ISL6558IRZ datasheet(7/16 Pages) INTERSIL

Part #	ISL6558IRZ

Description	Multi-Purpose Precision Multi-Phase PWM Controller With Optional Active Voltage Positioning

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Manufacturer	INTERSIL [Intersil Corporation]

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7

FN9027.12

June 21, 2005

POWER GOOD MONITOR

Undervoltage Threshold

VSEN Rising

-

0.92

-

VREF

Undervoltage Threshold

VSEN Falling

-

0.90

-

VREF

PGOOD Low Output Voltage

IPGOOD = 4mA

-

0.18

0.4

V

PROTECTION

Overvoltage Threshold

VSEN Rising, ISL6558CB, ISL6558CR, TA = 0°C to 70°C

1.12

1.15

1.2

VREF

VSEN Rising, ISL6558IB, ISL6558IR, TA = -40°C to 85°C

1.085

1.15

1.2

VREF

Percent Overvoltage Hysteresis (GNT)

VSEN Falling after Overvoltage

-

2

-

%

GBD = Guaranteed By Design

GNT = Guranteed Not Tesed

Electrical Specifications

Operating Conditions: VCC = 5V, TA = -40°C to 85°C. Unless Otherwise Specified. (Continued)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

CURRENT

SENSING

+

RISEN1

+

CORRECTION

ERROR

AMPLIFIER

FB

ISEN1

RFB

VOUT

Q3

Q4

L02

PHASE

PWM1

IL2

0.8V

COUT

RLOAD

VIN

HIP6601B

-

Q1

Q2

L01

PHASE

IL1

VIN

HIP6601B

CURRENT

SENSING

CORRECTION

PWM2

-

ITOTAL

+

-

RISEN2

ISEN2

-

CURRENT

AVERAGING

FIGURE 1. SIMPLIFIED BLOCK DIAGRAM OF THE ISL6558 VOLTAGE AND CURRENT CONTROL LOOPS CONFIGURED FOR A TWO

CHANNEL CONVERTER

∑

DROOP

ROS

PWM

CIRCUIT

PWM

CIRCUIT

VERROR1

VERROR2

IDROOP

ISL6558

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ISL6558IRZ Datasheet(PDF) 7 Page - Intersil Corporation

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