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Overheating of the P-ch FET when utilizing the LT8714

Thread Summary

The user designed a bipolar power supply using the LT8714, with an output voltage range of -30 to +30 V and a maximum current of 3 A. The P-channel FET is overheating, reaching temperatures over 100 degrees. The final answer suggests simulating the design in LTspice to check performance and share the design files for review. The support engineer also provides steps to access and sync the latest LTspice components.
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Category: Hardware
Product Number: LT8714

Hello, 

I designed a circuit to generate a bipolar power supply using the LT8714.

The output voltage is from -30 to +30 V, and the maximum current is expected to be 3 A.

However, the P-channel FET is generating a lot of heat. I purchased and tested several FETs with different characteristics,

but although there were small differences in heat generation, the temperature still exceeds 100 degrees. Please check whether there is a problem with my design.