Invention Grant
US08243480B2 Method and apparatus for a control circuit responsive to an impedance coupled to a control circuit terminal
失效
用于响应耦合到控制电路端子的阻抗的控制电路的方法和装置
- Patent Title: Method and apparatus for a control circuit responsive to an impedance coupled to a control circuit terminal
- Patent Title (中): 用于响应耦合到控制电路端子的阻抗的控制电路的方法和装置
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Application No.: US13213898Application Date: 2011-08-19
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Publication No.: US08243480B2Publication Date: 2012-08-14
- Inventor: Zhao-Jun Wang , Stefan Bäurle , David Michael Hugh Matthews
- Applicant: Zhao-Jun Wang , Stefan Bäurle , David Michael Hugh Matthews
- Applicant Address: US CA San Jose
- Assignee: Power Integrations, Inc.
- Current Assignee: Power Integrations, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Blakely Sokoloff Taylor & Zafman LLP
- Main IPC: H02H7/122
- IPC: H02H7/122

Abstract:
An example power supply controller includes a regulation circuit, a current sense circuit, and a response circuit. The regulation circuit is coupled to regulate a sense terminal to a voltage level. The current sense circuit is coupled to the sense terminal to sense a current through the sense terminal a measurement delay period after a magnitude of the current through the sense terminal reaches a first threshold current level. The response circuit is coupled to the sense circuit and is responsive to the current through the sense terminal only after the measurement delay period.
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