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參數(shù)資料
| 型號(hào)： | Si9118 |
| 廠商： | Vishay Intertechnology,Inc. |
| 英文描述： | Programmable Duty Cycle Controller(用于高頻DC-DC轉(zhuǎn)換器的電流型脈寬調(diào)制控制器) |
| 中文描述： | 占空比可編程控制器（用于高頻的DC - DC轉(zhuǎn)換器的電流型脈寬調(diào)制控制器） |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 108K |
| 代理商： | SI9118 |
Si9118/Si9119
Vishay Siliconix
New Product
Document Number: 70815
S-60752—Rev. B, 05 Apr-99
www.Vishay Siliconix.com FaxBack
408-970-5600
1
Programmable Duty Cycle Controller
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
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 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 a 16-pin SOIC package
and is specified over the industrial, D suffix (–40 C to 85 C)
temperature range.
I
CS
+
–
+
–
+
–
FB
Ref
Gen
100 mV
Undervoltage
Lockout
8.6 V
Error
Amplifier
V
CC
+V
IN
4.6 V
23 A
V
REF
–V
IN
–V
IN
I
LIMIT
+
–
4
3
7
16
1
14
5
6
11
10
Substrate
+
–
1.0 – 2.0 V
+
600 mV
PWM
I
MAX
Pulse Skip
–
EN
NI
SS/EN
–
COMP
+
+
–
2
PWM/PSM
R
S
Q
V
(Si9118)
SYNC (Si9119)
12
D
MAX
13
15DR
8
C
OSC
9
R
OSC
9.3 V (V
REG
)
OSC
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SI9118_11 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Programmable Duty Cycle Controller |
| SI9118DB | 功能描述:電流型 PWM 控制器 SI9118 Demo Board RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| SI9118DY | 功能描述:電流型 PWM 控制器 1MHz Prog Controller RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| SI9118DY-E3 | 功能描述:電流型 PWM 控制器 Programmable Duty Cycle Controller RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| SI9118DY-T1 | 功能描述:電流型 PWM 控制器 Programmable Duty Cycle Controller RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
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