Title :
A Hot-Swap Solution for Paralleled Power Modules by Using Current-Sharing Interface Circuits
Author :
Chen, Yi ; Cheng, David Ki-Wai ; Lee, Yim-Shu
Author_Institution :
Dept. of Electron. & Inf. Eng., Hong Kong Polytech. Univ., Kowloon
Abstract :
A hot swap of power modules is required by high-availability parallel power module systems. With the hot-swappable paralleled power modules, the system up-time can be maximized, the system maintenance and repair can be simplified, and the system upgrade can be allowed for. In this paper, a simple hot-swap solution is proposed for the paralleled power modules which use current-sharing (CS) interface circuits to do the CS work. By redesigning the basic function circuits of the CS interface circuits (such as the under voltage protection circuit, the current-sharing circuit, and the light load protection circuit etc.), an additional hot-swap function can be implemented "parasitically". There is no extra hot-swap controller and no compatibility problem between the hot-swap and CS solutions used. A prototype CS interface circuit with a "parasitic" hot-swap function was designed, implemented, and tested. The results show that the proposed hot-swap solution is feasible and suitable
Keywords :
power MOSFET; current-sharing interface circuits; hot-swap solution; light load protection circuit; paralleled power modules; repair; system maintenance; under voltage protection circuit; Cables; Circuit testing; Integrated circuit reliability; Lighting control; MOSFETs; Multichip modules; Power system protection; Prototypes; Switches; Voltage control; Current-sharing (CS) interface circuit; hot swap; paralleled power module;
Journal_Title :
Power Electronics, IEEE Transactions on
DOI :
10.1109/TPEL.2006.882971