公开(公告)号：US20110007434A1

公开(公告)日：2011-01-13

申请号：US12830863

申请日：2010-07-06

Applicant: Wei Han ,  Ching-Ji Liang ,  Chai-Lin Yu ,  Ju-Ya Luo

Inventor： Wei Han ,  Ching-Ji Liang ,  Chai-Lin Yu ,  Ju-Ya Luo

IPC: H02H9/02

CPC classification number: H02M1/32 ,  H02M1/36 ,  H02M3/156

Abstract: The invention discloses an over current protecting device and the method thereof. The over current protecting device is adapted to a DC-DC converter. A voltage output end of the DC-DC converter may generate an output current and transmit the output current to a load on a motherboard via a power copper layer on the motherboard. The over current protecting method includes the following steps: detecting a voltage drop on the power copper layer; controlling the DC-DC converter to operate normally when the voltage drop is smaller than a threshold value; and controlling the DC-DC converter to stop operating when the voltage drop is larger than the threshold value.

Abstract translation: 本发明公开了一种过电流保护装置及其方法。 过电流保护装置适用于DC-DC转换器。 DC-DC转换器的电压输出端可以产生输出电流，并通过主板上的电源铜层将输出电流传输到主板上的负载。 过流保护方法包括以下步骤：检测功率铜层上的电压降; 当所述电压降小于阈值时，控制所述DC-DC转换器正常工作; 以及当所述电压降大于所述阈值时，控制所述DC-DC转换器停止工作。