US Patent No. 10,368,406

FEED FORWARD CONTROLLED VOLTAGE TO CURRENT SOURCE FOR LED DRIVER


Patent No. 10,368,406
Issue Date July 30, 2019
Title Feed Forward Controlled Voltage To Current Source For Led Driver
Inventorship Isaac Cohen, Dix Hills, NY (US)
Assignee Texas Instruments Incorporated, Dallas, TX (US)

Claim of US Patent No. 10,368,406

1. A device, comprising:a DC input configured to receive a DC input voltage;
a DC output configured to deliver a DC output voltage;
a current sensor for measuring a DC input current and generating a current signal related to the DC input current;
a comparator circuit for comparing a reference signal derived from a DC output voltage with the current signal to generate a comparison signal;
a control circuit coupled to the comparator circuit, and responsive to the comparison signal, the control circuit is configured to regulate an output current to be directly proportional to a DC input voltage and independent of the DC output voltage.