Power supply apparatus

摘要

A power supply apparatus mainly includes a secondary side controller, a digital isolator, a plurality of isolation sensing units, and a driving unit. The secondary side controller is configured to isolatedly measure voltages and currents, and is configured to isolatedly control the driving unit. The power supply apparatus includes a controller only, i.e. the secondary side controller 114. Therefore, the power consumption is lower, and the cost is lower. Only one controller is required to update software. There is no communication delay problem between two controllers.

主权项

1. A power supply apparatus applied to an alternating current power supply apparatus and a load apparatus, the power supply apparatus including
a first connection point electrically connected to the alternating current power supply apparatus; a second connection point electrically connected to the alternating current power supply apparatus; a third connection point; a fourth connection point electrically connected to the load apparatus; a current sensing unit; a fifth connection point electrically connected to the load apparatus; a secondary side controller electrically connected to the current sensing unit; a digital isolator electrically connected to the secondary side controller; a first isolation sensing unit electrically connected to the digital isolator, the secondary side controller, and the first connection point; a second isolation sensing unit electrically connected to the digital isolator, the secondary side controller, and the second connection point; a third isolation sensing unit electrically connected to the digital isolator, the secondary side controller, and the third connection point; a fourth isolation sensing unit electrically connected to the digital isolator, the secondary side controller, and the fourth connection point; a driving unit electrically connected to the digital isolator; a first capacitor electrically connected to the first connection point and the second connection point; a bridge rectifier electrically connected to the first connection point, the second connection point, the third connection point, and the fifth connection point; a second capacitor electrically connected to the third connection point and the fifth connection point; an inductor electrically connected to the third connection point and the current sensing unit; and a switch unit electrically connected to the current sensing unit, the fifth connection point, and the driving unit.