US 2026/0180427 A1 · DRIVING CIRCUIT FOR A SWITCHING CIRCUIT

Abstract

A driving circuit is provided for switching a switching circuit which has a high-side switch circuit and a low-side switch circuit and a phase node between the high-side switch circuit and the low-side switch circuit. The driving circuit has: a driving voltage regulator with a driving node which provides a driving voltage; a high-side driver which has a supply node configured to be coupled to a bootstrap node of a bootstrap capacitance and to control a switching of the high-side switch circuit; and a low-side driver which has a supply node coupled to the driving node and configured to control a switching of the low-side switch circuit. Furthermore, the driving circuit has a circuitry configured to regulate the coupling between the driving node of the driving voltage regulator and the supply node of the high-side driver.

Claims20

Dependent claims

A driving circuit for switching a switching circuit, the driving circuit comprising:

a driving voltage regulator having a driving node and configured to provide a driving voltage to the driving node;
a high-side driver having a first supply node couplable to a bootstrap node of a bootstrap capacitance and configured to control switching of a high-side switch circuit of the switching circuit;
a low-side driver having a second supply node coupled to the driving node and configured to control switching of a low-side switch circuit of the switching circuit, wherein a phase node is arranged between the high-side switch circuit and the low-side switch circuit;
and
regulating circuitry configured to regulate coupling between the driving node and the first supply node.

2 more elements

An electronic device, comprising:

a switching circuit including a high-side switch circuit, a low-side switch circuit, and a phase node arranged between the high-side switch circuit and the low-side switch circuit;
a bootstrap capacitance coupled between a bootstrap node and the phase node;
and
a driving circuit configured to switch the switching circuit, the driving circuit comprising:
a driving voltage regulator having a driving node and configured to provide a driving voltage to the driving node,
a high-side driver having a first supply node configured to be coupled to the bootstrap node and configured to control switching of the high-side switch circuit,
a low-side driver having a second supply node coupled to the driving node of the driving voltage regulator and configured to control switching of the low-side switch circuit, and
regulating circuitry configured to regulate coupling between the driving node and the first supply node.

5 more elements

Dependencies are inferred from the claim text.

Driving circuit for a switching circuit

Life of this patent

Driving circuit for a switching circuit

Life of this patent

Abstract

Claims20