EV2905-K-01A

1.2V, 10A, 300kHz, Hysteretic Synchronous

Step-Down Controller Evaluation Board

EV2905-K-01A Rev. 1.0

www.MonolithicPower.com

1

12/7/2017

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

Preliminary Specifications Subject to Change

© 2017 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The EV2905-K-01A is the evaluation board for

the MP2905EK, a hysteretic synchronous step-

down controller. It offers a very compact

solution to achieve 1.2V, 10A continuous output

current from a 10.8V to 13.2V input voltage

range over a wide operation input voltage. An

adjustable soft-start prevents inrush current at

turn-on.

Hysteretic voltage control can provide fast

transient without any loop compensation. Full

protection features include OCP, output OVP,

thermal shut down.

The EV2905-K-01A frequency is approximately

300kHz (12V input). Peak Current limit is set at

15A. The efficiency is up to 90% (12V input)

with the supplied components.

ELECTRICAL SPECIFICATIONS

Parameter

Symbol

Value

Units

Input Voltage

10.8 - 13.2V

V

Output Voltage

1.2

V

Load Current

10

(1)

A

FEATURES

 10A Output Current,1.2V Output Voltage

 Programmable Soft-Start

 Hiccup Current Limit and Thermal

Shutdown

 Monotonic Startup into Prebias Output

 Startup Overvoltage Protection

 Enable/Shutdown

APPLICATIONS

 Motherboard Power Supplies

 AGP and PCI-Express Power Supplies

 Graphic-Card Power Supplies

 Set-Top Boxes

 Point-of-Load Power Supplies

Notes:

1)

Circuit can work up to about 10A over a wide input voltage range. This

EVB shows the performance at 12V input. So the frequency and current

limit are designed for the 12V application

“MPS” and “The Future of Analog IC Technology” are Registered Trademarks

of Monolithic Power Systems, Inc.

EV2905-K-01A EVALUATION BOARD

(L x W x H) 2.5” x 2.5” x 0.63”

(6.3cm x 6.3cm x 1.6cm)

Board Number

MPS IC Number

EV2905-K-01A

MP2905EK

Efficiency

0

10

20

30

40

50

60

70

80

90

100

02468

10