SI9130DB [VISHAY]
5- and 3.3-V Step-Down Synchronous Converters; 5和3.3 -V降压型同步转换器
| 型号： | SI9130DB |
| 厂家： | 
VISHAY |
| 描述： | 5- and 3.3-V Step-Down Synchronous Converters |
| 文件： | 总4页 (文件大小：151K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Si9130DB
Vishay Siliconix
Si9130DB
Si9130 Demonstration Board
FEATURES
• 5- and 3.3-V Step-Down Synchronous Converters
• Less than 500-µA Quiescent Current
• 25-µA Shutdown Current
• 5.5- to 30-V Input Operating Range
DESCRIPTION
The Si9130 Dual-Output Power-Supply Controller for
Notebook Computers is a system level integration of two step-
down controllers with micropower 5- and 3.3-V linear
regulators. The controllers perform high efficiency conversion
of the battery pack energy (typically 12 V) or the output of an
ac-to-dc wall converter (typically 18 V to 24 V dc) to 5- and
3.45-V nominal output. Grounding pin 3.6 ADJ while leaving
3.45 ADJ open delivers 3.6-V nominal ouput.
On the Demo Board, the Si9130 is configured as a complete
system, ready for operation. It takes 5.5- to 30-V in, and
produces regulated 5 V at any current from no load to 3 A,
and 3.3 V out at any current from no load to 3 A. Included in
this document are the Bill of Materials, Demo Board
Schematic, and PCB layout.
3.3-V system supply voltages.
The micropower linear
regulator can be used to keep power management and back-
up circuitry alive during the shutdown of the step-down
converters. The 3.3-V output is adjustable to 3.3 V, 3.45 V or
3.6 V by programming control pins 3.45 ADJ and 3.6 ADJ.
Leaving both pins open results in 3.3-V nominal output.
Grounding pin 3.45 ADJ while leaving 3.6 ADJ open delivers
The demonstration board layout is available in Gerber file
format. Please contact your VISHAY sales representative or
distributor for a copy.
ORDERING INFORMATION: PART NUMBER Si9130DB
POWER-UP CHECK LIST—INSTALLED IN VRM MOTHER BOARD SOCKET
1. Start by setting the control switches located in the bottom
right corner of the Demo Board. Set the top switch to the
left, setting the switching frequency to 200 kHz (to the right
is 300 kHz). Set the second switch down to the right,
turning the 5-V converter on (to the left is off). Set the
third switch down to the right, turning the 3.3-V converter
on (to the left is off). Set the bottom switch to the right,
allowing the PWM to operate (to the left is shutdown).
2. Attach an electronic load set in resistive mode to the 3.3-V
output pins. Set the current to 100 mA. Alternatively, you
can use a resistor of value 33 Ω, 1 W.
the time base to 500 nsec/div. Set the 5-V output current
on the electronic load to 1 A. Set the input power supply to
16 V. Alternatively, first turn off the input power supply, and
replace the 50-W resistor with a 5-Ω, 10-W resistor, and
then turn the input power supply back on, setting it to 16 V.
7. This step should be performed only if an electronic load is
being used. Set the input voltage to 15 V. Remove the
second probe (the one attached to pin 17 of the Si9130), or
turn off the channel displaying it. Place a current probe
around the wire leading from the 5-V output to the
electronic load, and set the oscilloscope and amplifier so
that it will display approximately 2 A/div.
Set the
3. Attach an electronic load set in resistive mode to the 5-V
output pins. Set the current to 100 mA. Alternatively, you
can use a resistor of value 50 Ω, 1 W.
4. Attach a 10-V supply and ground to the pins on the top side
of the board. It is best to use a separate wire from the
supply’s ground to each of the Demo Board’s ground pins,
because of the high currents at low input voltages.
5. Take an oscilloscope probe, and place the ground on the
5-V GND pin, and the probe on the 5-V pin. Set the
vertical scale for this channel at ac coupled at 50 mV/div.
