US 12,438,460 B1
Power management circuit capable of reducing power consumption of electronic devices
Wei-Lun Wang, Hsinchu County (TW)
Assigned to Novatek Microelectronics Corp., Hsinchu (TW)
Filed by Novatek Microelectronics Corp., Hsinchu (TW)
Filed on Aug. 7, 2024, as Appl. No. 18/797,486.
Int. Cl. H02M 3/156 (2006.01); G09G 5/00 (2006.01)
CPC H02M 3/156 (2013.01) [G09G 5/00 (2013.01); G09G 2330/021 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A power management circuit, comprising:
a control circuit, configured to output a control signal to control a power conversion operation of a power converter circuit; and
a blanking detecting circuit, coupled to the control circuit, and configured to receive a plurality of clock signals, detect a disable state of the clock signals, and turn off the control circuit when the disable state of the clock signals is detected,
wherein the control circuit comprises a ramp comparator and an error amplifier, and the blanking detecting circuit turns off the control circuit by disabling the ramp comparator and/or the error amplifier.