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Set-Up
Figure 7. TPS61177A EVM Test Setup for Standalone Evaluation
The minimum procedure for turning on the LEDs with PWM only is as follows:
•
Connect external power(VIN) and ground to the board.
•
Recommend connecting 12 V to J1. (Any valid V
IN
2.7 V to 24 V : recommended boost conversion ratio
less than 10).
•
Connect ground to J2.
•
Connect an external PWM generator with levels 1.8 V or higher(but lower than VINB) with freq
between 0.1 kHz and 25 kHz to middle pin of JP9 or simply connect a jumper connector to JP9 to high
position(100% PWMB input)
•
Check if EN input is at high position of JP1
•
Turn on the external supplies.
2.4
Instructions for Evaluation With Software
The TPS61177A evaluation kit includes an I2C-compatible program and USB2ANY board that can help
exercise the part in a simple way. Contained in this document is a description of how to use the USB2ANY
board with the evaluation board and the interface software.
Figure 8
shows the picture of the
TPS61177AEVM setup for the evaluation with software.
19
SNVU490 – OCTOBER 2015
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