1000W full-bridge switching power supply based on PM4040F design-EEWORLD

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The kilowatt-class switching power supply made of PM4040F consists of a main circuit diagram and two different circuit diagrams for the output part. You can use the single-voltage part or the dual-voltage part circuit diagram according to your needs to form a complete switching power supply circuit diagram with the main circuit diagram.

Except for the resistors with marked power, all other resistors can be 0.5 watt resistors. Since it is a high-frequency current, the filter electrolytic capacitors in the DC output part are relatively small in order to reduce high-frequency losses.

Transformer winding method: All can be calculated at 8.5V/turn, and the wire current can be calculated at 4.5A/square. The output voltage and current can be wound according to your needs.

Since there are still many experiments being completed, we will publish experimental reports and completed experimental circuit versions one after another. Please pay attention to the updates here.

Regarding the frequency of using IGBT tubes, we recommend that you use IGBT tubes when making high-power switching power supplies. Its advantages are low temperature and large current, but its operating frequency requirements are lower. The general operating frequency is 30KHz to 60KHz, so when using IGBT for high-power AC/DC and DC/DC, you must pay attention to the operating frequency.

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