Patent ID: 11914412
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Control (Instruments)
Classification: CPC G  H | IPC G  H

Claim 12:
13. A method comprising:
providing a first reference current to a first resistor in a first stage;
providing a second reference current to a second resistor in a second stage, in which the second resistor is coupled between a base of a first bipolar transistor in the first stage and a base of a second bipolar transistor in the second stage, and a voltage across the second resistor is a second reference voltage;
providing a third reference current to a third resistor in the first stage;
providing a fourth reference current to a fourth resistor in the second stage;
drawing an averaged current in a diode-connected PFET based on the first, second, third and fourth reference currents, in which the diode-connected PFET is coupled between a power input terminal and the first stage and the second stage; and
mirroring the averaged current in a bandgap resistor to generate a bandgap voltage.