发明授权
US07944720B2 Semiconductor integrated circuit, PWM signal output device, and power conversion control apparatus
有权
半导体集成电路,PWM信号输出装置和电力转换控制装置
- 专利标题: Semiconductor integrated circuit, PWM signal output device, and power conversion control apparatus
- 专利标题(中): 半导体集成电路,PWM信号输出装置和电力转换控制装置
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申请号: US12192007申请日: 2008-08-14
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公开(公告)号: US07944720B2公开(公告)日: 2011-05-17
- 发明人: Takahiro Suzuki , Yasuo Notohara , Tsunehiro Endo , Yuji Mori
- 申请人: Takahiro Suzuki , Yasuo Notohara , Tsunehiro Endo , Yuji Mori
- 申请人地址: JP Kawasaki-shi
- 专利权人: Renesas Electronics Corporation
- 当前专利权人: Renesas Electronics Corporation
- 当前专利权人地址: JP Kawasaki-shi
- 代理机构: Miles & Stockbridge P.C.
- 优先权: JP2007-232721 20070907
- 主分类号: H02M1/10
- IPC分类号: H02M1/10
摘要:
Provided is a control technique of a PWM conversion type power converter capable of compensating for a voltage error due to voltage drop mainly at a switching element and managing a switching time of a PWM signal at the same time, and capable of suppressing increase/decrease of software operation load and addition of a hardware circuit to the minimum. A semiconductor integrated circuit having a PWM signal generating unit which generates a PWM signal is provided with a PWM timer unit including a counter counting a pulse width of a pulse signal inputted from the outside with delay from a PWM signal, a register loading a counter value of the counter in synchronization with the PWM signal, and an A/D converting unit converting an analog signal serving as a source signal of the pulse signal inputted from the outside to a digital signal.