DC/DC
stages
LED strings
DC
input
Getting Familiar With the Kit
2
Getting Familiar With the Kit
2.1
Kit Contents
The kit consists of:
•
LED BoosterPack
•
AC/DC Power Adapter (12 V 1A)
•
Quick Start Guide
2.2
Kit Specifications
The LED BoosterPack has the following specifications:
•
Power Input:
–
6 V minimum @ 1.2A
–
20 V maximum @ 360 mA
•
Boost Stages (each):
–
Input
•
6 V minimum @ 400 mA
•
20 V maximum @ 120 mA
–
Output
•
24 V nominal @ 100 mA
3
Hardware Overview
illustrates a LED lighting system running from DC power.
Figure 2. Lighting System Topology
There are multiple ways of controlling LEDs. This board uses the C2000 devices to control a separate DC
supply for each of the LED strings. Brightness control is accomplished using the C2000 devices by
independently varying the output power of each DC/DC stage. This allows the user to control the average
current passing through each LED string. Since average current is roughly proportional to lumen output,
each LED string’s brightness is controlled.
shows the circuit diagram for the LED BoosterPack.
5
SPRUHH9 – July 2012
C2000 LED BoosterPack
Copyright © 2012, Texas Instruments Incorporated
