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:
Mar. 22, 2016
Filed:
Jan. 30, 2014
Stmicroelectronics S.r.l., Agrate Brianza, IT;
Paolo Pascale, Rho, IT;
Federico Magni, Settimo Milanese, IT;
Ezio Galbiati, Agnadello Cremona, IT;
Giuseppe Maiocchi, Capiago Intimiano, IT;
Michele Berto Boscolo, Sesto San Giovanni, IT;
STMICROELECTRONICS S.R.L., Agrate Brianza (MB), IT;
Abstract
A method of PWM regulating a motor through a half-bridge drive stage includes sampling the motor current to obtain sampled values during driving intervals or during current decay intervals, and comparing a last sampled value with a current threshold. The motor is coupled in a slow decay electrical path for the duration of a current decay interval if the last sampled value does not exceed the current threshold. Otherwise the motor is coupled in a fast decay electrical path for a portion of the duration of the current decay interval, and is coupled in the slow decay electrical path for a remaining part of the duration of the same current decay interval.