EV0020 (MP1591DN) – 2A, 32V, 330KHz STEP-DOWN CONVERTER

EVALUATION BOARD

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.

EV0020 (MP1591DN) Rev. 1.5

www.MonolithicPower.com

4

12/21/2005

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2005 MPS. All Rights Reserved.

QUICK START GUIDE

The output voltage of this board is set to 5V. The board layout accommodates most commonly used

inductors and output capacitors.

1. Attach the positive and negative ends of the load to VOUT and GND, respectively.

EN pin to ground.

4. The REF pin outputs a 5V reference voltage. If used, a 0.01µF capacitor should be connected

from this pin to GND to reduce switching ripple. Leave unconnected if not used.

⎟⎟

⎠

⎞

⎜⎜

⎝

⎛

−

×

=

1

V

V

3

R

1

R

FB

OUT

Ω

≈

Ω

=

⎟

⎠

⎞

⎜

⎝

⎛

−

×

Ω

=

⎟⎟

⎠

⎞

⎜⎜

⎝

⎛

−

×

=

k

47

k

98

.

45

1

V

23

.

1

V

0

.

5

k

15

1

V

V

3

R

1

R

FB

OUT

standard 1% value.

See Maximum Duty Cycle limits to determine allowable output voltage range.