US 12,328,072 B2
Power converter with adaptively adjustable voltages based on detected currents
Chun-Kai Hsu, Hsinchu (TW); and Chih-Heng Su, Hsinchu (TW)
Assigned to ANPEC ELECTRONICS CORPORATION, Hsinchu (TW)
Filed by ANPEC ELECTRONICS CORPORATION, Hsinchu (TW)
Filed on Apr. 21, 2023, as Appl. No. 18/304,354.
Claims priority of application No. 112105659 (TW), filed on Feb. 17, 2023.
Prior Publication US 2024/0283361 A1, Aug. 22, 2024
Int. Cl. H02M 3/158 (2006.01); H02M 1/00 (2006.01); H05B 45/375 (2020.01)
CPC H02M 3/158 (2013.01) [H02M 1/0009 (2021.05); H02M 1/0025 (2021.05); H05B 45/375 (2020.01)] 14 Claims
OG exemplary drawing
 
1. A power converter with adaptively adjustable voltages based on detected currents, comprising:
a high-side switch, a first terminal of the high-side switch being coupled to an input voltage;
a low-side switch, wherein a first terminal of the low-side switch is connected to a second terminal of the high-side switch, a second terminal of the low-side switch is grounded, and a node between the first terminal of the low-side switch and the second terminal of the high-side switch is connected to a first terminal of an inductor;
a controller circuit connected to a control terminal of the high-side switch and a control terminal of the low-side switch;
a plurality of switch components, wherein a first terminal of each of the plurality of switch components is connected to a second terminal of the inductor, second terminals of the plurality of switch components are connected to first terminals of a plurality of electronic components respectively, and a second terminal of each of the plurality of electronic components is grounded;
a current detector circuit connected to the second terminal of each of the plurality of switch components, and configured to detect, for multiple times, a value of a current flowing through each of the plurality of switch components; and
a counter connected to the current detector circuit and the controller circuit, and configured to count down a preset maximum reference voltage to decrease the preset maximum reference voltage to form a reference voltage;
wherein, each time when the current detector circuit determines that the value of the current flowing through each of the plurality of switch components is a normal current value, the counter counts down the reference voltage to decrease the reference voltage and outputs the reference voltage that is decreased to the controller circuit;
wherein, when the controller circuit controls the high-side switch and the low-side switch to operate according to the reference voltage such that the value of the current flowing through any one of the plurality of switch components is an abnormal current value, the counter counts up the reference voltage to increase the reference voltage and outputs the reference voltage that is increased to the controller circuit;
wherein the controller circuit controls the high-side switch and the low-side switch to operate according to the reference voltage received each time from the counter.