US 12,438,434 B2
Voltage converter and adjustment method capable of adjusting zero-crossing reference current
Hung-Yuan Chu, Hsinchu County (TW); and Chen-Wei Yeh, Hsinchu County (TW)
Assigned to PowerX Semiconductor Corporation, Hsinchu County (TW)
Filed by PowerX Semiconductor Corporation, Hsinchu County (TW)
Filed on Aug. 17, 2023, as Appl. No. 18/451,831.
Claims priority of application No. 112109410 (TW), filed on Mar. 14, 2023.
Prior Publication US 2024/0313633 A1, Sep. 19, 2024
Int. Cl. H02M 1/00 (2007.01); H02M 1/08 (2006.01); H02M 3/155 (2006.01); H02M 3/156 (2006.01); H02M 3/158 (2006.01)
CPC H02M 1/0025 (2021.05) [H02M 1/0009 (2021.05); H02M 1/083 (2013.01); H02M 3/155 (2013.01); H02M 3/156 (2013.01); H02M 3/158 (2013.01); H02M 3/1588 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A voltage converter capable of adjusting a zero-crossing reference current, comprising:
a first power switch and a second power switch coupled in series to generate an inductor current;
a current sensor circuit coupled to the second power switch to sense a current flowing through the second power switch, and generate a sensing current;
a zero-crossing reference current source configured to output a zero-crossing reference current; and
an adjustment circuit coupled to the current sensor circuit and the zero-crossing reference current source to receive the sensing current and the zero-crossing reference current so as to control the second power switch and adjust the zero-crossing reference current according to the sensing current and the zero-crossing reference current.