LM3478: lm3478 Typical Flyback Circuit

Lin_Charles

Expert 4260 points

Part Number: LM3478

Hi, all

LM3478 is used in flyback power supply. How to determine the reverse voltage of Z1 TVS tube?

over 7 years ago

0 Garrett Roecker over 7 years ago

TI__Mastermind 21720 points

Hi Charles,

The clamp voltage must be larger than the reflected voltage of the output. This can also be an RC snubber which will sometimes help reduce the cost. Please also so this guide for designing the LM3478 as a flyback.
www.ti.com/.../snva761.pdf

Thanks,

Garrett

Power management

Power management forum

LM3478: lm3478 Typical Flyback Circuit