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. 30, 2017
Filed:
Dec. 20, 2014
Semiconductor Components Industries, Llc, Phoenix, AZ (US);
Takashi Ogawa, Gifu-ken, JP;
SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC, Phoenix, AZ (US);
Abstract
In accordance with an embodiment, a method for driving a motor includes decreasing a duty of an input signal to a motor and decreasing a duty of a duty control signal in response to decreasing the duty of the input signal The duty of the duty control signal is maintained at a first level in response to a reverse current signal and decreased from the first level in the absence of the reverse current signal. In accordance with another embodiment a driver circuit includes a state controller having an input coupled to a pulse width modulation detection circuit and an output connected to a reverse current detection circuit.