Invention Grant
US09525342B2 Power converter with pseudo-constant-on-time control and the control circuit and method thereof
有权
具有伪恒定导通时间控制的电力转换器及其控制电路及其方法
- Patent Title: Power converter with pseudo-constant-on-time control and the control circuit and method thereof
- Patent Title (中): 具有伪恒定导通时间控制的电力转换器及其控制电路及其方法
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Application No.: US14752638Application Date: 2015-06-26
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Publication No.: US09525342B2Publication Date: 2016-12-20
- Inventor: Lei Li
- Applicant: Chengdu Monolithic Power Systems Co., Ltd.
- Applicant Address: CN Chengdu
- Assignee: CHENGDU MONOLITHIC POWER SYSTEMS CO., LTD.
- Current Assignee: CHENGDU MONOLITHIC POWER SYSTEMS CO., LTD.
- Current Assignee Address: CN Chengdu
- Priority: CN201410300831 20140626
- Main IPC: H02M3/157
- IPC: H02M3/157 ; H02M3/156 ; H02M3/158 ; H02M1/00
Abstract:
A control circuit for controlling a switching circuit is disclosed. The control circuit has a ramp compensation circuit, a ramp regulating circuit and a comparison circuit. The ramp compensation circuit generates a ramp compensation signal with the amplitude proportional to the difference between 1 and the duty cycle of a main switch of the switching circuit. The ramp regulating circuit generates a ramp regulating signal with the amplitude proportional to the duty cycle of the main switch. The comparison circuit compares a reference signal with the sum of the ramp compensation signal, the ramp regulating signal and a feedback signal representative of an output voltage of the switching circuit, so as to provide a comparison result to control the switching circuit.
Public/Granted literature
- US20150381049A1 POWER CONVERTER WITH PSEUDO-CONSTANT-ON-TIME CONTROL AND THE CONTROL CIRCUIT AND METHOD THEREOF Public/Granted day:2015-12-31
Information query
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