Patent ID: 9362835
Filing Date: 2016-06-07
CPC Classification: H02M,Y02B,Y02P

Claim Text:
1. A resonant power conversion apparatus comprising: a switch-based resonant converter configured to supply power to a load; and a controller coupled to the switch-based resonant converter and the load and configured to control switching of the switch-based resonant converter to regulate power conversion of the switch-based resonant converter, wherein the controller has a voltage control loop and a current control loop, the controller detects a driving state of the load, and enables one of the voltage control loop and the current control loop according to a result of detecting the driving state of the load to adjust a switching frequency of the switch-based resonant converter, wherein the controller detects a load current flowing through the load and a driving voltage applied to the load, when the controller determines the load current is smaller than a predetermined current, the controller enables the voltage control loop to adjust the switching frequency according to the driving voltage, and when the controller determines the load current is larger than or equal to the predetermined current, the controller enables the current control loop to adjust the switching frequency according to the load current.