发明授权
US08901910B2 System and method of predictive current feedback for switched mode regulators
有权
开关模式调节器的预测电流反馈的系统和方法
- 专利标题: System and method of predictive current feedback for switched mode regulators
- 专利标题(中): 开关模式调节器的预测电流反馈的系统和方法
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申请号: US13531751申请日: 2012-06-25
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公开(公告)号: US08901910B2公开(公告)日: 2014-12-02
- 发明人: Steven P. Laur , M. Jason Houston , Rhys S. A. Philbrick , Thomas A. Jochum
- 申请人: Steven P. Laur , M. Jason Houston , Rhys S. A. Philbrick , Thomas A. Jochum
- 申请人地址: US CA Milpitas
- 专利权人: Intersil Americas LLC
- 当前专利权人: Intersil Americas LLC
- 当前专利权人地址: US CA Milpitas
- 代理商 Gary Stanford
- 主分类号: G05F1/00
- IPC分类号: G05F1/00
摘要:
A predictive current feedback system for a switched mode regulator including a sample and hold network for sampling voltage across a lower switch of the regulator and for providing a hold signal indicative thereof, and a predictive current feedback network which adds an offset adjustment to the hold signal based on a duration of a pulse width of a pulse control signal developed by the regulator. Sampling may be done while the lower switch is on for providing a hold value indicative of inductor current while the pulse control signal is low. The offset adjustment may be added to the hold signal in response to a transient event when the pulse signal is high. The offset may be incremental values after each of incremental time periods after a nominal time period, or may be a time-varying value. Adjustment may be made while the pulse signal is low as well.
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