Take a second probe, and place the ground on the 5-V
GND pin, and the probe on pin 17 (LX5) of the Si9130. Set
this channel at dc coupled 2 V/div. Set the time base at
200 µsec/div.
oscilloscope time base back to 200 µsec/div. Set the 3.3-V
electronic load to have a constant 1-A load. Now set up
the 5-V electronic load so that it cycles between 100 mA
and 3 A at approximately 1 kHz (1 msec period).
8. This step should be performed only if an electronic load is
being used. Set the 5-V electronic load back to a constant
1-A current. Remove the voltage probe from the 5-V
output. Move the ground of the probe onto the GND pin of
the 3.3-V output, and the probe onto the 3.3-V output pin.
Remove the current probe from the 5-V output wire, and
place it around the wire leading from the 3.3-V output to
the electronic load. Now set up the 3.3-V electronic load
so that it cycles between 100 mA and 3 A at approximately
1 kHz (1 msec period).
6. Leave the probes in place. Change the scale on the
second probe (the one attached to pin 17) to 10 V/div, and
FaxBack 408-970-5600, request 70725
www.siliconix.com
10-Feb-97
1
Si9130DB
Vishay Siliconix
FIGURE 1. Top Silkscreen
FIGURE 2. Top Layer
FIGURE 3. Bottom Layer
10-Feb-97
2
FaxBack 408-970-5600, request 70725
www.siliconix.com
Si9130DB APPLICATION CIRCUIT
Si9130DB
Vishay Siliconix
BILL OF MATERIAL FOR Si9130 DUAL-OUTPUT POWER SUPPLY
Reference
Designators
Part Used
Part Type
Description/Part Number
Pattern
Manufacturer
1
2
3
4
5
1
2
4
1
2
U1
Si9130
10 µH
D-O PWR Supply, Si9130
Inductor, 10 µH, CRD125-100
N-Channel MOSFET, Si9410DY
SW-SPST
SSOP-28
CDR125-100
SO-8
Vishay Siliconix
Sumida
L1, L2
N1-N4
SW1
Si9410DY
SPST
Vishay Siliconix
Multi-Source
Nikon
DIP-4
D1, D3
1N5819
Diode, 1N5819
SOD-87
Central
Semiconductor
6
1
CR2
CMPD2836
Diode, CMPD2836
SOT-23
7
8
2
6
1
1
1
R1, R2
R3-R6
R9
0.025 Ω, 1%
1 MΩ
Resistor, LR2010-01-R025F
Resistor, CRCW0805105JRT1
Resistor, CRCW0805102JRT1
Resistor, (Open)
2010
0805
0805
0805
0805
IRC
Vishay Dale
Vishay Dale
Multi-Source
Vishay Dale
9
1 kΩ
10
11
R10
Open
R11
100 Ω
Resistor, CRCW0805101JRT1
Capacitor, Tantalum,
595D336X0035SR
12
13
2
1
C1, C10
C2
33 µF, 35 V
4.7 µF, 6 V
R
Vishay Sprague
AVX
Capacitor, Ceramic,
1206YG475ZAT
1206
Capacitor, Tantalum,
TAJA105M025
14
15
16
2
2
1
C3
1 µF, 20 V
0.1 µF, 16 V
330 µF, 6 V
A
0805
E
AVX
Vishay Vitramon
AVX
C4, C5
Capacitor, VJ0805Y104KXXAT
Capacitor, Tantalum,
TPSE337M006R0100
C6, C7, C11, C12
17
18
2
1
C8, C9
C13
0.01 µF, 16 V
0.1 µF, 35 V
Capacitor, VJ0805Y103KXXAT
Capacitor, VJ0805Y104KXAAT
0805
0805
Vishay Vitramon
Vishay Vitramon
10-Feb-97
4
FaxBack 408-970-5600, request 70725
www.siliconix.com
相关型号：
©2020 ICPDF网 联系我们和版权申明