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:
Oct. 10, 2017
Filed:
Jan. 19, 2015
Marvell International Ltd., Hamilton, BM;
Yichao Wang, Singapore, SG;
Kong Yin Leong, Singapore, SG;
Ravishanker Krishnamoorthy, Singapore, SG;
Marvell International Ltd., Hamilton, BM;
Abstract
An apparatus includes a driver circuit and a motor control circuit. The driver receives first and second supply voltages and a control signal, and generates a target voltage on an output terminal according to the control signal. The motor control circuit is configured to generate the control signal and measure a rise time of a current of the driver circuit during a period of time in which the output terminal is at the target voltage. A method includes, during a time interval, providing the first supply voltage on an output of a first driver circuit, generating a target voltage on an output of a second driver circuit, and measuring a rise time of a current flowing between the outputs of the first and second driver circuits. For both the apparatus and method, the target voltage is between and substantially different from the first and second supply voltages.