摘  要：详细分析了buck电流全桥变换器的工作原理及其与buck电压型全桥变换器的不同点，阐述了全桥功率管开关电流和电压变化情况。拓扑全桥变换器的晶体管由于零电压关断而没有关断损耗，而且与变压器漏感串联零压导通，所以导通损耗也很小。设计了buck电流型全桥主电路、buck开关管吸收电路、PWM控制电路、隔离电路等。通过实验验证全桥变换器很适合大功率、高电压输出的场合，具有一定适用性和可靠性。
关键词： Buck电流；全桥变换器；实验；电机控制

Abstract: Driving technology is critical for developing a micro-robot.This paper described the latest development output of micro-robot driving technology.Summarized the principles of various driving technology and energy supplying methods,pointed out the problems of nowadays driving technology.At last,the future prospects of micro-robot driving technology are viewed.
Key Words: Micro-robot;Driving technology;Development