View source for 18818454. ZERO-CROSSING DETECTION CIRCUIT (ROHM CO., LTD.)

=ZERO-CROSSING DETECTION CIRCUIT=


==Organization Name==

[[:Category:ROHM CO., LTD.|ROHM CO., LTD.]]


[[Category:ROHM CO., LTD.]]

==Inventor(s)==

[[:Category:Satoru Nate of Kyoto (JP)|Satoru Nate of Kyoto (JP)]][[Category:Satoru Nate of Kyoto (JP)]]

[[:Category:Akinobu Sawada of Kyoto (JP)|Akinobu Sawada of Kyoto (JP)]][[Category:Akinobu Sawada of Kyoto (JP)]]

[[:Category:Natsuki Yamamoto of Kyoto (JP)|Natsuki Yamamoto of Kyoto (JP)]][[Category:Natsuki Yamamoto of Kyoto (JP)]]

==ZERO-CROSSING DETECTION CIRCUIT==


This abstract first appeared for US patent application 18818454 titled 'ZERO-CROSSING DETECTION CIRCUIT




==Original Abstract Submitted==

A semiconductor integrated circuit device includes: a zero-crossing detection unit configured to compare a first monitoring target signal and a second monitoring target signal respectively input through diodes from a first node and a second node between which an AC signal is applied, so as to generate a comparison signal; a logic unit configured to count a period of the comparison signal and estimate a zero-cross of the AC signal using the count value, so as to generate a zero-crossing detection signal; and a monitoring unit configured to adjust the first monitoring target signal and the second monitoring target signal to be suitable for input to the zero-crossing detection unit, where a first chip, in which the monitoring unit is integrated, is cut out in a rectangular shape having a substantially equal ratio between a short side and a long side in a plan view.



[[Category:G01R19/175]]
[[Category:H02M1/08]]
[[Category:H03K5/1536]]
[[Category:CPC_G01R19/175]]