The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2020
Filed:
Jan. 30, 2019
Applicant:
Rohm Co., Ltd., Kyoto, JP;
Inventors:
Shun Fukushima, Kyoto, JP;
Kazuhiro Murakami, Kyoto, JP;
Assignee:
Rohm Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 17/687 (2006.01); H02M 7/537 (2006.01); H02M 3/158 (2006.01); H02M 1/08 (2006.01);
U.S. Cl.
CPC ...
H03K 17/6872 (2013.01); H02M 1/08 (2013.01); H02M 3/158 (2013.01); H02M 7/537 (2013.01);
Abstract
A driver circuit (DRV) includes a pull-up circuit (PU) and a pull-down circuit (PD) that share an output node (external terminal (T)). A signal (DI(DI)) input to the pull-up circuit (PU) and a signal (DI) input to the pull-down circuit (PD) are selected in a complementary manner, and the output node outputs an output signal in which rising time and falling time of the signals (DI(DI) and DI) are adjusted in accordance with on-off operation of the signals. The rising time is adjusted by transistors (Mand M) and a resistor (R), while the falling time is adjusted by transistors (M, Mand M) and a resistor (R).