Invention Grant
US09543840B2 Method and apparatus for sensing multiple voltage values from a single terminal of a power converter controller
有权
用于从功率转换器控制器的单个端子感测多个电压值的方法和装置
- Patent Title: Method and apparatus for sensing multiple voltage values from a single terminal of a power converter controller
- Patent Title (中): 用于从功率转换器控制器的单个端子感测多个电压值的方法和装置
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Application No.: US14880481Application Date: 2015-10-12
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Publication No.: US09543840B2Publication Date: 2017-01-10
- Inventor: Alex B. Djenguerian , Balu Balakrishnan
- Applicant: Power Integrations, Inc.
- 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: H02M3/335
- IPC: H02M3/335 ; H02M3/24 ; H02M1/32 ; H02M1/36
Abstract:
A controller includes a switching control coupled to switch a power switch of a power converter to regulate an output of the power converter. A sensor is coupled to receive a signal from a single terminal of the controller. The signal from the single terminal is representative of a line input voltage of the power converter during at least a portion of an on time of the power switch, and an output voltage of the power converter during at least a portion of an off time of the power switch. The switching control is responsive to an output of the sensor, and includes a first current source, an internal voltage supply coupled to the first current source, and a buffer circuit coupled to receive the signal from the single terminal. The first current source is coupled to supply a first current to the buffer circuit.
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