Non-isolated AC-DC converter having a positive output buck-boost converter and PFC at input supply

摘要

A power converter includes a battery (104) having a positive terminal and a negative terminal, a first power input (112, 114) to receive AC input power, a second power input to receive DC input power from the battery, a first power output to charge the battery, a second power output to provide power to a load, a rectifier circuit (210) coupled to the first power input (112, 114), and a non-isolated single-stage power conversion circuit (200) having an input and configured as a buckboost converter. The power at the second power output is derived from the first power input and/or the second power input. The single-stage power conversion circuit is configured to convert an AC voltage to a DC voltage using a common energy storage element (228), and is coupled to the first power output and the rectifier circuit (210).