发明授权
US09263934B2 Method and apparatus for determining zero-crossing of an ac input voltage to a power supply
有权
用于确定交流输入电压到电源的过零点的方法和装置
- 专利标题： Method and apparatus for determining zero-crossing of an ac input voltage to a power supply
- 专利标题（中）： 用于确定交流输入电压到电源的过零点的方法和装置
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申请号： US13974884申请日： 2013-08-23
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公开(公告)号： US09263934B2公开(公告)日： 2016-02-16
- 发明人: Yury Gaknoki , Mingming Mao , Tiziano Pastore
- 申请人： Power Integrations, Inc.
- 申请人地址： US CA San Jose
- 专利权人： Power Integrations, Inc.
- 当前专利权人： Power Integrations, Inc.
- 当前专利权人地址： US CA San Jose
- 代理机构： Blakely Sokoloff Taylor & Zafman LLP
- 主分类号： H02M3/335
- IPC分类号： H02M3/335 ; H02M1/08 ; H02M7/06
摘要：
An example controller for a power supply includes a first circuit and a drive signal generator. The first circuit receives a first signal representative of a switch current flowing through a switch of the power supply and then generates a second signal in response the switch current not reaching a current threshold within an amount of time. The second signal indicates when a dimming circuit at an input of the power supply is utilized. The drive signal generator generates a drive signal to control switching of the switch in response to the second signal, where energy is transferred across an energy transfer element of the power supply in response to the switching of the switch.
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