Datasheet > ISL6524EVAL1

ISL6524EVAL1

更新时间： 2024-11-27 22:15:59

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	442K
描述
VRM8.5 PWM and Triple Linear Power System Controller

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ISL6524EVAL1 数据手册

ISL6524

Data Sheet

April 18, 2005

FN9015.3

VRM8.5 PWM and Triple Linear Power

Sys tem Controller

Features

• Provides 4 Regulated Voltages

- Microprocessor Core, AGTL+ Bus, AGP Bus Power,

and North/South Bridge Core

The ISL6524 provides the power control and protection for

four output voltages in high-performance microprocessor

and computer applications. The IC integrates one PWM

controller and three linear controllers, as well as the

monitoring and protection functions into a 28-pin SOIC

package. The PWM controller regulates the microprocessor

core voltage with a synchronous-rectified buck converter.

One linear controller supplies the computer system’s AGTL+

1.2V bus power. The other two linear controllers regulate

power for the 1.5V AGP bus and the 1.8V power for the chip

set core voltage and/or cache memory circuits.

• Drives N-Channel MOSFETs

• Linear Regulator Drives Compatible with both MOSFET

and Bipolar Series Pass Transistors

• Simple Single-Loop Control Design

- Voltage-Mode PWM Control

• Fast PWM Converter Transient Response

- High-Bandwidth Error Amplifier

- Full 0% to 100% Duty Ratio

The ISL6524 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 linear

regulators use external N-channel MOSFETs or bipolar NPN

pass transistors to provide fixed output voltages of 1.2V ±3%

• 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

), 1.5V ±3% (V

) and 1.8V ±3% (V ).

OUT2

OUT3

OUT4

• Power-Good Output Voltage Monitors

- Separate delayed VTT Power Good

The ISL6524 monitors all the output voltages. A delayed-

rising VTT (V output) Power Good signal is issued

OUT2

• Overcurrent Fault Monitor

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

- Switching Regulator Doesn’t Require Extra Current

Sensing Element, Uses MOSFET’s r

DS(ON)

• Small Converter Size

- Constant Frequency Operation

- 200kHz Internal Oscillator

controllers’ overcurrent function monitors the output current

by using the voltage drop across the upper MOSFET’s

DS(ON)

• Pb-Free Available (RoHS Compliant)

Applications

, eliminating the need for a current sensing resistor.

•

Motherboard Power Regulation for Computers

Pinout

ISL6524 (SOIC) TOP VIEW

Ordering Information

DRIVE2

28 VCC

TEMP.

PKG.

PART NUMBER

ISL6524CB*

RANGE (°C)

0 to 70

PACKAGE

28 Ld SOIC

DWG. #

FIX

VID3

27 UGATE

26 PHASE

25 LGATE

24 PGND

23 OCSET

M28.3

ISL6524CBZ*

(See Note)

0 to 70

28 Ld SOIC

(Pb-free)

VID2

VID1

ISL6524CBZA*

(See Note)

0 to 70

28 Ld SOIC

(Pb-free)

M28.3

VID0

VID25

PGOOD

VTTPG

VSEN1

ISL6524EVAL1

Evaluation Board

21 FB

*Add “-T” suffix for tape and reel.

20 COMP

19 VSEN3

18 DRIVE3

17 GND

NOTE: Intersil Pb-free products employ special Pb-free material

sets; molding compounds/die attach materials and 100% matte tin

plate termination finish, which are RoHS compliant and compatible

with both SnPb and Pb-free soldering operations. Intersil Pb-free

products are MSL classified at Pb-free peak reflow temperatures that

meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

FAULT/RT 10

VSEN2 11

SS24 12

SS13 13

16 VAUX

15 DRIVE4

VSEN4 14

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-352-6832 | Intersil (and design) is a registered trademark of Intersil Americas Inc.

All other trademarks mentioned are the property of their respective owners.

12 3 4 5 6 7...16

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与ISL6524EVAL1相关器件

型号	品牌	获取价格	描述	数据表
ISL6525	INTERSIL	获取价格	Buck and Synchronous-Rectifier Pulse-Width Modulator (PWM) Controller
ISL6525_04	INTERSIL	获取价格	Buck and Synchronous-Rectifier Pulse-Width Modulator (PWM) Controller
ISL6525CB	RENESAS	获取价格	SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PDSO14, PLASTIC, MS-012-AB, SOIC-14
ISL6525CB	INTERSIL	获取价格	Buck and Synchronous-Rectifier Pulse-Width Modulator (PWM) Controller
ISL6525CB	ROCHESTER	获取价格	SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PDSO14, PLASTIC, MS-012-AB, SOIC-14
ISL6525CB-T	RENESAS	获取价格	SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PDSO14, PLASTIC, MS-012-AB, SOIC-14
ISL6525CB-T	ROCHESTER	获取价格	SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PDSO14, PLASTIC, MS-012-AB, SOIC-14
ISL6525CBZ	INTERSIL	获取价格	Buck and Synchronous-Rectifier Pulse-Width Modulator (PWM) Controller
ISL6525CBZ	ROCHESTER	获取价格	SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO14, LEAD FREE, PLASTIC, MS-012-AB,
ISL6525CBZ-T	RENESAS	获取价格	Buck and Synchronous-Rectifier Pulse-Width Modulator (PWM) Controller; SOIC14; Temp Range:

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