参数资料
| 型号： | NCP5381AMNR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 28/34页 |
| 文件大小： | 0K |
| 描述： | IC BUCK CTLR 2/3/4PHASE 40-QFN |
| 产品变化通告： | Specification Change MSL Updated 13/June/2008 Product Discontinuation 01/Oct/2008 |
| 标准包装： | 2,500 |
| 应用： | 控制器，Intel Pentium? IV |
| 输入电压： | 10.8 V ~ 13.2 V |
| 输出数： | 4 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-VFQFN 裸露焊盘 |
| 供应商设备封装： | 40-QFN（7x7） |
| 包装： | 带卷 (TR) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页当前第28页第29页第30页第31页第32页第33页第34页
NCP5381A
Dynamic VID Testing
The VTT tool provides for VID stepping based on the
Intel Requirements. Select the Dynamic VID option.
Before enabling the test set the lowest VID to 0.5 V or
greater and set the highest VID to a value that is greater than
the lowest VID selection, then enable the test. See Figures
12 through 14.
Design Methodology
Decoupling the V CC Pin on the IC
An RC input filter is required as shown in the V CC pin to
minimize supply noise on the IC. The resistor should be sized
such that it does not generate a large voltage drop between the
12 V supply and the IC. See the schematic values.
Understanding Soft--Start
The controller supports two different startup routines. A
legacy VR10 ramp to the initial VID code, or a VR11 Ramp
to the 1.1 V VID code, with a pause to capture the VID code
then resume ramping to target value based on an internal
slew rate limit. See Figures 15 and 16. The controller is
designed to regulate to the voltage on the SS pin until it
reaches the internal DAC voltage. The soft-- start cap sets
the initial ramp rate using a typical 5.0 m A current. The
typical value to use for the soft-- start cap (SS), is typically
set to 0.01 m F. This results in a ramp time to 1.1 V of 2.2 ms
based on equation 1.
Css ? iss
dtss
dvss
Figure 12. 1.6 to 0.5 Dynamic VID Response
1.1 · V
2.2 · ms
=
dvss
dtss
and iss = 5 · m A
(eq. 1)
Css = 0.01 · m F
Figure 13. Dynamic VID Settling Time Rising
Figure 14. Dynamic VID Settling Time Falling
http://onsemi.com
28
Figure 15. VR11 Startup
Figure 16. VR10 Legacy Startup
相关PDF资料 |
PDF描述 |
|---|---|
| NCP5381MNR2G | IC CTLR BUCK 2/3/4PHASE 40-QFN |
| NCP5382MNR2G | IC BUCK CTLR 2-6PHASE 48-QFN |
| NCP5383MNR2G | IC REG CTRLR BUCK PWM 24-QFN |
| NCP5385MNR2G | IC CTLR BUCK 2/3/4PHASE 40-QFN |
| NCP5386BMNR2G | IC CTLR BUCK 1/2PHASE 32-QFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| NCP5381MNR2G | 功能描述:DC/DC 开关控制器 ANA 2/3/4 PHSE BUCK CNTLR RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| NCP5382 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:2/3/4/5/6 Phase Buck Controller for VR10 and VR11 Pentium IV Processor Applications |
| NCP5382MNR2G | 功能描述:DC/DC 开关控制器 PHASE CONTROLLER 4 5 6 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| NCP5383 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:2 Phase Buck Controller with Integrated Gate Drivers and AVP |
| NCP5383_1 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:2 Phase Buck Controller with Integrated Gate Drivers and AVP |
发布紧急采购，3分钟左右您将得到回复。