Invention Grant
- Patent Title: Predictive LED forward voltage for a PWM current loop
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Application No.: US15176670Application Date: 2016-06-08
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Publication No.: US09949326B2Publication Date: 2018-04-17
- Inventor: Peter Mikael Elo , Ari Kalevi Väänänen
- Applicant: TEXAS INSTRUMENTS INCORPORATED
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent William B. Kempler; Charles A. Brill; Frank D. Cimino
- Main IPC: H05B37/02
- IPC: H05B37/02 ; H05B33/08
Abstract:
A light system is disclosed. The light system includes a light emitting diode (LED) and a shunt transistor having a current path connected to the LED. A ramp generator circuit generates a ramp voltage. An amplifier has a first input terminal connected to the LED, a second input terminal coupled to receive the ramp voltage, and an output terminal connected to a control terminal of the shunt transistor.
Public/Granted literature
- US20170359866A1 PREDICTIVE LED FORWARD VOLTAGE FOR A PWM CURRENT LOOP Public/Granted day:2017-12-14
Information query
