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參數(shù)資料
| 型號： | Si9120DY-T1-E3 |
| 廠商： | Vishay Intertechnology,Inc. |
| 英文描述： | Universal Input Switchmode Controller |
| 中文描述： | 通用輸入開關(guān)模式控制器 |
| 文件頁數(shù)： | 1/6頁 |
| 文件大?。?/td> | 85K |
| 代理商： | SI9120DY-T1-E3 |
Si9120
Vishay Siliconix
Document Number: 70006
S-42042—Rev. H, 15-Nov-04
www.vishay.com
1
Universal Input Switchmode Controller
FEATURES
10- to 450-V Input Range
Current-Mode Control
125-mA Output Drive
Internal Start-Up Circuit
Internal Oscillator (1 MHz)
SHUTDOWN and RESET
DESCRIPTION
The Si9120 is a BiC/DMOS integrated circuit designed for use
in low-power, high-efficiency off-line power supplies.
High-voltage DMOS inputs allow the controller to work over a
wide range of input voltages (10- to 450-VDC). Current-mode
PWM control circuitry is implemented in CMOS to reduce
quiescent current to less than 1.5 mA.
A CMOS output driver provides high-speed switching for
MOSFET devices with gate charge, Q
g
, up to 25 nC, enough
to supply 30 W of output power at 100 kHz. These devices,
when combined with an output MOSFET and transformer, can
be used to implement single-ended power converter
topologies (i.e., flyback and forward).
The Si9120 is available in both standard and lead (Pb)-free
16-pin plastic DIP and SOIC packages which are specified to
operate over the industrial temperature range of
40
C to
85
C.
FUNCTIONAL BLOCK DIAGRAM
+
+
+
+
+
FB
COMP
DISCHARGE
OSC
15
14
10
9
8
2 V
Ref
Gen
R
S
Q
R
S
Q
SENSE
4
12
13
Current-Mode
Comparator
C/L
1.2 V
Undervoltage Comparator
RESET
8.1 V
8.6 V
BIAS
Current
Sources
To
Internal
Circuits
11
16
7
1
Comparator
Error
Amplifier
V
REF
V
CC
+V
IN
V
CC
SHUTDOWN
4 V (1%)
Clock (
1
/
2
f
OSC
)
OSC
OUT
OSC
IN
Pre-Regulator/Start-Up
6
5
V
IN
OUTPUT
To
V
CC
Applications information, see AN707 and AN708.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| Si9120 | Universal Input Switchmode Controller(通用輸入電壓范圍10-450V的開關(guān)控制器) |
| Si9121 | High-Voltage, Non-Isolated Buck-Boost Converter for ISDN Digital Phones(用于ISDN數(shù)字電話的高電壓，未隔離的升降壓轉(zhuǎn)換器) |
| SI9122 | DC/DC Half-Bridge Controller |
| SI9122DQ-T1 | 500-kHz Half-Bridge DC-DC Converter With Integrated Secondary Synchronous Rectification Drivers |
| SI9123 | 500-kHz Half-Bridge DC-DC Converter With Integrated Secondary Synchronous Rectification Control |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SI9120DY-T1-E3 | 制造商:Vishay Siliconix 功能描述:Voltage Regulator IC |
| SI9121 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:High-Voltage, Non-Isolated Buck-Boost Converter for ISDN Digital Phones |
| SI9121DB-3 | 功能描述:電源管理IC開發(fā)工具 SI9121 Demo Brd 3.3V RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| SI9121DB-5 | 功能描述:電源管理IC開發(fā)工具 SI9121 Demo Board 5V RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| SI9121DY-3 | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 HV 3.3V Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
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