EVM3686-RU-00A – 18V 20A STEP-DOWN POWER MODULE
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.
EVM3686-RU-00A Rev. 1.0 www.MonolithicPower.com 7
7/23/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
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QUICK START GUIDE
The output voltage of this board is set externally which can be regulated as 1V, 1.2V, 1.5V or 1.8V by
choosing the jumper position. The input voltage can range from 8V to 18V. The minimum 8V input
voltage is limited by the EN signal, which is derived from VIN through a resistor divider. Lower input
voltage (as low as 4.5V) can be set by fine tuning the resistor divider values. The following is the
procedures to turn on the power module.
1. Put the jumper to the position to the desired output voltage setting.
2. Connect the positive and negative terminals of the load to the VOUT and GND pins,
respectively.
3. Preset the power supply output between 8V and 18V, and then turn off the power supply. Make
sure the power supply has high enough current limit to supply the current.
4. Connect the positive and negative terminals of the power supply output to the VIN and GND
pins, respectively.
5. Turn the power supply on. The power module will automatically start up.
