MPS EV1517DR-00A 3a, 25v, 1.1mhz step-up converter Datasheet

TM
EV1517DR-00A
3A, 25V, 1.1MHz
Step-Up Converter
The Future of Analog IC Technology
TM
EVALUATION BOARD
GENERAL DESCRIPTION
FEATURES
The EV1517DR-00A is the evaluation board for
the MP1517, a 3A, fixed frequency step-up
converter ideal for medium-to-high current
step-up applications. The high 1.1MHz
switching frequency allows for smaller external
components producing a compact solution for
size constrained cameras, PDAs and cell
phones. The low 0.7V feedback voltage offers
higher efficiency in white LED driver
applications including cell phone camera flash.
The MP1517 regulates the output voltage up to
25V with efficiencies greater than 90%.
Soft-start, cycle-by-cycle current limiting, and
input
under
voltage
lockout
prevent
overstressing or damage to sensitive external
circuitry at startup and output short-circuit
conditions. Current-mode regulation and
external compensation components allow the
MP1517 control loop to be optimized over a
wide variety of input voltage, output voltage,
and load current conditions. The MP1517 is
available in the thermally enhanced QFN16
(4mm x 4mm) package.
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4A Peak Current Limit
Low 700mV Feedback Threshold
Internal 150mΩ Power Switch
Input Range of 2.6V to 25V
Over 90% Efficiency
Zero Current Shutdown Mode
Under Voltage Lockout Protection
Open Load Protection
Soft-Start Operation
Thermal Shutdown
Tiny 4mm x 4mm 16-Pin QFN Package
APPLICATIONS
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Boost and SEPIC Regulators
Handheld Computers
Cell Phone Camera Flash, PDAs
Digital Still and Video Cameras
“MPS” and “The Future of Analog IC Technology”, are Trademarks of Monolithic
Power Systems, Inc.
ELECTRICAL SPECIFICATIONS
Parameter
Input Voltage
Output Voltage
Output Current
Symbol
Value
Units
VIN
VOUT
IOUT
5
12
1
V
V
A
EV1517DR-00A EVALUATION BOARD
Efficiency vs
Load Current
100
95
VOUT = 12V
EFFICIENCY (%)
90
85
80
75
70
VOUT = 18V
65
60
Dimensions (2.0”X x 2.0”Y x 0.4”Z)
Board Number
MPS IC Number
EV1517DR-00A
MP1517DR
EV1517DR-00A Rev. 1.0
6/8/2005
VIN = 5V
55
50
1
10
100
LOAD CURRENT (mA)
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MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
1000
MP1517-EC01
1
TM
EV1517DR-00A – 3A, 25V, 1.1MHz STEP-UP CONVERTER
EVALUATION BOARD
EVALUATION BOARD SCHEMATIC
VIN
5V
GND
U1
4
EN
8
IN
SW
EN
GND
SW
15
FB
MP1517
BP
C5
10nF
COMP
7
D1
B320A-13
20V/3A
9
12V
GND
SS
C4
10nF
3
VOUT
10
OLS
SGND SGND
5
16
1
PGND PGND
13
11
12
C3
1nF
C6
NS
EV1517_S01
EV1517DR-00A BILL OF MATERIALS
Qty
Ref
Value Description
1
C1
10µF Ceramic Cap, 6.3V, X5R
1210
TDK
C3225X5R1A106K
2
C2A, C2B
10µF Ceramic Cap, 16V, X7R
1210
TDK
C3225X7R1C106M
1
C3
1nF
Ceramic Cap, 50V, X7R
0805
TDK
C2012X7R1H102K
2
C4, C5
10nF
Ceramic Cap, 50V, X7R
0805
TDK
C2012X7R1H103K
1
C6
Do Not Stuff
1
D1
Schottky Diode, 20V, 3A, SMA
Diodes Inc
B320A-13
1
L1
4.7µH 5.6A
