Patent · US Active

Auxiliary supply for a switched-mode power supply controller using bang-bang regulation

US9590507B1 · kind B1 · utility

1Cited by

5References

23Claims

0Family size

Assignee

Infineon Technologies Austria AG · AT

Inventors

Michael Herfurth · Gilching, DE
Rolf Weis · Dresden, DE
Wolfgang Granig · Seeboden, AT

Key dates

Filing date	Dec 18, 2015
Grant date	Mar 7, 2017
Priority date	—
Expiry date	Dec 18, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH02M1/0006
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method in a switched-mode power supply (SMPS) and SMPS circuits are provided. The method and circuits use bang-bang regulation to provide for an auxiliary power supply that can be used to power a controller of the SMPS. The additional circuitry required to achieve the method and circuits is minimal and represents advantages over techniques that require an additional power supply or require an auxiliary winding in a transformer. The bang-bang regulation controls switch devices within the SMPS such that a normally-on switch device is enabled while a normally-off switch device is disabled for some period of time. During this period, current is supplied to the SMPS controller and an associated energy-storage device.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.