EV4601EF-00A – EVB DESCRIPTION

NOTICE:

The information in this document is subject to change without notice. Please contact MPS for current specifications.

Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS

products into any application. MPS will not assume any legal responsibility for any said applications.

EV4601EF-00A Rev.1.0

www.MonolithicPower.com

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9/23/2011

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QUICK START GUIDE

1. Check the LED string voltage and preset the high voltage power supply’s output. For example,

2. Set a second power supply VIN to 12V as the input of all the EVBs. Set a third power supply to

5V as the EN input to all the EVBs, Set a fourth power supply to 5V as the DIM input of all EVBs.

3. Turn-off all power supplies.

4. Connect the positive terminal of the high voltage power supply to all the anodes of the LED

strings, and the negative terminal to all the EVB GND connector.

5. Connect each LED string cathode to the LED- connector on one EVB individually (one EVB for

one LED string).

6. Connect VIN (12V) the positive terminal to all the EVB VIN connectors and the negative terminal

to all the EVB GND connectors.

7. Connect the 5V DIM power supply positive terminal to all the EVB DIM connectors, and

negative terminal to all the EVB GND connectors.

8. Connect the 5V EN power supply positive terminal to all the EVB EN connectors, and negative

terminal to all the EVB GND connectors.

9. Connect all SYNC pin of all EVBs together for synchronization if necessary.

10. Turn on the high voltage power supply.

11. Turn on the 12V power supply.

12. Turn on the 5V DIM power supply.

13. Turn on the 5V EN power supply. All the LED strings should be lighted.

14. To demo the dimming function: replace the 5V power supply with a function generator. Set the

PWM signal amplitude to 5V and the frequency within 100Hz to 20kHz range. For analog

dimming, adjust the power supply on DIM connector from 1.4V to 3V