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| 型号： | Si9114ADY-T1-E3 |
| 厂商： | Vishay Intertechnology,Inc. |
| 英文描述： | High-Frequency Switchmode Controller |
| 中文描述： | 高频开关控制器 |
| 文件页数： | 1/5页 |
| 文件大小： | 80K |
| 代理商： | SI9114ADY-T1-E3 |
Si9114A
Vishay Siliconix
Document Number: 70025
S-42044—Rev. E, 15-Nov-04
www.vishay.com
1
High-Frequency Switchmode Controller
FEATURES
15- to 200-V Input Range
Current-Mode Control
Internal Start-Up Circuit
Latched SHUTDOWN
Soft-Start
1.8-MHz Error Amp
DESCRIPTION
The Si9114A is a BiC/DMOS current-mode pulse width
modulation (PWM) controller IC for high-frequency dc/dc
converters. Single-ended topologies (forward and flyback) can
be implemented at frequencies up to 1 MHz. The oscillator has
an internal divide-by-two that limits the duty ratio to 50%. An
oscillator sync output allows converters to be synchronized in
phase as well as in frequency, in a master/slave configuration.
The output inverter can typically source 500 mA and sink
700 mA. Shoot-through current is all but eliminated to minimize
supply current requirements.
The high-voltage DMOS transistor allows the IC to interface
directly to bus voltages up to 200 V. Other features include a
1.5% accurate voltage reference, 1.8-MHz (min) bandwidth
error amplifier, shutdown logic control, soft-start and
undervoltage lockout circuits.
The Si9114A is available in both standard and lead (Pb)-free
14-pin plastic DIP and SOIC packages, and is specified over
the industrial, D suffix (
40 C to 85 C) temperature range.
FUNCTIONAL BLOCK DIAGRAM
R
+
+
+
+
+
FB
COMPENSATION
OSC
2 V
Ref
Gen
R
S
Q
1.25 V
Undervoltage
Lockout
0.2 V
9.2 V
SS
Error
Amplifier
V
CC
+V
IN
R
OSC
C
OSC
4.6 V
20 A
V
REF
CURRENT
SENSE
V
IN
SHUTDOWN
V
IN
S
Q
NI
V
CC
OSC
Out
Enable
SYNC
+
+
4
3
7
14
1
12
11
2
5
6
13
10
8
9
20 A
Substrate
B 2
DRIVER
OUTPUT
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SI9117 | 制造商:VISHAY 制造商全称:Vishay Siliconix 功能描述:High-Frequency Converter for Telecom Applications |
| SI9117DY | 功能描述:直流/直流开关转换器 1MHz HV Sw Mode Reg RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| SI9117DY-E3 | 功能描述:开关变换器、稳压器与控制器 Hi Freq Converter For Telecom App RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| SI9117DY-T1 | 功能描述:直流/直流开关转换器 Hi Freq Converter For Telecom App RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| SI9117DY-T1-E3 | 功能描述:开关变换器、稳压器与控制器 Hi Freq Converter For Telecom App RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
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