EVQ4559DN-00A
1.5A, 55V, 2MHz
Step-Down Converter Evaluation Board
AEC-Q100 Qualified
EVQ4559DN-00A Rev. 1.0 www.MonolithicPower.com 1
12/23/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
The Future of Analog IC Technology
DESCRIPTION
The EVQ4559DN-00A is an evaluation board
for the MPQ4559, a high frequency step-down
regulator with an integrated power MOSFET.
The MPQ4559 integrates a 250mΩ MOSFET
that provides 1.5A load current over a wide
operating input voltage of 4.5V to 55V.
Current mode control provides fast transient
response and eases loop stabilization. An
internal soft-start prevents inrush current at
turn-on.
The EVQ4559DN-00A is a fully assembled and
tested PCB. It generates a +3.3V output voltage
at load current up to 1.5A from an 8V to 55V
input range. Switching frequency is set at
500kHz.
ELECTRICAL SPECIFICATIONS
Parameter Symbol Value Units
Input Voltage V
IN
8 – 55 V
Output Voltage V
OUT
3.3 V
Output Current I
OUT
1.5 A
FEATURES
1.5A Output Current
Programmable Switching Frequency up to
2MHz
Wide 8V to 55V Operating Input Range
Adjustable Output from 0.8V
Fully Assembled and Tested
APPLICATIONS
High Voltage Power Conversion
Game Machines
Automotive Systems
Industrial Power Systems
Distributed Power Systems
Printer Systems
Battery Powered Systems
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Quality Assurance. “MPS” and “The
Future of Analog IC Technology” are Registered Trademarks of Monolithi
Power Systems, Inc.
EVQ4559DN-00A EVALUATION BOARD
(L x W x H) 2.5” x 2.5” x 0.4”
(6.35cm x 6.35cm x 1.0cm)
Board Number MPS IC Number
EVQ4559DN-00A MPQ4559DN
0
0.5
1
1.5
2
I
OUT
(A)
EFFICIENCY (%)
40
50
60
70
80
90
100
Efficiency @V
OUT
=3.3V
fs=500kHz
V
IN
=55V
V
IN
=12V