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 |
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.
|