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Name: SD-350
Product catalog: DC DC Converter

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350W Single Output DC-DC Converter   SD-350B series
2:1 wide input range
Protections: Short circuit / Overload / Over voltage / Over temperature
1500VAC I/O isolation
Forced air cooling by built-in DC Fan
100% full load burn-in test
24V (B) and 48V(C) input voltage design refer to LVD
1 year warranty

Model SD-350B
DC Voltage 5V 12V 24V 48V
Rated Current 57A 27.5A 14.6A 7.3A
Current Range 0~57A 0~27.5A 0~14.6A 0~7.3A
Rated Power 285W 330W 350.4W 350.4W
Ripple & Noise 100mVp-p 120mVp-p 150mVp-p 200mVp-p
Voltage Adj. Range 4.5~5.5VDC 11~16VDC 23~30VDC 43~53VDC
Voltage Tolerance ±2.0% ±1.0% ±1.0% ±1.0%
Line Regulation ±0.5% ±0.3% ±0.2% ±0.2%
Load Regulation ±1.0% ±1.0% ±1.0% ±1.0%
Setup, Rise Time  300ms,50ms at full load
Voltage Range 19~36VDC
Efficiency 74% 80% 80% 84%
DC Current 14.4A/24V 16A/24V 17.6A/24V 17.6A/24V
Over Load 105~135% rated output power
Protection type: Shut down o/p voltage,re-power on to recover
Over Voltage 5.75~6.75V 16.8~20V 31.5~37.5V 53~65V
Protection type: Shut down o/p voltage,re-power on to recover
Over Temperature 95℃± 5℃(TSW1) detect on main power transistor 
Protection type: Shut down o/p voltage, recovers automatically after temperature goes down
Working Temp. -20~+60℃ (Refer to “Derating Curve”)
Working Humidity 20~90%RH non-condensing
Storage Temp., Humidity -40~+85℃,10~95%RH
Temp. Coefficient ±0.03%/℃ (0~50℃)
Vibration 10~500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes
Safety Standards IEC60950-1CB approved by TUV(for D type only)
Withstand Voltage I/P-O/P:1.5KVAC   I/P-FG:1.5KVAC   O/P-FG:0.5KVAC 
Isolation Resistance I/P-O/P,I/P-FG,O/P-FG:100M Ohms/500VDC /25℃ /70%RH 
EMC Emission Compliance to EN55022(CISPR22) Class B
EMC Immunity Compliance to EN61000-4-2,3,4,6,8,light industry level,criteria A 
Dimension 215*115*50mm(L*W*H)
Weight 1.1Kg
Packing 12pcs/14.4Kg/0.92CUFT
1. All parameters NOT specially mentioned are measured at 24,48,96VDC input, rated load and 25℃ of ambient temperature.
2. Ripple & noise are measured at 20MHz of bandwidth by using a 12” twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor.
3. Tolerance : includes set up tolerance, line regulation and load regulation.
4. The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets EMC directives.

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