US 11,747,845 B2
Mirror clamp circuit
Akio Sasabe, Kyoto (JP)
Assigned to Rohm Co., Ltd., Kyoto (JP)
Appl. No. 17/913,632
Filed by ROHM CO., LTD., Kyoto (JP)
PCT Filed Feb. 8, 2021, PCT No. PCT/JP2021/004537
§ 371(c)(1), (2) Date Sep. 22, 2022,
PCT Pub. No. WO2021/199682, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 2020-060595 (JP), filed on Mar. 30, 2020.
Prior Publication US 2023/0152827 A1, May 18, 2023
Int. Cl. H03K 17/08 (2006.01); G05F 1/56 (2006.01)
CPC G05F 1/56 (2013.01) [H03K 17/08 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A mirror clamp circuit comprising:
a comparator having:
a first input terminal connectable to a first control terminal of a transistor having
the first control terminal connected to another terminal of a resistor of which one terminal is fed with an output voltage and
a first terminal fed with a reference potential; and
a second input terminal fed with a reference voltage;
a transistor switch having a second control terminal fed with a control terminal voltage based on a comparison signal output from the comparator, the transistor switch being inserted between the first control terminal and the reference potential;
an OR circuit fed with a signal based on the control terminal voltage and the output voltage; and
a current feeder configured to change an amount of current fed to the comparator based on an output of the OR circuit.