US 12,149,160 B2
Converter having multi-stage high-side driving mechanism
Kun-Min Chen, Hsinchu (TW); and Ke-Tsung Chen, Hsinchu (TW)
Assigned to ANPEC ELECTRONICS CORPORATION, Hsinchu (TW)
Filed by ANPEC ELECTRONICS CORPORATION, Hsinchu (TW)
Filed on Oct. 19, 2022, as Appl. No. 17/968,803.
Claims priority of application No. 111132396 (TW), filed on Aug. 29, 2022.
Prior Publication US 2024/0072654 A1, Feb. 29, 2024
Int. Cl. H02M 1/08 (2006.01); H02M 1/00 (2006.01); H02M 3/07 (2006.01); H02M 3/158 (2006.01)
CPC H02M 1/08 (2013.01) [H02M 1/0006 (2021.05); H02M 1/0029 (2021.05); H02M 3/07 (2013.01); H02M 3/158 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A power converter having a multi-stage high-side driving mechanism, comprising:
a high-side switch, wherein a first terminal of the high-side switch is connected to an input power source and configured to receive a first input voltage signal from the input power source;
a low-side switch, wherein a first terminal of the low-side switch is connected to a second terminal of the high-side switch, and a second terminal of the low-side switch is grounded;
a charge pump configured to output a charging signal;
a control circuit configured to output a first high-side control signal, a second high-side control signal and a low-side control signal;
a low-side driving circuit connected to a control terminal of the low-side switch and the control circuit, and configured to output a low-side driving signal to the control terminal of the low-side switch according to the low-side control signal; and
a high-side driving circuit connected to a control terminal of the high-side switch, the charge pump and the control circuit;
wherein the high-side driving circuit, according to the first high-side control signal, outputs a first stage high-side driving signal to the control terminal of the high-side switch to pull up a voltage of the control terminal of the high-side switch to a first stage voltage;
wherein, after the voltage of the control terminal of the high-side switch is pulled up to the first stage voltage, the high-side driving circuit, according to the second high-side control signal and the charging signal, outputs a second stage high-side driving signal to the control terminal of the high-side switch to pull up the voltage of the control terminal of the high-side switch from the first stage voltage to a target voltage;
wherein the first stage voltage is equal to a voltage of the first input voltage signal.