ADP3186电源管理芯片
上传者:孙毅|上传时间:2015-05-10|密次下载
ADP3186电源管理芯片
主板
5-Bit Programmable 2-/3-/4-Phase
FEATURES
Selectable 2-, 3-, or 4-phase operation at up to 1 MHz per phase
±1% worst-case differential sensing error over temperature Logic-level PWM outputs for interface to external high power drivers
Active current balancing between all output phases
Built-in power good/crowbar blanking supports on-the-fly VID code changes
5-bit digitally programmable 0.8 V to 1.55 V output
Programmable short-circuit protection with programmable latch-off delay
APPLICATIONS
Desktop PC power supplies for AMD Opteron? processors VRM modules
GENERAL DESCRIPTION
The ADP3186 is a highly efficient multiphase synchronous buck switching regulator controller optimized for converting a 12 V main supply into the core supply voltage required by high performance AMD processors. It uses an internal 5-bit DAC to read a voltage identification (VID) code directly from the pro-cessor, which is used to set the output voltage between 0.8 V and 1.55 V. It uses a multimode PWM architecture to drive the logic-level outputs at a programmable switching frequency that can be optimized for VR size and efficiency. The phase relation-ship of the output signals can be programmed to provide 2-, 3-, or 4-phase operation, allowing the construction of up to four complementary buck switching stages.
The ADP3186 includes programmable no-load offset and slope functions to adjust the output voltage as a function of the load current, so that it is always optimally positioned for a system transient. The ADP3186 also provides accurate and reliable short-circuit protection, adjustable current limiting, and a power good output that accommodates on-the-fly output voltage changes requested by the CPU.
The ADP3186 is specified over the commercial temperature range of 0°C to 85°C and is available in 28-lead TSSOP and QSOP packages.
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners.
Synchronous Buck Controller
ADP3186
FUNCTIONAL BLOCK DIAGRAM
内容需要下载文档才能查看PWM1
PWM2
PWM3
PWM4
SW1
SW2SW3
SW4
CSSUM
CSREF
CSCOMP
FB
1
00-0-41940Figure 1.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.Tel: 781.329.4700 http://wendang.chazidian.com Fax: 781.461.3113 ©2006 Analog Devices, Inc. All rights reserved.
主板
ADP3186
TABLE OF CONTENTS
Features..............................................................................................1 Applications.......................................................................................1 General Description.........................................................................1 Functional Block Diagram..............................................................1 Specifications.....................................................................................3 Test Circuits.......................................................................................5 Absolute Maximum Ratings............................................................6 ESD Caution..................................................................................6 Pin Configuration and Function Descriptions.............................7 Typical Performance Characteristics.............................................8 Theory of Operation........................................................................9 Start-Up Sequence........................................................................9 Master Clock Frequency..............................................................9 Output Voltage Differential Sensing..........................................9 Output Current Sensing..............................................................9 Active Impedance Control Mode.............................................10 Current Control Mode and Thermal Balance........................10 Voltage Control Mode................................................................10 Soft Start......................................................................................10 Current Limit, Short-Circuit, and Latch-Off Protection......11 Dynamic VID..............................................................................11 Power Good Monitoring...........................................................12 Output Crowbar.........................................................................12 Output Enable and UVLO........................................................12 Application Information................................................................14
