US 2010/0060177 A1 · LOAD DRIVING APPARATUS

Abstract

The load driving apparatus according to the present invention includes a load current setting signal generating section, a load current generating section, a reference voltage generating section and a drive voltage generating section. The load current setting signal generating section generates a desired load current setting signal. The load current generating section generates a load current based on the load current setting signal to drive the load. The reference voltage generating section generates a reference voltage based on the load current setting signal. The drive voltage generating section generates a drive voltage, supplies the drive voltage to the load, generates a between-both-terminals voltage between both terminals of the load current generating section based on the drive voltage and controls the drive voltage so that the difference between the between-both-terminals voltage and the reference voltage becomes small.

Claims12

Dependent claims

A load driving apparatus comprising:

a load current setting signal generating section operable to generate a desired load current setting signal;
a load current generating section operable to generate a load current based on said load current setting signal to drive a load;
a reference voltage generating section operable to generate a reference voltage based on said load current setting signal;
and
a drive voltage generating section operable to generate a drive voltage, to supply said drive voltage to said load, to generate a between-both-terminals voltage between both terminals of said load current generating section based on said drive voltage and to control said drive voltage so that the difference between said between-both-terminals voltage and said reference voltage becomes small.

2 more elements

Dependencies are inferred from the claim text.

Load driving apparatus

Life of this patent

Load driving apparatus

Life of this patent

Abstract

Claims12