公开(公告)号：US09325238B2

公开(公告)日：2016-04-26

申请号：US14334717

申请日：2014-07-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Pinhua Zhu ,  Hengbiao Wang ,  Wenzong Cao

IPC: H02M3/335 ,  H02M3/156 ,  H02M3/158 ,  H02M1/00

CPC classification number: H02M3/156 ,  H02M3/1582 ,  H02M3/1584 ,  H02M2001/007

Abstract: A voltage adjustment method, and a voltage pre-regulator power supply circuit and system, that implements highly-efficient output of a power supply in a quasi straight-through state and increases voltage output precision of a circuit. The voltage adjustment method includes receiving a to-be-adjusted voltage through a positive wire input end and a negative wire input end; changing, in a control mode in which a connection time is fixed and a disconnection time is adjusted, a duty cycle for the to-be-adjusted voltage to obtain a primary adjusted voltage; and changing, in a control mode in which a disconnection time is fixed and a connection time is adjusted, a duty cycle for the primary adjusted voltage to obtain an output voltage. The present disclosure is applied to a non-isolated direct-current quasi straight-through pre-regulator power supply.

Abstract translation: 电压调节方法和电压预调节器电源电路和系统，其实现准直通状态的电源的高效输出并且提高电路的电压输出精度。 电压调整方法包括通过正极线路输入端和负极线路输入端接收待调整电压; 在其中连接时间固定并且断开时间被调整的控制模式中，改变待调整电压的占空比以获得初级调节电压; 并且在其中断开时间固定并且连接时间被调整的控制模式中改变一次调节电压的占空比以获得输出电压。 本公开适用于非隔离直流准直通预调节器电源。

公开(公告)号：US20140327417A1

公开(公告)日：2014-11-06

申请号：US14334717

申请日：2014-07-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Pinhua Zhu ,  Hengbiao Wang ,  Wenzong Cao

IPC: H02M3/156

CPC classification number: H02M3/156 ,  H02M3/1582 ,  H02M3/1584 ,  H02M2001/007

Abstract: A voltage adjustment method, and a voltage pre-regulator power supply circuit and system, that implements highly-efficient output of a power supply in a quasi straight-through state and increases voltage output precision of a circuit. The voltage adjustment method includes receiving a to-be-adjusted voltage through a positive wire input end and a negative wire input end; changing, in a control mode in which a connection time is fixed and a disconnection time is adjusted, a duty cycle for the to-be-adjusted voltage to obtain a primary adjusted voltage; and changing, in a control mode in which a disconnection time is fixed and a connection time is adjusted, a duty cycle for the primary adjusted voltage to obtain an output voltage. The present disclosure is applied to a non-isolated direct-current quasi straight-through pre-regulator power supply.

Abstract translation: 电压调节方法和电压预调节器电源电路和系统，其实现准直通状态的电源的高效输出并且提高电路的电压输出精度。 电压调整方法包括通过正极线路输入端和负极线路输入端接收待调整电压; 在其中连接时间固定并且断开时间被调整的控制模式中，改变待调整电压的占空比以获得初级调节电压; 并且在其中断开时间固定并且连接时间被调整的控制模式中改变一次调节电压的占空比以获得输出电压。 本公开适用于非隔离直流准直通预调节器电源。