Setting the Clock Frequency.....................................................14 Soft Start and Current Limit Latch-Off Delay Times............14 Inductor Selection......................................................................14 Designing an Inductor...............................................................15 Selecting a Standard Inductor..............................................15 Output Droop Resistance..........................................................15 Inductor DCR Temperature Correction.................................16 Output Offset..............................................................................16 COUT Selection.............................................................................17 Power MOSFETs.........................................................................17 Ramp Resistor Selection............................................................18 COMP Pin Ramp.......................................................................19 Current Limit Setpoint..............................................................19 Feedback Loop Compensation Design....................................19 CIN Selection and Input Current di/dt Reduction..................20 Tuning Procedure.......................................................................21 DC Loadline Setting..............................................................21 AC Loadline Setting...............................................................21 Initial Transient Setting.........................................................22 Layout and Component Placement.........................................22 General Recommendations..................................................22 Power Circuitry Recommendations....................................23 Signal Circuitry Recommendations....................................23 Outline Dimensions.......................................................................24 Ordering Guide..........................................................................24
REVISION HISTORY
3/06—Rev. 0 to Rev. A
Updated ADP3110 to ADP3110A.................................Universal Changes to Table 1..........................................................................3 Added QSOP Package..................................................................24 Updated Ordering Guide.............................................................24 8/04—Revision Sp0: Initial Version
Rev. A | Page 2 of 24
主板
ADP3186
SPECIFICATIONS
VCC = 12 V, FBRTN = GND, TA = 0°C to 85°C, unless otherwise specified.1
Table 1. Unit ERROR AMPLIFIER Output Voltage Range2VCOMP 0.5 FB
0.8 V Output Referenced to FBRTN,
CSSUM = CSCOMP, Figure 2
TSSOP 0.7920 QSOP 0.7880 1.175 V Output Referenced to FBRTN,
CSSUM = CSCOMP, Figure 2
TSSOP 1.1633 QSOP 1.1574 1.55 V Output Referenced to FBRTN,
CSSUM = CSCOMP, Figure 2
TSSOP 1.5345 QSOP 1.5268 Line Regulation VCC = 10 V to 14 V 0.05 % ΔVFB
Input Bias Current IFBμA
FBRTN Current IFBRTNμA
Output Current IO(ERR)FB Forced to VOUT – 3% 500 μA
Gain Bandwidth Product GBW(ERR)COMP = FB 20 MHz
Slew Rate CCOMP = 10 pF 25 V/μs
VID INPUTS
Input Low Voltage VIL(VID) V
Input High Voltage VIH(VID) 1.5 Input Current, Input Voltage Low IIL(VID)VID(X) = 0 V 20 26 μA
Pull-Up Resistance RVID 100 120 kΩ
Internal Pull-Up Voltage V
VID Transition Delay Time2 VID code change to FB change 400 ns
400 No CPU Detection Turn-Off Delay VID code change to 11111 to PWM
2Timegoing low
OSCILLATOR 2Frequency RangefOSCMHz Frequency Variation fPHASETA = 25°C, RT = 250 kΩ, 4-phase 155 200 245 kHz
TA = 25°C, RT = 115 kΩ, 4-phase 400 kHz
TA = 25°C, RT = 75 kΩ, 4-phase 600 kHz
Output Voltage VRTRT = 100 kΩ to GND 1.9 2.0 2.1 V
Timing Resistor Value kΩ
RAMPADJ Output Voltage VRAMPADJRAMPADJ – FB ?50 +50 mV
RAMPADJ Input Current Range IRAMPADJμA
CURRENT SENSE AMPLIFIER Offset Voltage VOS(CSA)CSSUM – CSREF, Figure 3
TSSOP ?3 QSOP ?3.5 Input Bias Current IBIAS(CSSUM) ?50 Gain Bandwidth Product GBW(CSA) 10 Slew Rate CCSCOMP = 10 pF 10 V/μs
Input Common-Mode Range CSSUM and CSREF 0 2.7 V
Rev. A | Page 3 of 24
主板
ADP3186
Unit Positioning Accuracy Figure 4ΔVFBOutput Voltage Range 0.05 2.7 V Output Current ICSCOMPμA CURRENT BALANCE CIRCUIT Common-Mode Range VSW(X)CM ?600 Input Resistance RSW(X)SW(X) = 0 V Input Current ISW(X)SW(X) = 0 V 4 7 10 μA Input Current Matching SW(X) = 0 V ?5 +5 % ΔISW(X)CURRENT LIMIT Output Voltage
Normal Mode VILIMIT(NM)EN > 2.0 V, RILIMIT = 250 kΩ Shutdown Mode VILIMIT(SD)EN < 0.8 V, IILIMIT = ?100 μA Output Current, Normal Mode IILIMIT(NM)EN > 2.0 V, RILIMIT = 250 kΩ Maximum Output Current2Current Limit Threshold Voltage VCLVCSREF – VCSCOMP, RILIMIT = 250 kΩ Current Limit Setting Ratio VCL/IILIMITDELAY Normal Mode Voltage VDELAY(NM)RDELAY = 250 kΩ DELAY Overcurrent Threshold VDELAY(OC)RDELAY = 250 kΩ Latch-Off Delay Time tDELAYRDELAY = 250 kΩ, CDELAY = 12 nF SOFT START Output Current, Soft Start Mode IDELAY(SS)During startup, DELAY < 2.8 V Soft Start Delay Time tDELAY(SS)RDELAY = 250 kΩ, CDELAY = 12 nF,
VID code = 011111
ENABLE INPUT Input Low Voltage VIL(EN) Input High Voltage VIH(EN) Input Current, Input Voltage Low IIL(EN)EN = 0 V POWER GOOD Undervoltage Threshold Overvoltage Threshold Output Low Voltage
OFF_State Leakage Current Power Good Delay Time VID Code Changing VID Code Static Crowbar Trip Point Crowbar Reset Point Crowbar Delay Time VID Code Changing VID Code Static PWM OUTPUTS
Output Low Voltage Output High Voltage SUPPLY DC Supply Current
UVLO Threshold Voltage UVLO Hysteresis
12
2.9 3 3.1 V mV 12 μA 60 μA 105 125 145 mV 10.4 mV/μA 2.9 3 3.1 V 1.7 1.8 1.9 V 1.5 ms
15 20 25 μA 1 V 2.0 ?1 +1 μA
?200 ?300 ?400 mV 200 300 400 mV 150 400 mV μA
100 250 μs 200 ns
100 250 μs 400 ns 4.0 5 V 5 10 mA
VPWRGD(UV)VPWRGD(OV)VOL(PWRGD)
VCROWBAR tCROWBAR
VOL(PWM)VOH(PWM)
Relative to nominal DAC output Relative to nominal DAC output IPWRGD(SINK) = 4 mA VCSREF = VDAC
Overvoltage to PWM going low
IPWM(SINK) = ?400 μA IPWM(SOURCE) = +400 μA
VUVLOVCC rising
All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC).
