Input voltage Vin 110 to 240 V, switching frequency fs = 250 kHz, Vo = 185-380 V, rated load power

Po = 4 kW.

The designer considers the following three topologies:

1. Voltage-fed Full-bridge PWM DC-DC Converter with inductive output filter assuming 5% duty cycle loss

2. Voltage-fed Dual Active Bridge (DAB) converter with the capacitive output filter

3. Current-fed Half-bridge PWM DC-DC Converter with capacitive output filter and active clamping with the total rectifier diode conduction time limited to 42%. And the switch voltage is limited to 275 V.

Calculate (show all calculation steps with formulas) and finally prepare a table for:

1) Series or transformer leakage inductance

2) Transformer turns ratio

3) Primary side (source side) device voltage rating

4) Secondary side (load side) device voltage

Answer rating: 100% (QA)

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