- Patent Title: AC line detection and X capacitor discharge using a single terminal
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Application No.: US15906959Application Date: 2018-02-27
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Publication No.: US10170975B1Publication Date: 2019-01-01
- Inventor: Guang Feng , Qifeng Shi , Jiang Yu , Qiu Sha , Yong Xiong Lin
- Applicant: DIALOG SEMICONDUCTOR INC.
- Applicant Address: US CA Campbell
- Assignee: DIALOG SEMICONDUCTOR INC.
- Current Assignee: DIALOG SEMICONDUCTOR INC.
- Current Assignee Address: US CA Campbell
- Agency: Haynes and Boone, LLP
- Main IPC: H02M1/12
- IPC: H02M1/12 ; H02J3/24 ; H02M5/293 ; H02M5/12
Abstract:
A controller for a switching power converter is provided with a single detection pin through which the controller monitors whether the switching power converter is connected to an AC mains. Should a voltage for the detection pin indicate that the switching power converter is disconnected from the AC mains, the controller asserts the detection pin voltage to trigger a bleeder circuit to discharge an X class capacitor.
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