Systems for controlling high frequency voltage mode switching regulators

摘要

A circuit for controlling a switching regulator is provided. The circuit includes a first input to receive a feedback signal from the switching regulator proportional to an output voltage of the switching regulator, a second input to receive a voltage reference signal, an output to be coupled to an input of the switching regulator, an error amplifier having a first input terminal coupled to the first input to receive the feedback signal, a second input terminal coupled to the second input to receive the voltage reference signal, and an output terminal coupled to the output, and a compensation network coupled between the second input and the output. The compensation network includes a series combination of a first capacitance and a first resistance coupled between the second input and a node, a second resistance coupled between the node and the output, and a second capacitance coupled to the node.

主权项

1. A circuit for controlling a switching regulator, the circuit comprising:
a first input to receive a feedback signal from the switching regulator proportional to an output voltage of the switching regulator; a second input to receive a voltage reference signal; an output to be coupled to an input of the switching regulator; an error amplifier having a first input terminal coupled to the first input to receive the feedback signal, a second input terminal coupled to the second input to receive the voltage reference signal, and an output terminal coupled to the output; and a compensation network coupled to the second input terminal of the error amplifier and the output terminal of the error amplifier, the compensation network including a series combination of a first capacitance and a first resistance coupled between the second input terminal of the error amplifier and a node, a second resistance coupled between the node and the output terminal of the error amplifier, and a second capacitance coupled between the node and ground.