公开(公告)号：US20160149480A1

公开(公告)日：2016-05-26

申请号：US14887616

申请日：2015-10-20

Applicant: Power Forest Technology Corporation

Inventor： Ren-Huei TZENG ,  Kuan-Sheng WANG ,  Hsien-Yuan CHIANG

IPC: H02M1/32 ,  H02M3/335

CPC classification number: H02M1/32 ,  H02M3/33523

Abstract: A power supply with low voltage protection provides an output voltage. The power supply includes a driving switch and a control unit. The control unit generates a control signal with a duty cycle. The driving switch receives the control signal to drive the output voltage of the power supply. The control unit enables an under-voltage protection mode when the control unit detects that the output voltage is less than a threshold output voltage value and the duty cycle is less than a maximum duty cycle value. The control unit disables the under-voltage protection mode when the control unit detects that the output voltage is less than the threshold output voltage value and the duty cycle reaches to the maximum duty cycle value.

Abstract translation: 具有低电压保护功能的电源提供输出电压。 电源包括驱动开关和控制单元。 控制单元产生占空比的控制信号。 驱动开关接收控制信号以驱动电源的输出电压。 当控制单元检测到输出电压小于阈值输出电压值并且占空比小于最大占空比值时，控制单元启用欠压保护模式。 当控制单元检测到输出电压小于阈值输出电压值且占空比达到最大占空比值时，控制单元禁用欠压保护模式。