发明申请
- 专利标题： SYSTEM AND METHOD TO CALCULATE INITIAL DUTY CYCLE
- 专利标题（中）： 计算初始占空比的系统和方法
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申请号： US11955212申请日： 2007-12-12
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公开(公告)号： US20090001946A1公开(公告)日： 2009-01-01
- 发明人: GUSTAVO JAMES MEHAS , WEI CHEN , BRUCE L. INN
- 申请人： GUSTAVO JAMES MEHAS , WEI CHEN , BRUCE L. INN
- 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
- 主分类号： G05F1/00
- IPC分类号： G05F1/00
摘要：
A system and method for determining an initial duty cycle for startup of a voltage regulator involves generating a first current source responsive to an input voltage to the voltage regulator and generating a second current source responsive to an output voltage of the voltage regulator. A first capacitor is charged using the first current source responsive to a duty cycle of a PWM signal of the voltage regulator to a first voltage. A second capacitor is charged to a second voltage responsive to a period of the PWM signal of the voltage regulator. The initial duty cycle for startup of the voltage regulator is established as the duty cycle of the PWM signal when the first voltage is substantially equal to the second voltage.
公开/授权文献
- US07764053B2 System and method to calculate initial duty cycle 公开/授权日：2010-07-27
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