US 12,224,654 B2
Pulse receiving circuit and signal transmission device
Tsuyoshi Fukura, Kyoto (JP); Daiki Yanagishima, Kyoto (JP); and Akio Sasabe, Kyoto (JP)
Assigned to Rohm Co., Ltd., Kyoto (JP)
Appl. No. 17/917,661
Filed by Rohm Co., Ltd., Kyoto (JP)
PCT Filed Apr. 6, 2021, PCT No. PCT/JP2021/014584
§ 371(c)(1), (2) Date Oct. 7, 2022,
PCT Pub. No. WO2021/215237, PCT Pub. Date Oct. 28, 2021.
Claims priority of application No. 2020-077779 (JP), filed on Apr. 24, 2020.
Prior Publication US 2023/0155470 A1, May 18, 2023
Int. Cl. H02M 1/08 (2006.01); H02M 1/00 (2006.01); H03K 19/0175 (2006.01)
CPC H02M 1/0006 (2021.05) [H03K 19/0175 (2013.01); H02M 1/08 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A pulse receiving circuit comprising:
a first pulse detector arranged to receive a differential input between a first reception pulse signal at a secondary winding of a first transformer and a second reception pulse signal at a secondary winding of a second transformer;
a second pulse detector arranged to receive the differential input between the first reception pulse signal and the second reception pulse signal with input polarity reversed to that of the first pulse detector;
a logic unit arranged to generate a reception pulse signal based on output signals of the first pulse detector and the second pulse detector;
a first switch and a second switch connected between both ends of the secondary windings of the first transformer and the second transformer, respectively; and
a timer to turn on the first switch and the second switch for a predetermined masking period from pulse detection timings of the first pulse detector and the second pulse detector, respectively.