发明名称 |
Slope compensation for switching regulator |
摘要 |
In one embodiment, a switching regulator comprises a control circuit that activates and deactivates at least one power switch to control a voltage of a switching node. The system also comprises an inductor that conducts a current from the switching node to an output to generate an output voltage. The system further comprises a PWM comparison circuit that controls an on-time and/or an off-time of the at least one power switch based on a comparison of a feedback voltage and a reference voltage. The PWM comparison circuit comprises a ramp signal generator configured to provide a ramp signal having a non-zero slope that is combined with either the feedback voltage or the reference voltage at a beginning of either the on-time or the off-time. The PWM comparison circuit can be further configured to set the slope of the ramp signal to zero during the off-time in a discontinuous conduction mode.
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申请公布号 |
US7595624(B2) |
申请公布日期 |
2009.09.29 |
申请号 |
US20060605918 |
申请日期 |
2006.11.29 |
申请人 |
TEXAS INSTRUMENTS INCORPORATED |
发明人 |
TATEISHI TETSUO;SANZO CHRISTOPHER JOHN |
分类号 |
G05F1/565 |
主分类号 |
G05F1/565 |
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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