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 V
IN
10.8 - 13.2V
V
Output Voltage V
OUT
1.2 V
Load Current I
OUT
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 curren
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
V
IN
=12V, V
OUT
=1.2V
0
10
20
30
40
50
60
70
80
90
100
I
OUT
(A)
0246810
