发明名称 |
Pulse adding scheme for smooth phase dropping at light load conditions for multiphase voltage regulators |
摘要 |
A pulse control system for a multiphase regulator including an error amplifier, a multiphase generator, and an adaptive controller. The error amplifier provides an error signal indicative of output voltage error. The multiphase generator develops modulation pulses for phases based on the error signal. The adaptive controller is responsive to a load indication signal and redirects at least one modulation pulse from a first of phase to a second phase. The load indication signal may be received from a microprocessor indicating a low power mode. The adaptive controller provides a smooth and efficient transition to low load conditions by dropping operation of one or more phases and redirecting modulation pulses to the remaining one or more phases, and reduced phases improve power efficiency for the low load conditions. |
申请公布号 |
US8085017(B2) |
申请公布日期 |
2011.12.27 |
申请号 |
US20100873102 |
申请日期 |
2010.08.31 |
申请人 |
QIU WEIHONG;ISHAM ROBERT H.;CHEUNG CHUN;INTERSIL AMERICAS INC. |
发明人 |
QIU WEIHONG;ISHAM ROBERT H.;CHEUNG CHUN |
分类号 |
G05F1/595 |
主分类号 |
G05F1/595 |
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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