发明名称 |
Switch mode converter that allows 100% duty cycle on gate driver |
摘要 |
A switch mode converter uses the bootstrap capacitor 30 to operate all the way to 100% duty cycle by adding only a very small amount of low-area extra circuitry. The additional circuitry includes a charge pump 40 and a duty cycle detect device 42. When the duty cycle detect device 42 detects that the converter is attempting to operate in 100% duty cycle, the charge pump 40 provides additional charge to the bootstrap capacitor 30 to ensure that the 100% duty cycle is maintained.
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申请公布号 |
US6812782(B2) |
申请公布日期 |
2004.11.02 |
申请号 |
US20020280743 |
申请日期 |
2002.10.25 |
申请人 |
TEXAS INSTRUMENTS INCORPORATED |
发明人 |
GRANT DAVID A. |
分类号 |
H02M3/158;(IPC1-7):G06F1/40 |
主分类号 |
H02M3/158 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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