Digital circuit for generating a pulse-width modulated signal, particularly for regulating an analog variable

Patent metadata

Field	Value
Publication number	US-9531357-B2
Application number	US-201514614168-A
Country	US
Kind code	B2
Filing date	Feb 4, 2015
Priority date	Feb 5, 2014
Publication date	Dec 27, 2016
Grant date	Dec 27, 2016

Abstract

A digital circuit configuration for generating a pulse-width modulated signal, particularly for regulating an analog electrical variable using pulse-width modulation, is described in which an actual value of the analog variable present at the input of an A/D converter is converted to a digital output variable, the digital output variable of the A/D converter being provided or supplied to a comparator unit, which compares the output variable to an upper threshold value and to a lower threshold value; at the output of the comparator unit, a signal being present which indicates whether the output variable of the A/D converter lies above the upper threshold value or below the lower threshold value; and it being particularly provided that the output of the A/D converter is connected to a digital timer, using which the pulse-width ratio of a generated pulse-width modulated signal is settable.

First claim

What is claimed is:

1. A digital circuit configuration for generating a pulse-width modulated signal, comprising:
an A/D converter to convert an actual value of the analog variable, present at an input of the A/D converter, to a digital output variable, which is provided from the digital output of the A/D converter to a comparator unit;
a comparator unit to compare the digital output variable to an upper threshold value and to a lower threshold value, and to output at an output…

Assignees

• Bosch Gmbh Robert

Inventors

• Gruenewald Martin
• Aue Axel

Classifications

• H03K5/06 Primary

  Electricity · mapped topic

• H03M1/12

  Electricity · mapped topic

• H03K5/156

  Electricity · mapped topic