Patent ID: 11863073
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 12:
13. An inverting buck-boost converter, comprising:
a high-side transistor;
a low-side transistor;
a controller coupled to an output terminal, the high-side transistor, and the low-side transistor, wherein the controller includes:
a reference voltage source providing a reference voltage;
an error amplifier coupled to the output terminal and the reference voltage source, and configured to provide an error signal proportional to a difference between a voltage at the output terminal and the reference voltage; and
a compensation circuit coupled to the error amplifier, the compensation circuit:
a first resistor coupled to the error amplifier;
a capacitor coupled to the first resistor;
a first switch coupled between the first resistor and the capacitor;
a second resistor coupled to the error amplifier; and
a second switch coupled between the second resistor and the capacitor; and

a switch control circuit configured to control the first switch and the second switch responsive to a switching frequency of the high-side transistor and the low-side transistor.