Patent ID: 11900858
Assignee: LX SEMICON CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A power management integrated circuit comprising:
a multiplexer configured to receive a display voltage or a touch voltage transferred by a host, select one of the display voltage and the touch voltage, and output a multiplexer output voltage;
a buck circuit configured to receive the multiplexer output voltage, reduce a signal level of the multiplexer output voltage, and generate a driving voltage of a timing controller; and
a voltage modulation circuit configured to receive the multiplexer output voltage and generating a gate high voltage, a gate low voltage, a common voltage, and a touch/display driving voltage,
wherein the voltage modulation circuit is configured to modulate and output a waveform of at least one of the gate high voltage, the gate low voltage, the common voltage, and the touch/display driving voltage,
wherein the multiplexer is configured to receive the display voltage as an enable signal to determine an output timing of the multiplexer output voltage.