High Density DC-DC Modules PS50W Series 25 - 50 Watt 4:1 Input DC-DC Converters Single Output Features • 25W-50W Isolated Output • Efficiency to 84% • 300KHz Switching Frequency • 4:1 Input Range • Regulated Outputs • Continuous Short Circuit Protection • Five-Sided Metal Case • Industry Standard Half-Brick Package MODEL INPUT OUTPUT VOLTAGE VOLTAGE INPUT CURRENT %EFF NO LOAD FULL LOAD NOTE: 1. Nominal Input Voltage 24, 48VDC

High Density DC-DC Modules www.powersolve.co.uk Electrical Specification INPUT Input Voltage Range 24V 48V 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 9-36V 18-75V 8.8V 8V 17V 16V Pi Type +1% max. <500µsec. +10% 40mV RMS., max. 100mV pk-pk, max. 60mV RMS., max. 150mV pk-pk, max. 100mV RMS., max. 240mV pk-pk, max. ENVIRONMENTAL Temperature Coefficient Short Circuit Protection Line Regulation1 Load Regulation2...

High Density DC-DC Modules www.powersolve.co.uk Application Note Derating: The operating case temperature range of the PS50W series is -40°Cto +100°C. When operating the PS50W series, proper derating or cooling is needed. Following is the derating curve of PS50W without heat sink. Power Dissipated vs Ambient Temperature and Air Flow HIGH SIGNAL HERE DISABLE OUTPUT 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...

High Density DC-DC Modules Logic Table www.powersolve.co.uk Remote ON/OFF Control Logic State Negative Logic The PS50W Series allows the user to switch the module on and off electronically with (Pin 2) on/off feature. remote ON/OFF (2) Logic The PS50W Series are available in "positive logic" or "negative logic" (option). Table Positive Logic HIGH SIGNAL HERE DISABLE OUTPUT Logic High Module on Module off Logic State Open Negative Logic Switch Positive Logic Module off Module on AL HERE OUTPUT HIGH SIGNAL HERE DISABLE OUTPUT Logic High - Switch Open Logic High - Switch Open External Output Trimming...