AP5727-EVM

AP5727-EV
Application Note
AP5727 Application Information and Demo Board User Guide
Contents
1. Description
2. Schematic
3. EVM Board and Efficiency
4. PCB Layout
5. Bill of Materials
This application note contains new product information. Diodes, Inc. reserves the right to modify the product specification without notice. No liability is
assumed as a result of the use of this product. No rights under any patent accompany the sale of the product.
1/3
Rev. A
MAY 2010
www.diodes.com
 Diodes Incorporated
AP5727-EV
Application Note
AP5727 Application Information and Demo Board User Guide
1. Description
The AP5727(Boost) evaluation modules (EVM) provide a means for the user to evaluate quickly the
functionality and electrical performance of the AP5727 device. All inputs and outputs are brought out
to test points for control and monitoring. All passive components are included on the EVM for device
operation. The input pin should be connected to an external supply; the output should be connected to
a load.
2. EVM Schematic
VOUT
VIN
D1
L1
1
2
22uH
B0540WS
Cout
10uF
Cin
4.7uF
U1
R1
11K
1
2
R2
1K
3
SW
Vin
4
Vss
FB
EN
5
AP5727
Figure 1. AP5727 schematic
3. EVM board and Efficiency
IOUT (m A) vs. Efficiency (%)
90
V IN = 5V
Efficiency(%)
85
V IN = 4.2V
80
V IN = 3.6V
75
V IN = 3.3V
70
65
60
55
50
0
20
40
IOUT (mA)
60
80
This application note contains new product information. Diodes, Inc. reserves the right to modify the product specification without notice. No liability is
assumed as a result of the use of this product. No rights under any patent accompany the sale of the product.
2/3
Rev. A
MAY 2010
www.diodes.com
 Diodes Incorporated
AP5727-EV
Application Note
AP5727 Application Information and Demo Board User Guide
4. Board Layout
Top Side
Bottom Side
5. Bill of Materials
Component
Quantity
Value
Cin
1
4.7uF
Cout
1
10uF
Location
Source
1
Size
22uH/0.56A
LMK316 B7
475KL-T
TAIYO YUDEN LMK316 F 106ZL-T
Wurth
744042220
Electronics
GOTREND
GLP3810PH220N
3.8 X 3.8 X 1.05
22uH/0.51A
TAIYO YUDEN
4.0 X 4.0 X 1.25
TAIYO YUDEN
22uH/0.88A
L1
Part No.
NR4012
4.8 X 4.8 X 1.6
R2
1
1kΩ(1%)
YAGEO
R0805
R1
1
11kΩ(1%)
YAGEO
R0805
40V/0.5A
ZETEX
ZLLS400
SOD323
D1
1
40V/0.5A
DIODES
B0540WS
SOD323
40V/0.25A
DIODES
SDM20U40
SOD523
U1
1
AP5727_SOT26
Diodes
PCB
1
SOT26
TDB0045
This application note contains new product information. Diodes, Inc. reserves the right to modify the product specification without notice. No liability is
assumed as a result of the use of this product. No rights under any patent accompany the sale of the product.
3/3
Rev. A
MAY 2010
www.diodes.com
 Diodes Incorporated
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