sip12202db Vishay, sip12202db Datasheet - Page 3

• Manufacturer Part Number: sip12202db
• Description: 5.5-v, 500-khz Synchronous Buck Controller Demo Board
• Manufacturer: Vishay

Demo Board Operation
Choice of Components
The purpose of this demo board is to evaluate the SiP12202
IC chip, therefore there are various optional component
choices and configurations possible.
The board is designed in such a way that tantalum, ceramic,
Document Number: 68629
S-80711-Rev. A, 07-Apr-08
• Connect a 2.7 V to 5.5 V power supply to the “Supply
• Connect a resistor load or electronic load, which is able
• “Power Good” pin is used for the user to see if the output
• If the user wants to shut down the system while it is in
BILL OF MATERIAL
Item
ORDERING INFORMATION
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
Voltage” and “Supply GND” pins.
to handle minimum 25 W with 2.5 V, to the “Output
Voltage” and “Output Ground” pins.
voltage is in regulated range. An external pull-up resistor
is required for this feature to function. An oscilloscope
can be used to check this feature.
operation, an external shutdown signal (lower than
0.15 V, typical) can be connected to the “Compensation/
Shutdown” pin. When this signal becomes high, the
system will be enabled.
Qty
1
1
1
2
3
1
2
4
1
1
1
2
1
1
1
Part Number
SiP12202DB
C5, C6, C16,
Designator
C1, C8, C9
C4, C10
R1, R2
D3, D4
C17
C11
C12
Q1
Q2
R3
R4
R5
C2
C7
D2
U1
L1
Not populated. Use trace
IHLP2525CZER1R5M01
CRCW08056811RF
CRCW08051622RF
594D227X0010D2T
VJ1210V105MXAC
VJ1206V105MXXC
VJ0805Y153MXJC
VJ0805A200KXAC
CRCW0805111RF
Not populated
Not populated
Not populated
SiP12202DM
Part Type
Si7601DN
Si7106DN
as 0 Ω
SS36
Marking
Tantalum, 220 µF, 10 V, 20 %
Ceramic, 15 nF, 16 V, 20 %
Ceramic, 15 nF, 16 V, 20 %
Ceramic, 1 µF, 50 V, 20 %
Ceramic, 1 µF, 25 V, 20 %
Schottky diode, 60 V, 3 A
Resistor, 1 %, 6.81 kΩ
Resistor, 1 %, 16.2 kΩ
Resistor, 1 %, 5.11 kΩ
1.5 µH Power Inductor
P-Ch MOSFET, 20 V
N-Ch MOSFET, 20 V
Diode, MBR540
Description
Resistor, 0 Ω
POWER IC
electrolytic, OSCON or POSCAP capacitors can be used as
the input and output filters (C4, C5, C6, C10, C16, C17),
thus allowing the circuit designer to choose different
capacitors according to cost / performance constraints. The
footprints have been made especially large and versatile to
allow for this capability.
The MOSFET footprints are designed in the same way to
allow SO-8 and PowerPak SO-8 devices to be used. Of
course PowerPAK 1212 package devices can also be used
here.
The inductor footprint is designed to allow for a variety of
different sizes to be inserted.
A DO-214AB (SMC) footprint is left for D2, the optional 3 A
Schottky diode to be populated. If this diode is used it can
help reduce switching noise, bypass extra current from
MOSFET intrinsic diode, and slightly improve system
efficiency. If Si7106DN is used, this diode is required.
The footprint of C7 is included to allow for adding an
additional zero in the feedback compensation, for dealing
with low ESR output capacitors (such as ceramics).
DO-214AB
Footprint
PowerPAK
PowerPAK
MLP33-10
1212-8
1212-8
Temperature Range
594R
0805
0805
0805
1210
1206
0805
0805
IHLP
- 40 to 85 °C
Vishay Siliconix
SiP12202DB
VISHAY/SILICONIX
Manufacturer
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
VISHAY
www.vishay.com
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