发明申请
US20120153917A1 LOW-TO-MEDIUM POWER SINGLE CHIP DIGITAL CONTROLLED DC-DC REGULATOR FOR POINT-OF-LOAD APPLICATIONS
有权
低中功率单芯片数字控制用于负载点应用的DC-DC调节器
- 专利标题： LOW-TO-MEDIUM POWER SINGLE CHIP DIGITAL CONTROLLED DC-DC REGULATOR FOR POINT-OF-LOAD APPLICATIONS
- 专利标题（中）： 低中功率单芯片数字控制用于负载点应用的DC-DC调节器
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申请号： US13332343申请日： 2011-12-20
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公开(公告)号： US20120153917A1公开(公告)日： 2012-06-21
- 发明人: Philippe C. Adell , Bertan Bakkaloglu , Bert Vermeire , Tao Liu
- 申请人： Philippe C. Adell , Bertan Bakkaloglu , Bert Vermeire , Tao Liu
- 主分类号： G05F1/46
- IPC分类号： G05F1/46
摘要：
A DC-DC converter for generating a DC output voltage includes: a digitally controlled pulse width modulator (DPWM) for controlling a switching power stage to supply a varying voltage to an inductor; and a digital voltage feedback circuit for controlling the DPWM in accordance with a feedback voltage corresponding to the DC output voltage, the digital voltage feedback circuit including: a first voltage controlled oscillator for converting the feedback voltage into a first frequency signal and to supply the first frequency signal to a first frequency discriminator; a second voltage controlled oscillator for converting a reference voltage into a second frequency signal and to supply the second frequency signal to a second frequency discriminator; a digital comparator for comparing digital outputs of the first and second frequency discriminators and for outputting a digital feedback signal; and a controller for controlling the DPWM in accordance with the digital feedback signal.
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