AN2415 Datasheet, PDF (1/11 Pages) STMicroelectronics – Using the output detection feature of the high-brightness

AN2415
Application note
Using the output detection feature of the high-brightness
LED driver STP08CDC596 evaluation board
Note:
Introduction
This document describes how to implement a complete solution for driving a high-brightness
LED array. Based on STP08CDC596 drivers and controlled by an ST7FLITE3x
microcontroller, there are two versions of the evaluation board:
■ STEVAL-ILL002V1 using OSRAM LEDs
■ STEVAL-ILL002V2 using Toshiba LEDs
The STP08CDC596 LED driver is replaced by the new, higher performing STP08DP05 LED
driver. The two available versions of the evaluation board with the STP08DP05 replace the
STEVAL-ILL002V1 and the STEVAL-ILL002V2, and are described in application note
AN2478.
The new boards available are:
■ STEVAL-ILL002V3 using OSRAM LEDs
■ STEVAL-ILL002V4 using VISHAY LEDs
Forty high-brightness LEDs are arranged on the board in a 5x8 matrix. The matrix is driven
by five 8-channel STP08CDC596 drivers.
The main features of the evaluation board are:
■ Brightness and blinking regulation
■ Animated text
■ Error detection on output
■ GUI (graphic user interface)
■ DC-DC converter
The innovative feature of the STP08CDC596 is the full output error detection function which
enables output status checking without invasive testing (via software only).
Figure 1. STEVAL-ILL002Vx evaluation board
For more information about other boards based on the STPxxC/L596 driver family, refer to
application note AN2141 which provides details concerning the basic features of the driver
family, the microcontroller interface and chip power dissipation. Refer to user manual
UM0181 for information about how to get started using the evaluation boards.
August 2007
Rev 4
1/11
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