Off fault detection for power converters
By designing a switching circuit system and a disconnection fault detection circuit system in the power converter, the problem of difficulty in fault detection in the prior art is solved, and reliable detection and reporting of disconnection fault conditions is achieved, ensuring the stability and safety of the system.
CN119787768APending Publication Date: 2025-04-08TEXAS INSTRUMENTS INC
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Patent Information
- Application Number
- CN202411349450.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-02-23
- Filing Date
- 2024-09-26
- Publication Date
- 2025-04-08
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Figure CN119787768A_ABST
Abstract
An example multiphase power converter circuit (100) includes a first power stage (102) configured to provide a first phase output signal at a first switching output (122) based on a first control signal. The first power stage (102) includes first off-fault detection circuitry (114) configured to deactivate detection and / or reporting of an off-fault condition in response to a first control signal. The second power stage (104) is configured to provide a second phase output signal at a second switching output (136) based on a second control signal. The second power stage (104) includes second off-fault detection circuitry (116) configured to enable detection and / or reporting of an off-fault condition in response to the second control signal having a value to turn off the second power stage. The second open fault detection circuitry (116) is further configured to detect an open fault condition based on the voltage at the second switched output (136).
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