REFERENCE VOLTAGE GENERATION CIRCUIT AND REFERENCE VOLTAGE GENERATION METHOD

WIPO Patent Application WO/2018/146878

A1

This reference voltage generation circuit is provided with: a first voltage generation circuit, in which a first resistor and a first PN junction element are connected in series, said first voltage generation circuit generating a first direct current voltage; a second voltage generation circuit, in which second and third resistors, and a plurality of second PN junction elements connected in parallel are connected in series, said second voltage generation circuit generating a second direct current voltage; and an operation amplifier that generates a differential voltage between the first direct current voltage and the second direct current voltage. The reference voltage generation circuit generates a reference voltage based on a band gap by controlling, on the basis of the differential voltage, currents flowing in the first and second voltage generation circuits. The reference voltage generation circuit is also provided with a third voltage generation circuit, in which a fourth resistor and a transistor are connected in series, said third voltage generation circuit being connected in parallel to the first voltage generation circuit. The third voltage generation circuit generates a third direct current voltage corresponding to a base current flowing in a third PNP bipolar transistor, and applies the third direct current voltage to the operation amplifier with the first direct current voltage.

HIROSE YOHKOH (JP)

PCT/JP2017/040400

August 16, 2018

November 09, 2017

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RICOH ELECTRONIC DEVICES CO LTD (JP)

G05F3/30

JP2013092926A	2013-05-16
JPH05173659A	1993-07-13
JP2014016860A	2014-01-30

SAMEJIMA, Mutsumi et al. (JP)

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