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1. (WO2018018438) POWER MODULES HAVING CURRENT SENSING CIRCUITS

Pub. No.:    WO/2018/018438    International Application No.:    PCT/CN2016/091809
Publication Date: Fri Feb 02 00:59:59 CET 2018 International Filing Date: Wed Jul 27 01:59:59 CEST 2016
IPC: G01R 19/00
H02J 1/00
Applicants: ASTEC INTERNATIONAL LIMITED
Inventors: XIANG, Maoxi
LV, Jianfeng
ZHENG, Chenchen
FENG, Qian
Title: POWER MODULES HAVING CURRENT SENSING CIRCUITS
Abstract:
Power modules having current sensing circuits, and corresponding sensing methods, are disclosed. Power modules (100) include a printed circuit board (PCB) having a PCB trace (106), an output choke inductor (108), and an output pin (110). The power module also includes a first sense terminal (102) coupled to the PCB trace, a second sense terminal (104) coupled to the output pin such that a resistance between the first sense terminal and the second sense terminal is defined by the resistance of the PCB trace and the resistance of the output pin, and a control (112) coupled to the first sense terminal and the second sense terminal. The control is adapted to measure a voltage between the sense terminals, and to determine a current through the PCB trace and the output pin based on the measured voltage and the resistance between the sense terminals.