Patent · US Active

Sawtooth oscillator

US8294496B2 · kind B2 · utility

0Cited by

6References

5Claims

0Family size

Assignee

NXP B.V. · NL

Inventors

Michael Gattung · Hamburg, DE
Gerhard Osterloh · Adenau, DE
Ralf Beier · Dublin, IE

Key dates

Filing date	May 18, 2011
Grant date	Oct 23, 2012
Priority date	—
Expiry date	Jun 21, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH03K4/06
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A sawtooth generator circuit comprises a first triangular waveform generator with equal ramp up and ramp down rates and a second triangular waveform generator with equal ramp up and ramp down rates and which are equal to the ramp up and ramp down rates of the first triangular waveform generator. The first and second triangular waveform generators are controlled to be 180 degrees out of phase. A switching arrangement alternately switches the increasing or decreasing ramps of the first and second triangular waveform generators to an output of the sawtooth generator circuit.The invention provides a sawtooth generator circuit which is suitable for high frequency applications, with low current consumption and low ground bounce. A very fast falling edge can be obtained.

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