Скачать или смотреть Design and Simulation of Half Bridge DC to DC Converter in PSIM | POWERSIM

This video demonstrates the design and simulation of Half-Bridge DC to DC Converter / isolated DC-DC Converter using PSIM (POWERSIM). Half Bridge DC to DC Converter is an isolated Buck converter used in SMPS applications. Half Bridge DC to DC Converter employs two switches (MOSFETS) across the transformer primary winding. When S1 is ON, current is drawn across the primary winding due to S1. Similarly, when S2 is ON current is drawn across the primary winding due to S2. Therefore current flows continuously, irrespective of the operating cycles of switches. Whereas, in an isolated converter such as flyback converter which employs only one switch, the current is drawn only when the switch is ON. One of the major differences between a push-pull converter and a half-bridge is that two input capacitors are used. Therefore the voltage of (for ex: 50V) is divided as 25V each. This implies that each switch can be rated only for 25V rather than 50V. This saves the overall cost. Hence Half-Bridge DC to DC Converter is preferred for high power ratings and is highly efficient than Push-Pull converter. The design involves a lot of assumptions and care has to be taken in assuming suitable value.

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