Guaranteed by design or bench characterization, not production tested.
Rev. A | Page 4 of 24
主板
TEST CIRCUITS
内容需要下载文档才能查看 内容需要下载文档才能查看2
内容需要下载文档才能查看
0-0-41940
Figure 2. Closed-Loop Output Voltage Accuracy
39k1k1.0V
3
00-0-41940
Figure 3. Current Sense Amplifier, VOS
Rev. A | Page 5 of 24
ADP3186
200k1.0V
Figure 4. Positioning Voltage
下载文档
热门试卷
- 2016年四川省内江市中考化学试卷
- 广西钦州市高新区2017届高三11月月考政治试卷
- 浙江省湖州市2016-2017学年高一上学期期中考试政治试卷
- 浙江省湖州市2016-2017学年高二上学期期中考试政治试卷
- 辽宁省铁岭市协作体2017届高三上学期第三次联考政治试卷
- 广西钦州市钦州港区2016-2017学年高二11月月考政治试卷
- 广西钦州市钦州港区2017届高三11月月考政治试卷
- 广西钦州市钦州港区2016-2017学年高一11月月考政治试卷
- 广西钦州市高新区2016-2017学年高二11月月考政治试卷
- 广西钦州市高新区2016-2017学年高一11月月考政治试卷
- 山东省滨州市三校2017届第一学期阶段测试初三英语试题
- 四川省成都七中2017届高三一诊模拟考试文科综合试卷
- 2017届普通高等学校招生全国统一考试模拟试题(附答案)
- 重庆市永川中学高2017级上期12月月考语文试题
- 江西宜春三中2017届高三第一学期第二次月考文科综合试题
- 内蒙古赤峰二中2017届高三上学期第三次月考英语试题
- 2017年六年级(上)数学期末考试卷
- 2017人教版小学英语三年级上期末笔试题
- 江苏省常州西藏民族中学2016-2017学年九年级思想品德第一学期第二次阶段测试试卷
- 重庆市九龙坡区七校2016-2017学年上期八年级素质测查(二)语文学科试题卷
- 江苏省无锡市钱桥中学2016年12月八年级语文阶段性测试卷
- 江苏省无锡市钱桥中学2016-2017学年七年级英语12月阶段检测试卷
- 山东省邹城市第八中学2016-2017学年八年级12月物理第4章试题(无答案)
- 【人教版】河北省2015-2016学年度九年级上期末语文试题卷(附答案)
- 四川省简阳市阳安中学2016年12月高二月考英语试卷
- 四川省成都龙泉中学高三上学期2016年12月月考试题文科综合能力测试
- 安徽省滁州中学2016—2017学年度第一学期12月月考高三英语试卷
- 山东省武城县第二中学2016.12高一年级上学期第二次月考历史试题(必修一第四、五单元)
- 福建省四地六校联考2016-2017学年上学期第三次月考高三化学试卷
- 甘肃省武威第二十三中学2016—2017学年度八年级第一学期12月月考生物试卷
网友关注
- 环境创设
- 忙着
- 学校简介 (1)
- 六月研讨论文哲学教育在培养新型政工人才中的作用
- 高校大学生之交通安全倡议书
- 中国石油大学(北京)
- 云南大学2014年招收特岗教师在职攻读硕士学位研究生招生简章_云南大学研究生院
- 实战化教学
- 看,梦想一家人 王子辰
- 河南教育学院信息技术系2015年单独招生简章
- 理工学院拟建文化品牌项目
- 1711所驻青高校今年增17个本科专业 好专业不少
- 活动类
- 圈子幼儿园简介
- 2015年省委党校招生简章 (1)
- 华南理工大学网络教育学院土木工程论文
- 抗日战争
- 自主招生事项
- 军事高技术
- 幼儿园管理机构
- 儿童必读的国学经典
- 父母常用英语Parents speaking English
- 帕劳——太平洋的世外桃源,美如童话
- 2013年军事理论考试题库(2)
- 少儿版万圣节
- 崛起----腾飞,梦想托举未来
- 2015重庆商务职业学院招聘
- 军训总结
- 家风 家训 故事
- 万圣节教案材料
