Datasheet > ISL6523ACB

ISL6523ACB

更新时间： 2024-11-27 22:57:23

品牌	Logo	应用领域
英特矽尔 - INTERSIL		控制器
页数	文件大小	规格书
16页	397K
描述
VRM8.5 Dual PWM and Dual Linear Power System Controller

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ISL6523ACB 数据手册

ISL6523A

Data Sheet

February 2002

FN9063

VRM8.5 Dual PWM and Dual Linear Power

System Controller

Features

• Provides 4 Regulated Voltages

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.

- 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

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

- 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

provide fixed output voltages of 1.5V ±3% (V

) and 1.8V

OUT3

- Switching Regulators Do Not Require Extra Current

±3% (V

OUT4

Sensing Elements, Use MOSFET’s r

DS(ON)

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

• Small Converter Size

- Constant Frequency Operation

- 200kHz Internal Oscillator

Applications

•

Motherboard Power Regulation for Computers

Pinout

ISL6523A (SOIC)

TOP VIEW

MOSFET’s r

DS(ON)

sensing resistor.

, eliminating the need for a current

UGATE2

PHASE2

VID3

28 VCC

27 UGATE1

26 PHASE1

25 LGATE1

24 PGND

23 OCSET1

22 VSEN1

21 FB1

Ordering Information

VID2

TEMP.

PKG.

NO.

VID1

PART NUMBER RANGE ( C)

PACKAGE

28 Ld SOIC

VID0

ISL6523ACB

0 to 70

M28.3

VID25

PGOOD

VTTPG

ISL6523EVAL1

Evaluation Board

20 COMP1

19 VSEN3

18 DRIVE3

17 GND

OCSET2 10

VSEN2 11

SS24 12

SS13 13

16 VAUX

VSEN4 14

15 DRIVE4

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.

12 3 4 5 6 7...16

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与ISL6523ACB相关器件

型号	品牌	获取价格	描述	数据表
ISL6523CB	INTERSIL	获取价格	VRM8.5 Dual PWM and Dual Linear Power System Controller
ISL6523CB-T	INTERSIL	获取价格	VRM8.5 Dual PWM and Dual Linear Power System Controller
ISL6523CBZ	INTERSIL	获取价格	VRM8.5 Dual PWM and Dual Linear Power System Controller
ISL6523CBZ-T	INTERSIL	获取价格	VRM8.5 Dual PWM and Dual Linear Power System Controller
ISL6523EVAL1	INTERSIL	获取价格	VRM8.5 Dual PWM and Dual Linear Power System Controller
ISL6524	INTERSIL	获取价格	VRM8.5 PWM and Triple Linear Power System Controller
ISL6524A	INTERSIL	获取价格	VRM8.5 PWM and Triple Linear Power System Controller
ISL6524ACB	INTERSIL	获取价格	VRM8.5 PWM and Triple Linear Power System Controller
ISL6524ACB	RENESAS	获取价格	SWITCHING CONTROLLER, 215kHz SWITCHING FREQ-MAX, PDSO28, PLASTIC, MS-013-AE, SOIC-28
ISL6524ACB-T	INTERSIL	获取价格	VRM8.5 PWM and Triple Linear Power System Controller

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