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:
Sep. 15, 2020
Filed:
Nov. 17, 2015
Current Lighting Solutions, Llc, East Cleveland, OH (US);
Zhichao Liu, ShangHai, CN;
CURRENT LIGHTING SOLUTIONS, LLC, East Cleveland, OH (US);
Abstract
A protection circuit for an LED driver and a DC/DC converter. The LED driver includes a DC/DC converter and a protection circuit. The DC/DC converter is used to convert the input voltage of the DC voltage input terminal into an output voltage, which comprises a high frequency switch and an inductor. The protection circuit comprises a detection module, a trigger module and a locking module. The detection module is coupled to the inductor for detecting the output voltage and outputting the voltage detection signal. The trigger module is used to receive the voltage detection signal and output a voltage trigger signal when the voltage detection signal is a negative voltage and the absolute value of the negative voltage is greater than or equal to the preset value. The locking module is coupled to the trigger module and stops the high frequency switch from operating after receiving the voltage trigger signal.