Invention Grant
US09590608B2 Bootstrap refresh control circuit, voltage converter and associated method
有权
自举刷新控制电路，电压转换器及相关方法
- Patent Title: Bootstrap refresh control circuit, voltage converter and associated method
- Patent Title (中): 自举刷新控制电路，电压转换器及相关方法
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Application No.: US14823900Application Date: 2015-08-11
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Publication No.: US09590608B2Publication Date: 2017-03-07
- Inventor: Li Xu
- 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: CN201410390708 20140811
- Main IPC: H02M3/156
- IPC: H02M3/156 ; H03K17/06 ; H02M1/08 ; H02M3/158
Abstract:
A voltage converter having a bootstrap refresh control circuit and a method for controlling the voltage converter. The bootstrap refresh control circuit monitors a bootstrap voltage across a bootstrap capacitor and provides a high side driving signal to a high side switch of the voltage converter. The bootstrap refresh control circuit also controls the charging of the bootstrap capacitor through decreasing the output voltage of the voltage converter once the bootstrap voltage is dropped to be smaller than a bootstrap refresh threshold. When the output voltage of the voltage converter is decreased enough, the bootstrap refresh control circuit switches the high side switch and the low side switch on and off to refresh the bootstrap voltage.
Public/Granted literature
- US20160043642A1 BOOTSTRAP REFRESH CONTROL CIRCUIT, VOLTAGE CONVERTER AND ASSOCIATED METHOD Public/Granted day:2016-02-11
Information query
IPC分类:
