EVQ4560-N-00A – 2A, 55V, 2MHz STEP-DOWN CONVERTER EVALUATION BOARD

NOTICE: The information in this document is subject to change without notice. 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.

EVQ4560-N-00A Rev. 1.0

www.MonolithicPower.com

7

1/22/2013

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2013 MPS. All Rights Reserved.

QUICK START GUIDE

1. Connect the positive and negative terminals of the load to the VOUT and GND pins,

respectively.

2. Preset the power supply output to between 8 and 55V, and then turn it off.

3. Connect the positive and negative terminals of the power supply output to the VIN and GND

pins, respectively.

4. Turn the power supply on. The MPQ4560DN will automatically startup.

5. To use the Enable function, apply a digital input to the EN pin. Drive EN higher than 1.55V to

turn on the regulator, drive EN less than 1.23V to turn it off.

6. An input under voltage lockout (UVLO) function is implemented by the addition of a resistor

R1

1.23V

1

R2





×

+









. It is preset to around 3.8V on this board.

determined by:

(

)

OUT

R8

29.625

V

0.8

=

×

−

(k ). Follow the Application Information section in the

device datasheet to recalculate the compensation, inductor and output capacitor values when

output voltage is changed.