ISL6523CBZ datasheet, PDF - EEWORLD Datasheet

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ISL6523CBZ: DescriptionSwitching Controllers 4 IN 1 CNTRLR VRM 8 5 DAC 28PIN2; Categorysemiconductor Power management; File Size407KB，16 Pages; ManufacturerIntersil ( Renesas ); Websitehttp://www.intersil.com/cda/home/

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ISL6523CBZ Overview

Switching Controllers 4 IN 1 CNTRLR VRM 8 5 DAC 28PIN2

ISL6523CBZ Parametric

Parameter Name	Attribute value
Product Category	Switching Controllers
Manufacturer	Intersil ( Renesas )
RoHS	Details
Number of Outputs	4 Output
Switching Frequency	215 kHz
Duty Cycle - Max	100 %
Output Voltage	1.05 V to 1.825 V, 1.2 V, 1.5 V, 1.8 V
Output Current	25 A
Minimum Operating Temperature	0 C
Maximum Operating Temperature	+ 70 C
Package / Case	SOIC-28 Wide
Packaging	Tube
Height	2.35 mm (Max)
Length	18.1 mm (Max)
Operating Supply Voltage	12 V
Factory Pack Quantity	26
Type	Voltage Mode PWM Controllers
Width	7.6 mm (Max)
Unit Weight	0.027937 oz

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ISL6523

Data Sheet

July 2004

FN9024.2

VRM8.5 Dual PWM and Dual Linear Power

System Controller

The ISL6523 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 ISL6523 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%

OUT3

) and 1.8V

±3%

OUT4

The ISL6523 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

• Pb-free available

Applications

• Motherboard Power Regulation for Computers

Pinout

ISL6523 (SOIC)

TOP VIEW

UGATE2 1

PHASE2 2

VID3 3

VID2 4

28 VCC

27 UGATE1

26 PHASE1

25 LGATE1

24 PGND

23 OCSET1

22 VSEN1

21 FB1

20 COMP1

19 VSEN3

18 DRIVE3

17 GND

16 VAUX

15 DRIVE4

Ordering Information

PART NUMBER

ISL6523CB

ISL6523CBZ

(See Note)

ISL6523EVAL1

TEMP.

RANGE (

0 to 70

PACKAGE

28 Ld SOIC

(Pb-free)

PKG.

DWG. #

M28.3

VID1 5

VID0 6

VID25 7

PGOOD 8

VTTPG 9

OCSET2 10

VSEN2 11

SS24 12

SS13 13

VSEN4 14

Evaluation Board

*Add “-T” suffix to part number for tape and reel packaging.

NOTE: Intersil Pb-free products employ special Pb-free material sets; molding

compounds/die attach materials and 100% matte tin plate termination finish, which

is 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-020B.

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.

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