US 12,130,310 B2
Power module device and temperature detection method thereof
Wen-Shang Lai, Taoyuan (TW); and Fu-Yuan Shih, Taoyuan (TW)
Assigned to DELTA ELECTRONICS, INC., Taoyuan (TW)
Filed by DELTA ELECTRONICS, INC., Taoyuan (TW)
Filed on Jun. 12, 2022, as Appl. No. 17/806,498.
Claims priority of application No. 202111584834.8 (CN), filed on Dec. 22, 2021.
Prior Publication US 2023/0194576 A1, Jun. 22, 2023
Int. Cl. G01R 19/00 (2006.01); G01K 7/00 (2006.01); H03K 17/08 (2006.01); H03K 17/082 (2006.01)
CPC G01R 19/0084 (2013.01) [H03K 17/0822 (2013.01); G01K 7/00 (2013.01); H03K 17/08 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A power module device, comprising:
a main switch electrically connected between a first detection node and a second detection node, wherein the first detection node and the second detection node are electrically connected between a plurality of power supply nodes, and are substantially two ends of the main switch, when the main switch is turned on, the main switch is configured to transmit a current flowing through the plurality of power supply nodes;
a detection unit electrically connected to the first detection node and the second detection node, and configured to detect a voltage across the two ends of the main switch to generate a detection voltage; and
a conversion unit electrically connected to the detection unit, and configured to receive the detection voltage, wherein the conversion unit comprises a processor, the processor is configured to search a conversion table according to the detection voltage without the current to obtain a temperature value corresponding to the detection voltage as a detection temperature value.