Sumida
CDRH8D43-4R7NC
1
R1
162kΩ Metal Film Res, 1%
0805
Panasonic
ERJ-6ENF1623V
1
R2
10kΩ Metal Film Res, 1%
0805
Panasonic
ERJ-6ENF1002V
1
R3
20kΩ Metal Film Res, 5%
0805
Panasonic
ERJ-6GEYJ203V
1
R4
100kΩ Metal Film Res, 5%
0805
Panasonic
ERJ-6GEYJ104V
1
U1
MPS
MP1517DR
EV1517DR-00A Rev. 1.0
6/8/2005
DC-DC Converter
Package Manufacturer Manufacturer P/N
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MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
2
TM
EV1517DR-00A – 3A, 25V, 1.1MHz STEP-UP CONVERTER
EVALUATION BOARD
PRINTED CIRCUIT BOARD LAYOUT
Figure 1—Top Silk Layer
Figure 2—Top Layer
Figure 3—Bottom Layer
EV1517DR-00A Rev. 1.0
6/8/2005
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
3
TM
EV1517DR-00A – 3A, 25V, 1.1MHz STEP-UP CONVERTER
EVALUATION BOARD
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency vs
Load Current
Feedback Voltage vs
Temperature
100
715
FEEDBACK VOLTAGE (mV)
VOUT = 18V
95
EFFICIENCY (%)
90
85
VOUT = 22V
80
75
70
65
60
VIN = 12V
55
50
1
10
100
1000
LOAD CURRENT (mA)
710
705
700
695
690
685
-50
10000
50
100
0
TEMPERATURE (°C)
MP1517-EC01
150
MP1517-TPC01
Frequency vs
Temperature
Maximum Duty Cycle vs
Temperature
1.15
91.8
DUTY CYCLE (%)
FREQUENCY (MHz)
91.7
1.10
1.05
91.6
91.5
91.4
91.3
91.2
1.00
-50
0
50
100
TEMPERATURE (°C)
91.1
-50
150
0
50
100
TEMPERATURE (°C)
MP1517-TPC02
Operating Supply
Current vs Temperature
MP1517-TPC03
BP Voltage vs
Temperature
Current Limit vs
Temperature
4.8
920
2.42
4.6
880
860
2.41
2.40
2.39
2.38
840
2.37
820
-50
2.36
-50
0
50
100
TEMPERATURE (°C)
150
MP1517-TPC04
EV1517DR-00A Rev. 1.0
6/8/2005
CURRENT LIMIT (A)
2.43
BP VOLTAGE (V)
940
900
150
4.4
4.2
4.0
3.8
3.6
3.4
3.2
0
50
100
TEMPERATURE (°C)
150
3.0
-50
MP1517-TPC05
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MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
0
50
100
TEMPERATURE (°C)
150
MP1517-TPC06
4
TM
EV1517DR-00A – 3A, 25V, 1.1MHz STEP-UP CONVERTER
EVALUATION BOARD
QUICK START GUIDE
The output voltage of this board is set to 12V. The board layout accommodates most commonly used
inductors and output capacitors.
1. Preset Power Supply to 2.6V ≤ VIN ≤ 6V.
2. Turn Power Supply off.
3. Connect Power Supply terminals to:
Positive (+): VIN, EN
Negative (–): GND
4. Connect Load to:
Positive (+): VOUT
Negative (–): GND
5. Turn Power Supply on after making connections.
6. The MP1517 is enabled on the evaluation board once VIN is applied. To disable the MP1517,
disconnect EN from VIN.
7. The output voltage VOUT can be changed by varying R1. Calculate the new value using the
formula:
⎛V
⎞
R1 = ⎜⎜ OUT − 1⎟⎟R2
⎝ VFB
⎠
Where VFB = 0.7V and R2 = 10kΩ
For example, for VOUT = 15V
⎛ 15 V
⎞
− 1⎟ × 10kΩ = 204.3kΩ
R1 = ⎜
⎝ 0. 7 V
⎠
Therefore use a 205kΩ standard 1% value resistor.
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.
EV1517DR-00A Rev. 1.0
6/8/2005
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
5
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