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公开(公告)号：US20090160418A1
公开(公告)日：2009-06-25
申请号：US12327001
申请日：2008-12-03
申请人： Norihiro KAWAGISHI , Yuichi OKUBO
发明人： Norihiro KAWAGISHI , Yuichi OKUBO
IPC分类号： G05F3/16
CPC分类号： H02M3/156 , H02M2001/0009 , H02M2001/0025
摘要： A DC-DC converter includes a reference voltage generation circuit. The reference voltage generation circuit generates a reference voltage for determination of the pulse width of a drive signal to be supplied to a switching circuit. The reference voltage generation circuit includes a current sensing circuit. The current sensing circuit has a first MOS transistor, a second MOS transistor, a resistive element and an amplifier circuit.
摘要翻译： DC-DC转换器包括参考电压产生电路。 参考电压产生电路产生用于确定要提供给开关电路的驱动信号的脉冲宽度的参考电压。 参考电压产生电路包括电流检测电路。 电流感测电路具有第一MOS晶体管，第二MOS晶体管，电阻元件和放大器电路。
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公开(公告)号：US20090160416A1
公开(公告)日：2009-06-25
申请号：US12333450
申请日：2008-12-12
申请人： Norihiro Kawagishi , Yuichi Okubo
发明人： Norihiro Kawagishi , Yuichi Okubo
IPC分类号： G05F1/46
CPC分类号： H02M3/156 , H02M2001/0025
摘要： A DC-DC converter generates an optimal slope compensation voltage in response to input and output voltages, thus capable of maintaining its operational stability even when a dynamic range of the output voltage is widen. The DC-DC converter compares an error voltage corresponding to a difference between a feedback voltage of the output voltage and a reference voltage with a ramp signal whose voltage level corresponds to a current detection signal, so as to configure an off-timing of an output transistor. A slope of the ramp signal is configured so that the ramp signal is proportional to a difference between the output voltage and the input voltage. A slope compensation circuit for generating the ramp signal includes an adding circuit for generating a slope controlling electric current corresponding to a voltage in which a voltage corresponding to the input voltage is subtracted from a voltage corresponding to the output voltage, and a capacitor electrically charged with the slope controlling current.
摘要翻译： DC-DC转换器响应于输入和输出电压产生最佳斜率补偿电压，因此即使当输出电压的动态范围变宽时也能保持其运行稳定性。 DC-DC转换器将对应于输出电压的反馈电压和参考电压之间的差的误差电压与其电压电平对应于电流检测信号的斜坡信号进行比较，以便配置输出的断开定时 晶体管。 斜坡信号的斜率被配置为使得斜坡信号与输出电压和输入电压之间的差成比例。 用于产生斜坡信号的斜坡补偿电路包括一个加法电路，用于产生一个斜率控制电流，该斜坡控制电流对应于一个电压，在该电压中，从与输出电压相对应的电压中减去对应于输入电压的电压， 斜率控制电流。
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公开(公告)号：US07859242B2
公开(公告)日：2010-12-28
申请号：US12327001
申请日：2008-12-03
申请人： Norihiro Kawagishi , Yuichi Okubo
发明人： Norihiro Kawagishi , Yuichi Okubo
CPC分类号： H02M3/156 , H02M2001/0009 , H02M2001/0025
摘要： A DC-DC converter includes a reference voltage generation circuit. The reference voltage generation circuit generates a reference voltage for determination of the pulse width of a drive signal to be supplied to a switching circuit. The reference voltage generation circuit includes a current sensing circuit. The current sensing circuit has a first MOS transistor, a second MOS transistor, a resistive element and an amplifier circuit.
摘要翻译： DC-DC转换器包括参考电压产生电路。 参考电压产生电路产生用于确定要提供给开关电路的驱动信号的脉冲宽度的参考电压。 参考电压产生电路包括电流检测电路。 电流感测电路具有第一MOS晶体管，第二MOS晶体管，电阻元件和放大器电路。
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