1

®

FN9061

ISL6590

Data Sheet

April 2003

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

1-888-INTERSIL or 321-724-7143

Copyright © Intersil Americas Inc. 2003. All Rights Reserved

All other trademarks mentioned are the property of their respective owners. Dynamic VID™ is a trademark of Intersil Americas Inc.

Digital Multi-Phase PWM Controller for

Core-Voltage Regulation

Processors that operate above a GHz require fast, intelligent

power systems. The Intersil ISL6590 controller offers

intelligent digital, multi-phase control that provides high

bandwidth, optimal control frequency response, noise

immunity and active transient response control algorithms.

The design is fully scalable for controlling up to six phases,

each featuring the Intersil ISL6580 intelligent power stage.

The user can configure and monitor the power system via

the Asynchronous Serial Interface (ASI). The ISL6590

controller flexibility can be extended with the addition of an

external EEPROM for updating key circuit operating

parameters in the control loop and overall system design.

The digital architecture reduces the design time for

engineers with the use of our software. The software allows

the designer the freedom to choose output stage

components and still achieve optimized system

performance.

The ISL6590 digital controller communicates with the

ISL6580 integrated power stages via 100% digital signaling.

Serial communication allows for separation of the controller

and the power stage, providing placement and layout

freedom to the power stage. The digital controller

implements phase balancing to ensure even distribution of

phase currents. The ISL6590 controller configures the

ISL6580 power stage current limit, VID reference, non-

overlap period, Active Transient Response (ATR) trigger

levels and maximum temperature limit. The digital controller

also monitors the ISL6580 power stage peak currents, over-

temperature fault, input under voltage, output over/under

voltage to ensure proper operation of the power supply.

Pinout

ISL6590 (QFN)

TOP VIEW

Features

• Open Architecture features software programmable

control loop compensation enabling optimal system

performance

- User accessible asynchronous serial interface

• Intel VR10

- 6-bit Dynamic VID™

- Output voltage regulation range of 0.8375V to 1.600Vdc

• 250kHz to 1MHz switching frequency

• 100% digital control and signaling

• Active Transient Response (ATR) control algorithms for

minimized voltage droop and overshoot

• Controls up to six ISL6580 intelligent power stages (20A

per phase, 120A total system current)

• Programmable Adaptive voltage positioning (AVP) load

line

• Configurable control loop parameters (with optional

external EEPROM)

• Programmable MOSFET dead time control

• High speed voltage and current control loops

• PWRGD and OUTEN

• Serial interface to ISL6580 power stages for system

monitoring and configuration

• 64 Ld 9x9 QFN package

• QFN Package Option

- QFN Compliant to JEDEC PUB95 MO-220 QFN - Quad

Flat No Leads - Product Outline

- QFN Near Chip Scale Package Footprint; Improves

PCB Efficiency, Thinner in Profile.

01

64

OUTEN

VID [0]

VID [1]

VID [2]

VID [3]

VID [4]

VID [5]

VDD_CORE

PWRGD

VDD_IO

MCLK

MDO

MDI

MCS

NDRIVE1

PWM1

TEST 2

ATRL

SOC

ERR

VDD_IO

SYS_CLK

VDD_IO

NC

NC

VDD_CORE

NC

NC

IDIG6

PWM6

NDRIVE6

TEST1

49

32

17

16

48

33

Ordering Information

PART NUMBER

PACKAGE

PKG. NO.

ISL6590DR

0 to 85

64 Ld 9x9 QFN L64.9x9-S