Patent ID: 11929663
Assignee: RENESAS ELECTRONICS AMERICA INC.
Field: Computer technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. An apparatus comprising:
a power management integrated circuit comprising:
a voltage regulator supplied by a first power source and configured to generate a first output;
a charge pump supplied by a second power source and configured to generate a second output, a bias voltage output of the power management integrated circuit being generated based at least in part on the first output and the second output, the charge pump being configured to adjust the second output based at least in part on a comparison between the bias voltage output and a reference voltage; and
a self-biased switch disposed between the output of the charge pump and the output of the voltage regulator, the self-biased switch being configured to switch between outputting the second output and having a high output impedance.