Patent · US Active

Implementation of spread spectrum in PFM mode for DC-DC converters

US9929650B1 · kind B1 · utility

5Cited by

1References

18Claims

0Family size

Assignee

TEXAS INSTRUMENTS DEUTSCHLAND GMBH · DE

Inventors

Joerg Kirchner · Enghausen, DE
Hermann Seibold · Alzenau, DE
Ivo Huber · Weingarten, DE

Key dates

Filing date	Sep 23, 2016
Grant date	Mar 27, 2018
Priority date	—
Expiry date	Sep 23, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH02M1/0009
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Methods and apparatus for operating a DC-to-DC voltage converter that has a power stage that includes at least one switching transistor. The output voltage of the DC-to-DC voltage converter is monitored. If the output voltage drops below a lower output voltage threshold, a series of drive pulses is provided to the at least one switching transistor to commence switching of the at least one switching transistor. If the output voltage rises above an upper output voltage threshold, a random number of additional drive pulses is provided to the at least one switching transistor and then the provision of drive pulses to the at least one switching transistor is ceased.

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