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| EV1570DN-00A Datasheet, PDF (1/5 Pages) Monolithic Power Systems – 3A, 23V, 340KHz Synchronous Step-Down Converter | |||
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The Future of Analog IC Technology
GENERAL DESCRIPTION
The EV1570DN-00A is the evaluation board of
MPSâ MP1570 synchronous buck converter. It
has a wide supply range from 4.75V to 23V and
a continuous output current up to 3A. It features
synchronous rectification for high efficiency with
integrated high-side and low-side power
MOSFETs. The output voltage is set to 3.3V,
but can be easily adjusted to other levels from
1.22V. Current mode control and integrated
power MOSFETs minimize component counts,
board area, and solution cost. Fault condition
protections include cycle-by-cycle current limiting,
thermal shutdown, over voltage protection and
under voltage lockout. Internal soft-start reduces
turn-on stress. Small but thermally enhanced
SO-8 package minimizes board area with
excellent thermal management.
ELECTRICAL SPECIFICATIONS
Parameter
Supply Voltage
Output Voltage
Output Current
Symbol
VIN
VOUT
IOUT
Value
4.75 to 23
3.3
0 to 3
Units
V
V
A
EV1570DN-00A
3A, 23V, 340KHz
Synchronous Step-Down Converter
EVALUATION BOARD â INITIAL RELEASE
FEATURES
⢠Up to 3A Output Current
⢠Wide 4.75V to 23V Operating Input Range
⢠Monolithic Synchronous Buck with 100mâ¦
High-Side and Low-Side FETs
⢠Fixed 340KHz Frequency
⢠All Ceramic Input and Output Capacitors
⢠Programmable Soft-Start
⢠Programmable Input Under Voltage Lockout
APPLICATIONS
⢠Distributed Power Systems
⢠Pre-Regulator for Linear Regulators
⢠Notebook Computers
âMPSâ and âThe Future of Analog IC Technologyâ are Registered
Trademarks of Monolithic Power Systems, Inc.
EV1570DN-00A EVALUATION BOARD
(2âX x 1.5âY x 0.5âZ)
Board Number
EV1570DN-00A
MPS IC Number
MP1570
Efficiency vs
Load Current
100
95
VIN = 5V
90
85
80
VIN = 12V
75
70
65
60 VIN = 23V
55
50
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
LOAD CURRENT (A)
MP1570-EC01
EV1570DN-00A Rev. 1.1
www.MonolithicPower.com
1
4/6/2005
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
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