A power converter, a PFC controller and an electronic device
CN120262915BActive Publication Date: 2026-01-27SHENZHEN LEDFRIEND OPTOELECTRONICS
Patent Information
- Application Number
- CN202510331616.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2045-03-20
Smart Images
Figure CN120262915B_ABST
Abstract
The application provides a power converter, a PFC controller and an electronic device. When the voltage of an intermediate DC power source is less than a first threshold voltage, the PFC controller controls a PFC boost circuit to maintain the voltage on a DC bus at a first target PFC voltage by using the intermediate DC power source. When the voltage of the intermediate DC power source is greater than a second threshold voltage, the PFC controller controls the PFC boost circuit to stop working, and a charge pump PFC circuit maintains the voltage on the DC bus at a second target PFC voltage under the driving of a resonance current generated by an LLC resonance conversion circuit. When the voltage of the intermediate DC power source changes from a voltage less than the first threshold voltage or greater than the second threshold voltage to a maintained voltage range, the PFC controller maintains the control action on the PFC boost circuit unchanged before the change.
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Citation Information
Patent Citations
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