Invention Grant
- Patent Title: Optimal control of charge-modulated gate drivers
- Patent Title (中): 电荷调制栅极驱动器的最优控制
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Application No.: US11506335Application Date: 2006-08-17
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Publication No.: US07932754B1Publication Date: 2011-04-26
- Inventor: Michael Eugene Broach , Michael D. Mulligan
- Applicant: Michael Eugene Broach , Michael D. Mulligan
- Applicant Address: US CA Santa Clara
- Assignee: National Semiconductor Corporation
- Current Assignee: National Semiconductor Corporation
- Current Assignee Address: US CA Santa Clara
- Main IPC: H03B1/00
- IPC: H03B1/00 ; H03K3/00

Abstract:
A system, apparatus and method is arranged to adaptively adjust drive signals for a gate controlled switch circuit such that the amount of gate swing automatically changes based on the load conditions. An adaptive gate charge modulation (GCM) technique can be utilized to dynamically adjust the drive signals so that a substantially constant voltage drop is perceived across to a gate controlled switch circuit. The voltage drop across the gate controlled switch circuit can be set to a reference level that is adjusted whenever a change in system conditions are detected. The gate charge can then be adaptively increased and decreased during operation, within maximum and minimum limits, to substantially match the voltage drop of the gate control switch circuit to the reference level.
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