MPS MP2106DQ 2.6v to 15v in, 1.5a out synchronous buck converter evaluation board Datasheet

EV2106DQ/DK-00A
2.6V to 15V IN, 1.5A OUT Synchronous
Buck Converter Evaluation Board
The Future of Analog IC Technology
GENERAL DESCRIPTION
FEATURES
The EV2106DQ/DK-00A is an evaluation board
designed to demonstrate the abilities of the
MP2106DQ and MP2106DK synchronous buck
converters, respectively. It can convert an input
voltage with a range of 2.6V to 15V to a lower
output voltage from 0.9V while delivering 1.5A to
the load. The output voltage is preset to 1.8V,
but can be easily be adjusted to other levels
from 0.9V.
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Fault condition protection includes cycle-by-cycle
current limiting, thermal shutdown and under
voltage lockout. The part’s current mode control,
high switching frequency and integrated
high-side and low-side power MOSFETs,
combined with tiny 10-pin MSOP or QFN
packages, provide a solution requiring a
minimum of components, board area and cost.
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Up to 1.5A Continuous Output Current
Wide 2.6V to 15V Operating Input Range
Internal Power Switches
800KHz Fixed Switching Frequency
All Ceramic Input and Output Capacitors
Programmable Soft-Start
Programmable Input Under Voltage Lockout
APPLICATIONS
SOHO Routers, PCMCIA Cards, Mini PCI
Handheld Computers
PDAs
Cellular Phones
Digital Still and Video Cameras
Small LCD Displays
“MPS” and “The Future of Analog IC Technology”, are Registered Trademarks of
Monolithic Power Systems, Inc.
ELECTRICAL SPECIFICATIONS
Parameter
Input Voltage
Output Current
Symbol
Value
Units
VIN
2.6 to 15
1.5
V
ILOAD
A
EV2106DQ/DK-00A EVALUATION BOARD
100
90
VIN=3.3V
EFFICIENCY (%)
80
70
VIN=5V
60
50
40
30
20
10
0
Dimensions (2.4”X x 1.8”Y x 0.4”Z)
10
100
1000
LOAD CURRENT (A)
10000
MP2106_TAC_EC02
Board Number
MPS IC Number
EV2106DQ/DK-00A
MP2106DQ/DK
EV2106DQ/DK-00A Rev. 1.3
www.MonolithicPower.com
11/18/2005
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
1
EV2106DQ/DK-00A – 2.6V TO 15V IN, 1.5A OUT SYNCHRONOUS BUCK EV BOARD
EVALUATION BOARD SCHEMATIC
VIN
C1
NS
OFF ON
5
R5
NS
C6
NS
7
6
VIN
BST
C3
10nF
8
RUN
VOUT
LX
1
MP2106
SS
3
D1
1N5819
FB
COMP
2
C11
NS
VREF SGND PGND
C4
NS
C10
10nF
C5
3.3nF
4
10
C9
NS
9
C7
10nF
EV2106_S01
EV2106DQ/DK-00A BILL OF MATERIALS
Qty
Ref
Value Description
Package Manufacturer
Manufacturer P/N
5
C1, C4, C6, C9,
C11
1
C2 (1)
10µF
Ceramic Cap, 10V, X7R
SM1210
AVX
1210ZC106KAT2A
1
C8
22µF
Ceramic Cap, 6.3V, X5R
SM1210
TDK
C3225X5R0J226M
3
C3, C7, C10
10nF
Ceramic Cap, 50V, X7R
SM0805
AVX
08055C103KAT2A
1
C5
3.3nF
Ceramic Cap, 50V, X7R
SM0805
AVX
1
D1
Schottky Diode, 40V, 1A
SOD123 Diodes Inc
1
L1
1
R1
100kΩ Film Res, 5%
1
R2
2
R3, R4
1
R5
Do Not Stuff
1
U1
DC-DC Converter
Do Not Stuff
5µH
Inductor, 2.2A
Sumida
CDRH6D26-5R0
SM0805
Panasonic
ERJ-6GEYJ104V
6.8kΩ Film Res, 5%
SM0805
Panasonic
ERJ-6GEYJ682V
10kΩ
SM0805
Panasonic
ERJ-6ENF1002V
QFN10
MPS
MP2106DQ
Film Res, 1%
SMD
08055C332KAT2A
1N5819HW-7
Note:
1) For VIN > 10V, use a 16V capacitor for C2.
EV2106DQ/DK-00A Rev. 1.3
www.MonolithicPower.com
11/18/2005
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
2
EV2106DQ/DK-00A – 2.6V TO 15V IN, 1.5A OUT SYNCHRONOUS BUCK EV BOARD
PRINTED CIRCUIT BOARD LAYOUT
Figure 1—Top Silk Layer
Figure 2—Top Layer
Figure 3—Bottom Silk Layer
Figure 4—Bottom Layer
EV2106DQ/DK-00A Rev. 1.3
www.MonolithicPower.com
11/18/2005
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
3
EV2106DQ/DK-00A – 2.6V TO 15V IN, 1.5A OUT SYNCHRONOUS BUCK EV BOARD
QUICK START GUIDE
The output voltage of this board is set to 1.8V. The board layout accommodates most commonly used
inductors and output capacitors.
1. Attach positive end and negative end of load to OUT and GND pins, respectively.
2. Attach input voltage (2.6V ≤ VIN ≤ 13.5V) and input ground to IN and GND pins, respectively.
3. A pull-up resistor has connected the EN pin to the IN pin, so the MP2106 will startup
automatically without applying an external voltage to the EN pin.
4. The output voltage VOUT can be changed by varying R3. Calculate the new value using the
formula:
R3 = R4 × (
VOUT
− 1)
VFB
where VFB = 0.9V and R4 = 10kΩ.
For example, for VOUT = 2.5V:
R3 = R4 × (
VOUT
2 .5 V
− 1) = 10kΩ × (
− 1) = 17.78kΩ ~ 17.8kΩ
VFB
0. 9 V
for the closest standard 1% value.
See Maximum Duty Cycle limits to determine allowable output voltages.
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.
EV2106DQ/DK-00A Rev. 1.3
www.MonolithicPower.com
11/18/2005
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
4
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