US 11,682,965 B2
Power supply with lightning protection
Yung-Hung Hsiao, New Taipei (TW); Chia-Hsien Yen, New Taipei (TW); Cheng-Chang Hsiao, New Taipei (TW); Che-Han Li, New Taipei (TW); and Yu-Xian Zeng, New Taipei (TW)
Assigned to CHICONY POWER TECHNOLOGY CO., LTD, New Taipei (TW)
Filed by Chicony Power Technology Co., Ltd., New Taipei (TW)
Filed on Aug. 13, 2021, as Appl. No. 17/402,164.
Claims priority of application No. 110122562 (TW), filed on Jun. 21, 2021.
Prior Publication US 2022/0407309 A1, Dec. 22, 2022
Int. Cl. H02M 1/32 (2007.01); H02H 9/04 (2006.01); H02H 7/125 (2006.01); H02M 7/219 (2006.01); H02M 1/42 (2007.01); H02H 3/22 (2006.01)
CPC H02M 1/32 (2013.01) [H02H 7/125 (2013.01); H02H 9/04 (2013.01); H02M 7/219 (2013.01); H02H 3/22 (2013.01); H02M 1/4225 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A power supply with lightning protection, comprising:
a surge voltage suppression apparatus, configured to increase a tolerance of a surge voltage for the power supply,
an electromagnetic interference control circuit, coupled to the surge voltage suppression apparatus,
a surge current bypass apparatus, coupled to the electromagnetic interference control circuit and configured to increase a tolerance of a surge current for the power supply,
an active bridge rectifier circuit, coupled to the surge current bypass apparatus and configured to rectify an input voltage,
a power factor correction circuit, coupled to the active bridge rectifier circuit and configured to adjust the rectified input voltage to provide an adjusted input voltage on a bulk capacitor,
a DC-to-DC conversion circuit, coupled to the power factor correction circuit and configured to convert the adjusted input voltage into a DC output voltage, and
a control circuit, coupled to the surge voltage suppression apparatus, and the control circuit comprising:
a current sensing circuit, configured to receive an input current to generate a current notification signal,
a driver circuit, coupled to the current sensing circuit and the active bridge rectifier circuit and configured to receive the current notification signal, and
a digital signal processor, coupled to the current sensing circuit and the driver circuit and configured to receive the current notification signal,
wherein the control circuit enables or disables the active bridge rectifier circuit according to the input current.