Invention Grant
- Patent Title: Variable time clamp for a power supply controller
- Patent Title (中): 电源控制器的可变时间钳
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Application No.: US12976771Application Date: 2010-12-22
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Publication No.: US08427848B2Publication Date: 2013-04-23
- Inventor: Leif Lund
- Applicant: Leif Lund
- 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

Abstract:
An example integrated circuit for use in a power supply includes a feedback terminal and a controller having a variable time clamp (VTC). The feedback terminal is to be coupled to receive a feedback signal and the controller is to be coupled to enable or disable the conduction of a power switch during a switching cycle in response to the feedback signal. The controller includes a current limit comparator coupled to terminate the conduction of the power switch during an enabled switching cycle in response to a current through the power switch exceeding a variable current limit. The VTC is coupled to clamp the feedback terminal to a voltage for a clamp time that is responsive to the variable current limit.
Public/Granted literature
- US20120161739A1 VARIABLE TIME CLAMP FOR A POWER SUPPLY CONTROLLER Public/Granted day:2012-06-28
Information query
IPC分类: