公开(公告)号：US20150378378A1

公开(公告)日：2015-12-31

申请号：US14663165

申请日：2015-03-19

Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd

Inventor： Hai Bo Zhang ,  Zi Yu Zeng ,  Jerry Huang

IPC: G05F1/56

CPC classification number: G05F1/56 ,  H02M1/4225 ,  H02M3/156 ,  H02M3/158 ,  H02M2001/0022

Abstract: A power converter includes an input and an output with an energy storage circuit and a power switching circuit coupled between the input and the output. A feedback circuit generates a feedback voltage which is differentially compared to a reference in an error amplifier circuit to generate an error amplification signal. A comparator circuit generates a control signal for controlling on/off of the power switching circuit based on a first comparison signal related to the error amplification signal and a second comparison signal related to a charging current of the energy storage circuit. A regulating circuit is coupled between an output of the error amplifier circuit and an input of the comparator circuit for receiving the first comparison signal, the regulating circuit is configured to couple a voltage compensation signal related to an input voltage received by the input to an output of the error amplifier, so as to reduce a variation amount of the error amplification signal when the input voltage varies.

Abstract translation: 功率转换器包括具有能量存储电路和耦合在输入和输出之间的功率开关电路的输入和输出。 反馈电路产生与误差放大器电路中的参考差分地相比较以产生误差放大信号的反馈电压。 比较器电路基于与误差放大信号相关的第一比较信号和与能量存储电路的充电电流相关的第二比较信号，产生用于控制功率开关电路的导通/截止的控制信号。 调节电路耦合在误差放大器电路的输出端和比较器电路的输入端之间，用于接收第一比较信号，调节电路被配置为将与输入接收的输入电压相关的电压补偿信号耦合到输出端 以便在输入电压变化时减小误差放大信号的变化量。

公开(公告)号：US09811101B2

公开(公告)日：2017-11-07

申请号：US14663165

申请日：2015-03-19

Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd

Inventor： Hai Bo Zhang ,  Zi Yu Zeng ,  Jerry Huang

IPC: H02M3/156 ,  H02M3/158 ,  G05F1/56 ,  H02M1/42 ,  H02M1/00

CPC classification number: G05F1/56 ,  H02M1/4225 ,  H02M3/156 ,  H02M3/158 ,  H02M2001/0022

Abstract: A power converter includes an input and an output with an energy storage circuit and a power switching circuit coupled between the input and the output. A feedback circuit generates a feedback voltage which is differentially compared to a reference in an error amplifier circuit to generate an error amplification signal. A comparator circuit generates a control signal for controlling on/off of the power switching circuit based on a first comparison signal related to the error amplification signal and a second comparison signal related to a charging current of the energy storage circuit. A regulating circuit is coupled between an output of the error amplifier circuit and an input of the comparator circuit for receiving the first comparison signal, the regulating circuit is configured to couple a voltage compensation signal related to an input voltage received by the input to an output of the error amplifier, so as to reduce a variation amount of the error amplification signal when the input voltage varies.