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| 型号： | SI9118DY-T1-E3 |
| 厂商： | Vishay Siliconix |
| 文件页数： | 1/11页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR FLYBK ISO CM 16SOIC |
| 标准包装： | 2,500 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 1MHz |
| 占空比： | 80% |
| 电源电压： | 10 V ~ 16.5 V |
| 降压： | 无 |
| 升压： | 无 |
| 回扫： | 是 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
Product is End of Life 3/2014
Si9118, Si9119
Vishay Siliconix
Programmable Duty Cycle Controller
DESCRIPTION
The Si9118/Si9119 are a BiC/DMOS current-mode pulse
width modulation (PWM) controller ICs for high-frequency
dc/dc converters. Single-ended topologies (forward and
flyback) can be implemented at frequencies up to 1 MHz.
The controller operates in constant frequency mode during
the full load and automatically switches to pulse skipping
mode under light load to maintain high efficiency throughout
the full load range. The maximum duty cycle is easily
programmed with a resistor divider for optimum control.
The push-pull output driver provides high-speed switching to
external MOSPOWER devices large enough to supply 50 W
of output power. Shoot-through current for internal push-pull
stage is almost eliminated to minimize quiescent supply
current.
The push-pull output driver provides high-speed switching to
external MOSPOWER devices large enough to supply 50 W
of output power. Shoot-through current for internal push-pull
stage is almost eliminated to minimize quiescent supply
current.
The high-voltage DMOS transistor permits direct operation
from bus voltages of up to 200 V. Other features include a
1.5 % accurate voltage reference, 2.7 MHz bandwidth error
amplifier, standby mode, soft-start and undervoltage lockout
circuits.
The Si9118/Si9119 are available in both standard and lead
(Pb)-free packages.
FUNCTIONAL BLOCK DIAGRAM
FEATURES
? 10 to 200 V Input Range
? Current-Mode Control
? Internal Start-Up Circuit
? Buffer Slope Compensation Voltage
? Soft-Start
? 2.7 MHz Error Amp
? 500 mA Output Drive Current
? Light Load Frequency Fold-Back
? Low Quiescent Current
? Programmable Maximum Duty Cycle, with 80 % as
Default
LIMIT
CS
SY N C (Si9119)
MAX
5
6
10
11
2
12
13
Error
N I
4
Amplifier
–
+
1.0 - 2.0 V
+ –
–
+
P W M
OSC
9
8
R OSC
C OSC
V REF
3
Ref
Gen
+ E N
SS/E N
7
4.6 V
23μA
100 m V
600 m V
–
+
–
P u lse Skip
I MAX
R
S
Q
15
14
DR
- V I N
– V I N
S ub strate
V CC
16
+ V I N
1
–
Document Number: 70815
S11-0975–Rev. E, 16-May-11
–
+
–
+
+
8 .6 V
9.3 V ( V REG )
Under v oltage
Locko u t
www.vishay.com
1
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SI9119 | 制造商:VISHAY 制造商全称:Vishay Siliconix 功能描述:Programmable Duty Cycle Controller |
| SI9119DB | 功能描述:电流型 PWM 控制器 SI9119 Demo Board RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| SI9119DY | 功能描述:电流型 PWM 控制器 1MHz Prog Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| SI9119DY-E3 | 功能描述:电流型 PWM 控制器 Programmable Duty Cycle Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| SI9119DY-T1 | 功能描述:电流型 PWM 控制器 Programmable Duty Cycle Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
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