US 11,930,573 B2
Power supply device
Rong-Jie Tu, Hsinchu County (TW); Hung-Chih Chiu, Taipei (TW); and Chien-Lung Lee, Hsinchu County (TW)
Assigned to Power Forest Technology Corporation, Hsinchu County (TW)
Filed by Power Forest Technology Corporation, Hsinchu County (TW)
Filed on Oct. 5, 2022, as Appl. No. 17/960,140.
Claims priority of application No. 110149269 (TW), filed on Dec. 29, 2021.
Prior Publication US 2023/0209678 A1, Jun. 29, 2023
Int. Cl. H02M 1/00 (2006.01); H02J 3/00 (2006.01); H02J 3/14 (2006.01); H05B 45/3725 (2020.01)
CPC H05B 45/3725 (2020.01) [H02J 3/0075 (2020.01); H02J 3/14 (2013.01); H02M 1/0009 (2021.05); H02M 1/0083 (2021.05)] 11 Claims
OG exemplary drawing
 
1. A power supply device, comprising:
a power converter;
a blocking switch, wherein a first terminal of the blocking switch is coupled to an output terminal of the power converter, and a second terminal of the blocking switch is coupled to a load; and
a controller coupled to the power converter and the blocking switch, and configured to control the power converter to provide an output power, wherein the controller comprises:
a first detection circuit configured to detect the output power to obtain a first detection result, wherein the first detection result is a variation of an output current value of the output power; and
a second detection circuit configured to detect electrical characteristics of at least one of the power converter and the blocking switch to obtain a second detection result, wherein the electrical characteristics are different from the output current value,
wherein the controller determines whether to limit output of the output power according to a relationship between the first detection result and the second detection result.