PhlatLight ? DK-105T Series Development Kit Manual
2.1
Driver Board
The driver circuit, designed by Texas Instruments, is designed to provide up to 5A of current to a SSR-90
or SSR-50 PhlatLight LED.
The driver board is fully capable of providing PWM dimming from 0 to 100% with a 0 to 10VDC external
signal into an MSP430 microcontroller. The control voltage is divided down using a resistor network, then
sampled by the internal Analog to Digital converter. The microcontroller then produces a Pulse Width
Modulated signal with duty cycle proportional to the input voltage. The longer the duty cycle, the
brighter the LED will be. PWM freq is 400Hz +/-10Hz. Code can be provided upon request.
The driver requires a 12VDC input from an external AC/DC source. The external PWM voltage input range
is between 0 – 10V. Care must be taken to not exceed these voltages as it may cause permanent damage
to the driver board.
2.2
Mounting Hardware and Thermal Interface Material (TIMs)
This development kit does not contain any thermal interface material. Do not mount the LED module
without proper thermal interface material.
Suggested Thermal Interface Materials include:
M2.5x6 screws are provided for attachment of SSR package types.
Figure 2: Mounting Hole Pattern
960032 Rev A ? Luminus Devices, Inc. All rights reserved.
Page 3
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