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:
Feb. 05, 2019
Filed:
Sep. 22, 2017
Linear Technology Holding, Llc, Norwood, MA (US);
Lucas Andrew Milner, San Jose, CA (US);
Joshua William Caldwell, Los Gatos, CA (US);
Linear Technology Holding, LLC, Norwood, MA (US);
Abstract
Techniques are provided for low, or deep, dimming of a light-emitting diode (LED) load. In an example, a low dimming circuit can include a target current detector configured to provide an output indicative of a target current of a power stage of a pulse width modulated driver, and a control circuit configured to receive a PWM signal of the PWM LED driver, to control a first transition to a first state of a power switch of the power stage during an on-interval of a first PWM cycle of the PWM signal, and to control a second transition to the first state of the power switch using the output of the target current detector during an off interval of the first PWM cycle.