Patent ID: 11888469
Assignee: GD MIDEA AIR-CONDITIONING EQUIPMENT CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 5:
6. The power device according to claim 5, wherein the first phase upper driving circuit, the second phase upper driving circuit or the third phase upper driving circuit comprises:
a first input sub-circuit, connected to the control input terminal and comprising a first output terminal, a second output terminal and a third output terminal,
wherein:
when the control input terminal is connected to the low level, the first output terminal and the second output terminal output trigger pulses, and
when the control input terminal is connected to the high level, the first output terminal, the second output terminal and the third output terminal output trigger pulses;

a first switch tube, a second switch tube and a third switch tube,
wherein:
the first switch tube is connected to the first output terminal, when the first output terminal outputs a trigger pulse, the first switch tube is turned on,
the second switch tube is connected to the second output terminal, when the second output terminal outputs a trigger pulse, the second switch tube is turned on, and
the third switch tube is connected to the third output terminal, when the third output terminal outputs a trigger pulse, the third switch tube is turned on; and

a first voltage output sub-circuit, connected to each of the first switch tube, the second switch tube and the third switch tube,
wherein:
the first voltage output sub-circuit outputs the high/low level signal in the second voltage range when the third switch tube is not turned on, and
the first voltage output sub-circuit outputs the high/low level signal in the first voltage range when the third switch tube is turned on.