网友关注视频
- 【部编】人教版语文七年级下册《泊秦淮》优质课教学视频+PPT课件+教案,辽宁省
- 沪教版牛津小学英语(深圳用) 四年级下册 Unit 2
- 沪教版八年级下册数学练习册21.3(2)分式方程P15
- 第五单元 民族艺术的瑰宝_15. 多姿多彩的民族服饰_第二课时(市一等奖)(岭南版六年级上册)_T129830
- 沪教版牛津小学英语(深圳用) 六年级下册 Unit 7
- 冀教版小学数学二年级下册第二周第2课时《我们的测量》宝丰街小学庞志荣
- 二次函数求实际问题中的最值_第一课时(特等奖)(冀教版九年级下册)_T144339
- 北师大版数学四年级下册3.4包装
- 小学英语单词
- 冀教版小学英语四年级下册Lesson2授课视频
- 沪教版八年级下册数学练习册21.4(1)无理方程P18
- 外研版英语三起6年级下册(14版)Module3 Unit2
- 【部编】人教版语文七年级下册《老山界》优质课教学视频+PPT课件+教案,安徽省
- 化学九年级下册全册同步 人教版 第25集 生活中常见的盐(二)
- 《空中课堂》二年级下册 数学第一单元第1课时
- 冀教版小学数学二年级下册第二单元《有余数除法的竖式计算》
- 【获奖】科粤版初三九年级化学下册第七章7.3浓稀的表示
- 三年级英语单词记忆下册(沪教版)第一二单元复习
- 第五单元 民族艺术的瑰宝_16. 形形色色的民族乐器_第一课时(岭南版六年级上册)_T1406126
- 【部编】人教版语文七年级下册《逢入京使》优质课教学视频+PPT课件+教案,辽宁省
- 北师大版八年级物理下册 第六章 常见的光学仪器(二)探究凸透镜成像的规律
- 冀教版小学数学二年级下册第二单元《余数和除数的关系》
- 外研版英语三起5年级下册(14版)Module3 Unit1
- 北师大版数学四年级下册第三单元第四节街心广场
- 冀教版小学英语五年级下册lesson2教学视频(2)
- 六年级英语下册上海牛津版教材讲解 U1单词
- 飞翔英语—冀教版(三起)英语三年级下册Lesson 2 Cats and Dogs
- 3.2 数学二年级下册第二单元 表内除法(一)整理和复习 李菲菲
- 外研版英语七年级下册module1unit3名词性物主代词讲解
- 【部编】人教版语文七年级下册《泊秦淮》优质课教学视频+PPT课件+教案,湖北省
精品推荐
- 2016-2017学年高一语文人教版必修一+模块学业水平检测试题(含答案)
- 广西钦州市高新区2017届高三11月月考政治试卷
- 浙江省湖州市2016-2017学年高一上学期期中考试政治试卷
- 浙江省湖州市2016-2017学年高二上学期期中考试政治试卷
- 辽宁省铁岭市协作体2017届高三上学期第三次联考政治试卷
- 广西钦州市钦州港区2016-2017学年高二11月月考政治试卷
- 广西钦州市钦州港区2017届高三11月月考政治试卷
- 广西钦州市钦州港区2016-2017学年高一11月月考政治试卷
- 广西钦州市高新区2016-2017学年高二11月月考政治试卷
- 广西钦州市高新区2016-2017学年高一11月月考政治试卷
分类导航
- 互联网
- 电脑基础知识
- 计算机软件及应用
- 计算机硬件及网络
- 计算机应用/办公自动化
- .NET
- 数据结构与算法
- Java
- SEO
- C/C++资料
- linux/Unix相关
- 手机开发
- UML理论/建模
- 并行计算/云计算
- 嵌入式开发
- windows相关
- 软件工程
- 管理信息系统
- 开发文档
- 图形图像
- 网络与通信
- 网络信息安全
- 电子支付
- Labview
- matlab
- 网络资源
- Python
- Delphi/Perl
- 评测
- Flash/Flex
- CSS/Script
- 计算机原理
- PHP资料
- 数据挖掘与模式识别
- Web服务
- 数据库
- Visual Basic
- 电子商务
- 服务器
- 搜索引擎优化
- 存储
- 架构
- 行业软件
- 人工智能
- 计算机辅助设计
- 多媒体
- 软件测试
- 计算机硬件与维护
- 网站策划/UE
- 网页设计/UI
- 网吧管理