Patent ID: 11953925
Assignee: NINGBO AURA SEMICONDUCTOR CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 13:
14. A system comprising:
a power terminal coupled to a power source; and
a power supply unit coupled to receive power from said power terminal, said power supply unit comprising a first linear voltage regulator coupled to receive said power and to generate a first lower supply voltage,
wherein said first linear voltage regulator comprises:
a pass transistor with a first current terminal coupled to receive said power, wherein a second current terminal of said pass transistor is coupled to an output node of said at least one linear voltage regulator and provides a regulated output voltage as said first lower supply voltage;

an error amplifier coupled to receive a reference voltage on a first input terminal and a feedback voltage derived from said regulated output voltage on a second input terminal, said error amplifier designed to generate an error signal representing a difference between said reference voltage and said feedback voltage;
a first driver stage coupled between said error amplifier and said pass transistor, a first transistor of said first driver stage having a control terminal coupled to receive said error signal, wherein a control terminal of said pass transistor is coupled to receive an output of said first driver stage;
a compensation circuit for frequency compensation of said linear voltage regulator; and
a compensation adjustment circuit to sense a magnitude of current through said first transistor of said first driver stage, and to adjust a parameter of said compensation circuit based on said magnitude of current, said system further comprising:
an antenna;
a first duplexer coupled to said antenna; and
a first transceiver, wherein said first lower supply voltage is used to power a noise-sensitive block in said first transceiver,
said first transceiver comprising a transmitter portion and a receiver portion each coupled to said first duplexer, said first transceiver to transmit communication signals to a wireless medium via said first duplexer and said antenna, said first transceiver to also receive communication signals from said wireless medium via said first duplexer and said antenna.