公开(公告)号：US09787185B2

公开(公告)日：2017-10-10

申请号：US14840347

申请日：2015-08-31

Applicant: STMicroelectronics S.r.l.

Inventor： Gioacchino Lo Iacono ,  Domenico Cristaudo ,  Daniele Battaglia

IPC: H02M3/158 ,  H02M3/156 ,  H02M1/00

CPC classification number: H02M3/158 ,  H02M3/156 ,  H02M2001/0025 ,  H02M2001/0035 ,  H02M2001/0048 ,  Y02B70/1491 ,  Y02B70/16

Abstract: A boost converter receives an input voltage and provides an output voltage and includes a power switch and a voltage control circuit configured to drive the power switch as a function of the output voltage. A voltage sensing circuit in the form of a voltage divider is coupled to sense the output voltage and provide a feedback voltage. The voltage control circuit drives the power switch. An electronic control switch is configured to selectively connect the voltage divider to sense the output voltage as a function of an enable signal generated by a timer circuit. The enable signal is pulsed such that the voltage divider is periodically connected to sense the output voltage during a first time and is disconnected from sensing during a second time.

公开(公告)号：US20160079857A1

公开(公告)日：2016-03-17

申请号：US14840347

申请日：2015-08-31

Applicant: STMicroelectronics S.r.l.

Inventor： Gioacchino Lo Iacono ,  Domenico Cristaudo ,  Daniele Battaglia

IPC: H02M3/158

CPC classification number: H02M3/158 ,  H02M3/156 ,  H02M2001/0025 ,  H02M2001/0035 ,  H02M2001/0048 ,  Y02B70/1491 ,  Y02B70/16

Abstract: A boost converter receives an input voltage and provides an output voltage and includes a power switch and a voltage control circuit configured to drive the power switch as a function of the output voltage. A voltage sensing circuit in the form of a voltage divider is coupled to sense the output voltage and provide a feedback voltage. The voltage control circuit drives the power switch. An electronic control switch is configured to selectively connect the voltage divider to sense the output voltage as a function of an enable signal generated by a timer circuit. The enable signal is pulsed such that the voltage divider is periodically connected to sense the output voltage during a first time and is disconnected from sensing during a second time.

Abstract translation: 升压转换器接收输入电压并提供输出电压，并且包括电源开关和电压控制电路，电压控制电路被配置成根据输出电压驱动电源开关。 耦合分压器形式的电压感测电路以感测输出电压并提供反馈电压。 电压控制电路驱动电源开关。 电子控制开关被配置为根据定时器电路产生的使能信号来选择性地连接分压器以感测输出电压。 使能信号是脉冲的，使得分压器周期性地连接以在第一时间期间感测输出电压，并且在第二时间内与感测断开连接。