The LLC power converter operates with zero-voltage turn-on and zero-current turn-off of the secondary-side rectifier, featuring low switching losses and a convenient magnetic integration solution.

It has been widely used in TV, medical, industrial and LED power supplies, covering power products ranging from 100W to 1000W.
The following content focuses on the working principle of the LLC topology, voltage and current waveforms, engineering verification of key parameters, and engineering calculation examples of key device parameters in actual product design, for the reference of power converter R&D personnel.

Document Name	Content Description	Key Features	Release Date	Document Download
Principle and Theoretical Calculation of Key Devices for LLC Power Converters	Briefly introduces LCR resonance types, focusing on the topology principle of LLC power converters and the theoretical calculation of power and magnetic devices	LLC power conversion topology, working sequence, theoretical calculation of devices, calculation examples	2025/5/21
Design Steps and Examples of LLC Power Devices	This document briefly collates the engineering calculation methods of LLC power converters, and takes the input of 300Vdc to 400Vds and output voltage and current of 12V 18A as an example to illustrate the parameter design of power devices and resonant cavity devices	Engineering formula derivation of LLC power converters and parameter design examples of power devices	2025/5/30