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參數(shù)資料
| 型號(hào)： | ISL6523A |
| 廠商： | Intersil Corporation |
| 英文描述： | Adjustable Precision Shunt Regulator 3-SOT-89 0 to 70 |
| 中文描述： | VRM8.5雙雙PWM和線性電源系統(tǒng)控制器 |
| 文件頁(yè)數(shù)： | 1/16頁(yè) |
| 文件大?。?/td> | 408K |
| 代理商： | ISL6523A |
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1
TM
FN9063
ISL6523A
VRM8.5 Dual PWM and Dual Linear Power
System Controller
The ISL6523A provides the power control and protection for
four output voltages in high-performance microprocessor
and computer applications. The IC integrates two PWM
controllers and two linear controllers, as well as the
monitoring and protection functions into a 28-pin SOIC
package. One PWM controller regulates the microprocessor
core voltage with a synchronous-rectified buck converter.
The second PWM controller supplies the computer system’s
AGTL+ 1.2V bus power with a standard buck converter. The
linear controllers regulate power for the 1.5V AGP bus and
the 1.8V power for the chipset core voltage and/or cache
memory circuits.
The ISL6523A includes an Intel VRM8.5 compatible, TTL
5-input digital-to-analog converter (DAC) that adjusts the
microprocessor core-targeted PWM output voltage from
1.050V to 1.825V in 25mV steps. The precision reference
and voltage-mode control provide
±
1% static regulation. The
second PWM controller’s output provides a voltage level of
1.2V with
±
3% accuracy. The linear regulators use external
N-channel MOSFETs or bipolar NPN pass transistors to
provide fixed output voltages of 1.5V
±
3% (V
OUT3
) and 1.8V
±
3% (V
OUT4
).
The ISL6523A monitors all the output voltages. A delayed-
rising VTT (standard buck output) Power Good signal is
issued before the core PWM starts to ramp up. Another
system Power Good signal is issued when the core is within
±
10% of the DAC setting and all other outputs are above
their under- voltage levels. Additional built-in overvoltage
protection for the core output uses the lower MOSFET to
prevent output voltages above 115% of the DAC setting. The
PWM controllers’ overcurrent function monitors the output
current by using the voltage drop across the upper
MOSFET’s r
DS(ON)
, eliminating the need for a current
sensing resistor.
Features
Provides 4 Regulated Voltages
- Microprocessor Core, AGTL+ Bus, AGP Bus Power,
and North/South Bridge Core
Drives N-Channel MOSFETs
Linear Regulator Drives Compatible with both MOSFET
and Bipolar Series Pass Transistors
Simple Single-Loop Control Designs
- Voltage-Mode PWM Control
Fast PWM Converter Transient Response
- High-Bandwidth Error Amplifiers
- Full 0% to 100% Duty Ratios
Excellent Output Voltage Regulation
- Core PWM Output . . . . . . . . . .
±
1% Over Temperature
- All Other Outputs
. . . . . . . . . . . . .±
3% Over Temperature
VRM8.5 TTL-Compatible 5-Bit DAC Microprocessor Core
Output Voltage Selection
- Wide Range . . . . . . . . . . . . . . . . . . . . 1.050V to 1.825V
Power-Good Output Voltage Monitors
- Separate delayed VTT Power Good
Overcurrent Fault Monitors
- Switching Regulators Do Not Require Extra Current
Sensing Elements, Use MOSFET’s r
DS(ON)
Small Converter Size
- Constant Frequency Operation
- 200kHz Internal Oscillator
Applications
Motherboard Power Regulation for Computers
Pinout
ISL6523A (SOIC)
TOP VIEW
Ordering Information
PART NUMBER
TEMP.
RANGE (
o
C)
PACKAGE
PKG.
NO.
ISL6523ACB
0 to 70
28 Ld SOIC
M28.3
ISL6523EVAL1
Evaluation Board
UGATE2
PHASE2
VID3
VID2
OCSET2
VSEN2
SS24
SS13
VSEN4
VCC
PGND
LGATE1
PHASE1
DRIVE3
COMP1
GND
VAUX
DRIVE4
UGATE1
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
PGOOD
VID1
VTTPG
VSEN1
VSEN3
VID0
VID25
OCSET1
FB1
Data Sheet
February 2002
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Intersil (and design) is a trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2002. All Rights Reserved
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ISL6523 | Adjustable Precision Shunt Regulator 3-SOT-23 0 to 70 |
| ISL6523ACB | Adjustable Precision Shunt Regulator 3-SOT-89 0 to 70 |
| ISL6523CB | Adjustable Precision Shunt Regulator 5-SOT-23 -40 to 85 |
| ISL6523CBZ | Adjustable Precision Shunt Regulator 5-SOT-23 -40 to 85 |
| ISL6523CBZ-T | VRM8.5 Dual PWM and Dual Linear Power System Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL6523ACB | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| ISL6523CB | 功能描述:IC CTRLR VRM8.5 PWM DUAL 28-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,000 系列:- 應(yīng)用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應(yīng)商設(shè)備封裝:42-WLP 包裝:帶卷 (TR) |
| ISL6523CB-T | 功能描述:IC CTRLR VRM8.5 PWM DUAL 28-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,000 系列:- 應(yīng)用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應(yīng)商設(shè)備封裝:42-WLP 包裝:帶卷 (TR) |
| ISL6523CBZ | 功能描述:IC CTRLR VRM8.5 PWM DUAL 28-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:43 系列:- 應(yīng)用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:48-QFN（7x7） 包裝:管件 |
| ISL6523CBZ-T | 功能描述:IC CTRLR VRM8.5 PWM DUAL 28-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:43 系列:- 應(yīng)用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:48-QFN（7x7） 包裝:管件 |
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