Invention Grant
US08258852B2 Bootstrapped high-side driver control without static DC current for driving a motor bridge circuit
有权
引导式高边驱动器控制,无静态直流电流,用于驱动电机桥电路
- Patent Title: Bootstrapped high-side driver control without static DC current for driving a motor bridge circuit
- Patent Title (中): 引导式高边驱动器控制,无静态直流电流,用于驱动电机桥电路
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Application No.: US12948890Application Date: 2010-11-18
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Publication No.: US08258852B2Publication Date: 2012-09-04
- Inventor: Lap Chi David Leung , Yat Tung Lai , Chun Fai Wong , Kam Hung Chan , Kwok Kuen David Kwong
- Applicant: Lap Chi David Leung , Yat Tung Lai , Chun Fai Wong , Kam Hung Chan , Kwok Kuen David Kwong
- Applicant Address: HK Hong Kong
- Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
- Current Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
- Current Assignee Address: HK Hong Kong
- Agency: g Patent LLC
- Agent Stuart T. Auvinen
- Main IPC: H03K17/16
- IPC: H03K17/16

Abstract:
A motor driver circuit for driving the gate node of a high-side driver transistor to a boosted voltage from a charge pump draws little or no static current from the charge pump. The gate node is pulled to the boosted voltage by a p-channel pullup-control transistor that is driven by p-channel transistors that are pumped by capacitors that cut off current flow to ground from the charge pump. An n-channel output-shorting transistor shorts the gate node to the output when the high-side driver is turned off. A coupling capacitor initializes the shorting transistor for each output transition. A p-channel output-sensing transistor generates a feedback to a second stage that drives the coupling capacitor. P-channel diode transistors and an n-channel equalizing transistor control the voltage on the coupling capacitor.
Public/Granted literature
- US20120126736A1 Bootstrapped High-Side Driver Control Without Static DC Current for Driving a Motor Bridge Circuit Public/Granted day:2012-05-24
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