirement on Output Load To ensure this module can operate efficiently and reliably, During operation, the minimum output load is not less than 10% of the full load, If the actual load is less than the specified minimum load, the output ripple may increase sharply. 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 If you want to further decrease the input/output ripple, you can increase capacitance properly or choose capacitors with low ESR (Figure 1). +Vo1 0V1 Co Ci Vin GND 2 1 6 7 8 Cs Li +Vo2 0V2 Co 9 10 CS +Vo2 4 .7 -12 uH (Figure 1) 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)Cin： 5V & 12V 100 μF 24V & 48V 10 μF-47μF Lin： 10 μH-120μH Cout：100 μF(TYP) Extemal Capacitor Table(Table 1) Vout(VDC) 2W:Cout(uF) 1W:Cout(uF) 5 680 470 9 470 330 12 330 220 15 220 100 Input current While using unstable power source, please ensure the output voltage and ripple voltage do not excced indexes of the converter. The preceding power source must be able to provide for converter sufficient starting current Ip (Figure 2). General: Ip ≤1.4*Iin-max Input Voltage (V) Input Voltage Range Ip No parallel connection or plug and play. |
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