公开(公告)号：US20230134013A1

公开(公告)日：2023-05-04

申请号：US17938055

申请日：2022-10-05

Applicant: CHROMA ATE INC.

Inventor： Cheng Chung LEE ,  Szu Chieh SU ,  Wen Chih CHEN ,  Chih Hsing LIN ,  Jhen Wei GONG

IPC: H02M5/44 ,  H02M1/00

Abstract: Systems and methods for switching between a power supply mode and an electronic load mode are disclosed. For switching from the power supply mode to the electronic load mode, the method comprises the steps of: deactivating a power element; activating a current control module and a phase-locked loop to obtain a voltage phase of a device under test; calculating a turn-on amount of the power element according to a current setting value and the voltage phase; and causing the power element to generate a load current for the device under test. For switching from the electronic load mode to the power supply mode, the method comprises the steps of: deactivating the power element; activating a voltage control module; calculating the turn-on amount of the power element according to a voltage setting value; and causing the power element to input a corresponding voltage to the device under test.

公开(公告)号：US20230155497A1

公开(公告)日：2023-05-18

申请号：US18050060

申请日：2022-10-27

Applicant: CHROMA ATE INC.

Inventor： Chen Yuan WU ,  Chih Hsien WANG ,  Kuo Cheng WANG ,  Cheng Chung LEE

IPC: H02M3/139 ,  H02M3/158 ,  H02M3/157 ,  H02M1/00

CPC classification number: H02M3/139 ,  H02M1/0025 ,  H02M3/157 ,  H02M3/1582

Abstract: The present invention relates to an AC/DC power conversion module and a method of driving the same. When an AC/DC converter is electrically coupled to an external power source, a microprocessor is electrically energized by a buck auxiliary circuit, under control of the microprocessor, a DC/DC converter is activated for a certain time period, and then, the AC/DC converter is activated. Thereafter, an output voltage of the AC/DC converter is boosted, and an output voltage of the DC/DC converter is boosted accordingly. Power elements in the downstream side DC/DC converter are activated first, and then power elements in the upstream side AC/DC converter are activated, thereby an inrush current is suppressed. Once the external power source is connected, the buck auxiliary circuit will automatically reduce a voltage of the power input to activate the module. It realizes that the module will autonomously operate after being electrically energized.