发明授权
US08085017B2 Pulse adding scheme for smooth phase dropping at light load conditions for multiphase voltage regulators
有权
用于多相稳压器在轻负载条件下平滑相位降低的脉冲加法方案
- 专利标题： Pulse adding scheme for smooth phase dropping at light load conditions for multiphase voltage regulators
- 专利标题（中）： 用于多相稳压器在轻负载条件下平滑相位降低的脉冲加法方案
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申请号： US12873102申请日： 2010-08-31
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公开(公告)号： US08085017B2公开(公告)日： 2011-12-27
- 发明人: Weihong Qiu , Robert H. Isham , Chun Cheung
- 申请人： Weihong Qiu , Robert H. Isham , Chun Cheung
- 申请人地址： US CA Milpitas
- 专利权人： Intersil Americas Inc.
- 当前专利权人： Intersil Americas Inc.
- 当前专利权人地址： US CA Milpitas
- 代理商 Gary R. Stanford
- 主分类号： G05F1/595
- IPC分类号： G05F1/595
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.
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