High Density DC-DC Modules SOLVE www.powersolve.co.uk PS50 Series 25 to 50 Watt Wide Input DC-DC Converters Single Output Features • 25W/50W Isolated Output • Efficiency to 85% • 300KHz Switching Frequency • 2:1 Input Range • Regulated Outputs • Continuous Short Circuit Protection • Five-Sided Metal Case Only for Nominal Input Voltage 24 & 48 VDC INPUT CURRENT NO LOAD FULL LOAD 2740 mA 3525 mA 50 mA 5145 mA NOTE: 1. Nominal Input Voltage 12, 24 & 48 VDC

High Density DC-DC Modules www.powersolve.co.uk Electrical Specification INPUT Input Voltage Range 12V 24V 48V 12Vin power up power down 24Vin power up power down 48Vin power up power down Undervoltage lockout Positive Logic Remote ON/OFF3.4 Input Filter OUTPUT Voltage Accuracy : Transient Response : 25% Step Load Change External Trim Adj. Range Ripple & Noise, 20MHz BW, Inches Millimeters Operating case Temperature Storage Temperature Inserts Mounting M3*0.5 Through Temp. BOTTOM VIEW Thermal Shutdown, Case4pl. Dimensions 4 1.40 (35.56) 2.00 (50.80) Case Material See Table 1500VDC min. 1500VDC...

High Density DC-DC Modules www.powersolve.co.uk Application Note Derating: The operating case temperature range of the PS50 series is -40°C to +100°C. When operating the PS50 series, proper derating or cooling is needed. The following curve is the derating curve of a PS50 without heat sink. Power Dissipated vs Ambient Temperature and Air Flow 50 Natural Convection 20 ft./min. (0.1 m/s) Power Disspated, Pd (Watts) Ambient Temperature, Ta(Deg. C) Forced Convection Power Derating without Heat Sink Where: The power dissipation (Pd): Pd = Pi - Po = Po (1-n) /n The thermal resistance are listed below:...

www.powersolve.co.ukRemote ON/OFF Control The PS50 series allows the user to switch the module on and off electronically with remote on/off feature. The PS50 series are available with "positive logic" or "negative logic" (option). Logic Table t> O ON/OFF (2) HIGH SIGNAL HERE DISABLE OUTPUT External Output Trimming Output may optionally be externally trimmed (+10%) with a fixed resistor or an external trimpot as shown. TRIM DOWN TRIM (7) O ^ZZ TRIM UP -SENSE (6) O <- External OutputOutput Noise The output noise is measured with 10|iF tantalum capacitor and 1.0|iF ceramic capacitor across output....