DC-DC converter arrangement

摘要

ADC-DC converter, for a solar charger, is disclosed. The converter is based on a buck-boost converter, and is operable both in a boost mode, and in a buck mode. The converter differs from known converters, in that during buck mode operation, the boost mode is disabled, thereby reducing or eliminating the losses associated with buck mode operation. Methods of operating such a reconfigurable buck-boost converter are also disclosed as is a computer programme product for controlling a reconfigurable buck-boost converter.

主权项

1. A DC-DC converter, the DC-DC converter comprising
first and second input terminals and first and second output terminals, a buck-boost converter operable in a boost mode and in a buck mode and comprising a rectifying device and a first switch electrically coupled to the first input terminal and arranged for electrically coupling the first input terminal to the first output terminal via the rectifying device and further comprising an inductor electrically coupled between the second output terminal and a node between the first switch and the rectifying device, and a capacitor electrically coupled between the first and second output terminals, a second switch electrically coupled to the second input terminal and arranged for coupling the second input terminal to the second output terminal, and a switching device between the first output terminal and the second input terminal, wherein the first output terminal and the second input terminal are of the same polarity, wherein the second switch and the switching device are configured so as to be able to disable the boost mode.