US 12,149,169 B2
Power converter having multi-slope compensation mechanism
Cheng-Han Wu, Hsinchu (TW); and Fu-Chuan Chen, Hsinchu (TW)
Assigned to ANPEC ELECTRONICS CORPORATION, Hsinchu (TW)
Filed by ANPEC ELECTRONICS CORPORATION, Hsinchu (TW)
Filed on Oct. 20, 2022, as Appl. No. 17/969,809.
Claims priority of application No. 111132175 (TW), filed on Aug. 26, 2022.
Prior Publication US 2024/0072660 A1, Feb. 29, 2024
Int. Cl. H02M 3/156 (2006.01); H02M 3/158 (2006.01)
CPC H02M 3/1566 (2021.05) [H02M 3/158 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A power converter having a multi-slope compensation mechanism, comprising:
a high-side switch, wherein a first terminal of the high-side switch is 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, 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 second terminal of the inductor is connected to a first terminal of an output capacitor, and a second terminal of the output capacitor is grounded;
a multi-slope compensation circuit, including:
a plurality of first capacitors each having a first terminal and a second terminal;
a comparator, wherein a plurality of first input terminals of the comparator are respectively connected to the second terminals of the plurality of first capacitors, and a second input terminal of the comparator is coupled to a first reference voltage;
a plurality of first resistors, wherein first terminals of the plurality of first resistors are respectively connected to the plurality of first input terminals of the comparator, the first terminals of the plurality of first resistors are respectively connected to the second terminals of the plurality of first capacitors, and a second terminal of each of the plurality of first resistors is coupled to a second reference voltage; and
a second resistor, wherein a first terminal of the second resistor is connected to the first terminal of the inductor, and a second terminal of the second resistor is connected to the first terminal of each of the plurality of first resistors; and
a driver circuit, wherein an input terminal of the driver circuit is connected to an output terminal of the comparator, and an output terminal of the driver circuit is connected to a control terminal of the high-side switch and a control terminal of the low-side switch.