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| 型号： | SI9130CG-E3 |
| 厂商： | Vishay Siliconix |
| 文件页数： | 10/15页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR PWM PIN PROG 28SSOP |
| 标准包装： | 225 |
| 应用： | 控制器，移动式个人电脑 |
| 输入电压： | 5.5 V ~ 30 V |
| 输出数： | 2 |
| 输出电压： | 5V，可编程 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 28-SSOP |
| 包装： | 散装 |
Si9130
Product is End of Life 3/2014
Vishay Siliconix
CS_
1X
REF,
3.3 V
(or Internal
60 kHz
LPF
FB_
5 V Reference)
Summing
Comparator
BST_
R
S
Q
Level
Shift
DH_
LX_
OSC
Slope
Comp
25 mV
4 μA
Minimum Current
(Pulse-Skipping Mode)
V L
Current
Limit
Shoot-
SS_
ON_
30R
3.3 V
1R
Synchronous
0 mV to
100 mV
Through
Control
Rectifier Control
R
Q
S
Level
Shift
V L
DL_
PGND
Figure 3. Si9130 Controller Block Diagram
3.3 V and 5 V Switching Controllers
Each PWM controller on the Si9130 is identical with the
exception of the preset output voltages. The controllers only
share three functional blocks (see Figure 3): the oscillator,
the voltage reference (REF) and the 5 V logic supply (V L ).
The 3.3 V and 5 V controllers are independently enabled with
pins ON 3 and ON 5 , respectively. The PWMs are a direct-
summing type, without the typical integrating error amplifier
along with the phase shift which is a side effect of this type of
topology. Feedback compensation is not needed, as long as
the output capacitance and its ESR requirements are met,
according to the Design Considerations section of this data
sheet.
www.vishay.com
10
The main PWM comparator is an open loop device which is
comprised of three comparators summing four signals: the
feedback voltage error signal, current sense signal, slope-
compensation ramp and voltage reference as shown in
Figure 3. This method of control comes closer to the ideal of
maintaining the output voltage on a cycle-by-cycle basis.
When the load demands high current levels, the controller is
in full PWM mode. Every cycle from the oscillator asserts the
output latch and drives the gate of the high-side MOSFET for
a period determined by the duty cycle (approximately
V OUT /V IN x 100 %) and the frequency.
The high-side switch turns off, setting the synchronous
rectifier latch and 60 ns later, the rectifier MOSFET turns on.
The low-side switch stays on until the start of the next clock
Document Number: 70190
S11-0975-Rev. G, 16-May-11
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 |
|---|---|
| SI9130CG-T1 | 功能描述:电流型 PWM 控制器 Pin-Programmable Dual 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 |
| SI9130CG-T1-E3 | 功能描述:IC CTRLR PWM PIN PROG 28SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:2,000 系列:- 应用:控制器，DSP 输入电压:4.5 V ~ 25 V 输出数:2 输出电压:最低可调至 1.2V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:30-TFSOP（0.173"，4.40mm 宽） 供应商设备封装:30-TSSOP 包装:带卷 (TR) |
| SI9130DB | 功能描述:电流型 PWM 控制器 SI9130 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 |
| SI9130LG | 功能描述:电流型 PWM 控制器 Prog Dual 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 |
| SI9130LG-E3 | 功能描述:电流型 PWM 控制器 Pin-Programmable Dual 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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