US 11,888,469 B2
Power device and electrical appliance
Yuxiang Feng, Guangdong (CN)
Assigned to GD MIDEA AIR-CONDITIONING EQUIPMENT CO., LTD., Guangdong (CN); and MIDEA GROUP CO., LTD., Guangdong (CN)
Filed by GD MIDEA AIR-CONDITIONING EQUIPMENT CO., LTD., Guangdong (CN); and MIDEA GROUP CO., LTD., Guangdong (CN)
Filed on Sep. 15, 2021, as Appl. No. 17/475,620.
Application 17/475,620 is a continuation of application No. PCT/CN2019/110973, filed on Oct. 14, 2019.
Claims priority of application No. 201910208662.0 (CN), filed on Mar. 19, 2019.
Prior Publication US 2022/0006454 A1, Jan. 6, 2022
Int. Cl. H03K 17/687 (2006.01); H02M 1/088 (2006.01); H02M 3/158 (2006.01); H02M 7/00 (2006.01); H02M 7/5387 (2007.01); H03K 17/693 (2006.01)
CPC H03K 17/6871 (2013.01) [H02M 1/088 (2013.01); H02M 3/158 (2013.01); H02M 7/003 (2013.01); H02M 7/53871 (2013.01); H03K 17/693 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A power device comprising:
a control input terminal;
an upper bridge arm switch tube and a lower bridge arm switch tube;
an upper resistor group and a lower resistor group;
a first driving circuit, connected to the control input terminal and the upper bridge arm switch tube through the upper resistor group; and
a second driving circuit, connected to the control input terminal and the lower bridge arm switch tube through the lower resistor group,
wherein:
the control input terminal is connectable to a high level or a low level,
when the control input terminal is connected to the high level, the first driving circuit and the second driving circuit output a high/low level signal in a first voltage range,
when the control input terminal is connected to the low level, the first driving circuit and the second driving circuit output a high/low level signal in a second voltage range, and
the first voltage range is different from the second voltage range, and
wherein:
when the upper bridge arm switch tube and the lower bridge arm switch tube each comprise a GaN device, a high level is input to the control input terminal, and
when the upper bridge arm switch tube and the lower bridge arm switch tube each comprise a Si device, a low level is input to the control input terminal.