TLD5190QV Datasheet, PDF (30/58 Pages) Infineon Technologies AG – H-Bridge DC/DC Controller for High Power LED Lighting

H-Bridge DC/DC Controller
TLD5190QV
Digital Dimming Function
7
Digital Dimming Function
To change brightness of LED loads without affecting the lighting-color of the LED a digital Dimming function via
PWM (Pulse Width Modulation) is often required.
7.1
Description
PWM dimming is commonly practiced to prevent color shift in the LED light source.
Via Parallel Interface
The PWMI pin detects a pulse width modulated (PWM) signal that disable the gate drivers from delivering output
current.
µC
PWM
Digital dimming
Figure 17 Digital Dimming Overview
PWMI
VSS AGND
Data Sheet
30
Rev. 1.0, 2016-05-20