US 12,424,921 B2
Power supply controller circuit for effectively saving power under electrical specification
Fu-Chuan Chen, Hsinchu (TW)
Assigned to ANPEC ELECTRONICS CORPORATION, Hsinchu (TW)
Filed by ANPEC ELECTRONICS CORPORATION, Hsinchu (TW)
Filed on Nov. 23, 2023, as Appl. No. 18/518,453.
Claims priority of application No. 112135209 (TW), filed on Sep. 15, 2023.
Prior Publication US 2025/0096666 A1, Mar. 20, 2025
Int. Cl. H02M 1/00 (2007.01); H02M 1/32 (2007.01)
CPC H02M 1/0032 (2021.05) [H02M 1/0006 (2021.05); H02M 1/32 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A power supply controller circuit for effectively saving power under an electrical specification, comprising:
a capacitor, wherein a first terminal of the capacitor is connected to a first terminal of a power supply device and a first terminal of a load, and a second terminal of the capacitor is connected to a second terminal of the load;
a first switch component, wherein a first terminal of the first switch component is connected to the second terminal of the capacitor, and a second terminal of the first switch component is connected to a second terminal of the power supply device;
a second switch component, wherein a first terminal of the second switch component is connected to the second terminal of the capacitor, and a second terminal of the second switch component is connected to the second terminal of the power supply device;
a third switch component, wherein a first terminal of the third switch component is connected to the first terminal of the power supply device;
a fourth switch component, wherein a first terminal of the fourth switch component is connected to a second terminal of the third switch component, and a second terminal of the fourth switch component is connected to the second terminal of the power supply device;
a driver circuit connected to a control terminal of the fourth switch component;
a detector circuit connected to the second terminal of the capacitor; and
a control circuit connected to a control terminal of the first switch component, a control terminal of the second switch component, a control terminal of the third switch component and the detector circuit;
wherein the driver circuit drives the fourth switch component, and the control circuit controls operations of the first switch component, the second switch component and the third switch component according to a voltage of the second terminal of the capacitor that is detected by the detector circuit, such that a current flowing back to the second terminal of the power supply device is not smaller than a current threshold specified in the electrical specification within specified time and power consumption of the power supply device is reduced.