ISL6532BCRZ-T Intersil, ISL6532BCRZ-T Datasheet

ISL6532BCRZ-T

Manufacturer Part Number

ISL6532BCRZ-T

Description

IC REG/CTRLR ACPI DUAL DDR 20QFN

Manufacturer

Intersil

Datasheet

1.ISL6532BCRZ.pdf (15 pages)

Specifications of ISL6532BCRZ-T

Applications

Memory, DDR/DDR2 Regulator

Current - Supply

5.25mA

Operating Temperature

0°C ~ 70°C

Mounting Type

Surface Mount

Package / Case

20-QFN

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Voltage - Supply

Current page: 1 of 15
Download datasheet (363Kb)

ACPI Regulator/Controller for

Dual Channel DDR Memory Systems

The ISL6532B provides a complete ACPI compliant power

solution for up to 4 DIMM dual channel DDR/DDR2 memory

systems. Included are both a synchronous buck controller

and integrated LDO to supply V

S0/S1 states and standby current during S3 state. During

Run mode, a fully integrated sink-source regulator generates

an accurate (V

need for a negative supply. A buffered version of the V

reference is provided as V

The switching PWM controller drives two N-Channel

MOSFETs in a synchronous-rectified buck converter

topology. The synchronous buck converter uses voltage-

mode control with fast transient response. Both the switching

regulator and integrated standby LDO provide a maximum

static regulation tolerance of

temperature ranges. The output is user-adjustable by means

of external resistors down to 0.8V.

Switching the memory core output between the PWM

regulator and the standby LDO during state transitions is

accomplished smoothly via the internal ACPI control

circuitry. The NCH signal provides synchronized switching of

a backfeed blocking switch during the transitions eliminating

the need to route 5V Dual to the memory supply.

An integrated soft-start feature brings V

in a controlled manner when returning to S0/S1 state from

S4/S5 or mechanical off states. During S0 the PGOOD

signal indicates that all supplies are within spec and

operational.

Each output is monitored for under and over-voltage events.

Current limiting is included on the V

regulators. Thermal shutdown is integrated.

Pinout

5VSBY

VDDQ

GND

VTT

DDQ

/2) high current V

20 19 18 17 16

ISL6532B (QFN)

TOP VIEW

REF

2% over line, load, and

DDQ

Data Sheet

with high current during

and V

DDQ

voltage without the

NCH

PGOOD

GND

COMP

into regulation

DDQ

standby

DDQ

1-888-INTERSIL or 321-724-7143

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

Ordering Information

Features

• Generates 2 Regulated Voltages

• ACPI Compliant Sleep State Control

• Integrated V

• PWM Controller Drives Low Cost N-Channel MOSFETs

• 250kHz Constant Frequency Operation

• Tight Output Voltage Regulation

• 5V or 3.3V Down Conversion

• Fully-Adjustable Outputs with Wide Voltage Range: Down

• Simple Single-Loop Voltage-Mode PWM Control Design

• Fast PWM Converter Transient Response

• Over Current Protection on V

• Integrated Thermal Shutdown Protection

• QFN Package Option

• Pb-free available

Applications

• Single and Dual Channel DDR Memory Power Systems in

• Graphics cards - GPU and memory supplies

• ASIC power supplies

• Embedded processor and I/O supplies

• DSP supplies

ISL6532BCR

ISL6532BCRZ

(See Note)

*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.

PART NUMBER

- Synchronous Buck PWM Controller with Standby LDO

- 3A Integrated Sink/Source Linear Regulator with

- Glitch-free Transitions During State Changes

- Both Outputs:

to 0.8V supports DDR and DDR2 Specifications

Monitoring of Both Outputs

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

- QFN Near Chip Scale Package Footprint; Improves

ACPI compliant PCs

Accurate V

Flat No Leads - Product Outline

PCB Efficiency, Thinner in Profile

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

Intersil (and design) is a registered trademark of Intersil Americas Inc.

July 2004

REF

DDQ

TEMP. RANGE

Buffer

/2 Divider Reference

2% Over Temperature

0 to 70

(

20 Ld 6x6 QFN

(Pb-free)

PACKAGE

and Under/Over-Voltage

ISL6532B

FN9120.3

L20.6x6

PKG. DWG. #

Related parts for ISL6532BCRZ-T

ISL6532BCRZ-T Summary of contents

Page 1

... NCH 15 PART NUMBER 14 PGOOD ISL6532BCR 13 GND ISL6532BCRZ COMP 12 (See Note *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 ...

Page 2

Block Diagram P3V3SBY VDDQ S3 REGULATOR VDDQ(2) VTTSNS VTT REG VTT(2) DISABLE { R U VREF_IN { R L UV/OV VREF_OUT SLP_S3# SLP_S5# 5VSBY VOLTAGE REFERENCE 0.800V 0.680V (-15%) 0.920V (+15%) 5V POR S3 SLEEP, SOFT-START, PGOOD, AND FAULT PWM ...

Page 3

Simplified Power System Diagram SLP_S3 SLP_S5 5VSBY/3V3SBY Typical Application - 5V or 3.3V Input +3.3V PGOOD V DDQ SLP_S3 SLP_S5 V REF VTT 3 ISL6532B 12V 5VSBY SLEEP STATE LOGIC PWM CONTROLLER STANDBY LDO ISL6532B VTT ...

Page 4

Typical Application - Input From 5V Dual +3.3V PGOOD V DDQ SLP_S3 SLP_S5 V REF VTT 4 ISL6532B 5VSBY +12V C BP S3# NCH S5# VREF_OUT VREF_IN UGATE C SS ISL6532B LGATE VTT VDDQ VTT VDDQ ...

Page 5

Absolute Maximum Ratings 5VSBY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V ...

Page 6

Electrical Specifications Recommended Operating Conditions, Unless Otherwise Noted. Refer to Block and Simplified Power System Diagrams and Typical Application Schematics (Continued) PARAMETER PWM CONTROLLER GATE DRIVERS UGATE and LGATE Source UGATE and LGATE Sink NCH BACKFEED CONTROL NCH Current Sink ...

Page 7

LGATE (Pin 19) LGATE drives the lower (synchronous) FET of the V synchronous buck switching regulator. LGATE is driven between GND and P12V. FB (Pin 11) and COMP (Pin 12) The V switching regulator employs a single voltage DDQ control ...

Page 8

ACPI State Transitions Cold Start (S5/ Transition) At the onset of a mechanical start, the ISL6532B receives it’s bias voltage from the 5V Standby bus (5VSBY). As soon as the SLP_S3 and SLP_S5 signals have transitioned HIGH, the ...

Page 9

S3 S5 12VATX 2V/DIV 2048 CLOCK CYCLES 12V POR PGOOD COMPARATOR FIGURE 2. TYPICAL STATE TRANSITION V Over Current Protection TT The internal V LDO is protected from fault conditions TT through a 3.3A current limit. This ...

Page 10

Careful component layout and printed circuit board design minimizes these voltage spikes example, consider the turn-off transition of the upper MOSFET. Prior to ...

Page 11

DRIVER OSC PWM COMPARATOR - DRIVER ∆V + OSC E REFERENCE ERROR AMP DETAILED COMPENSATION COMPONENTS COMP ISL6532B REFERENCE   ...

Page 12

However, since the value of R1 affects the values of the rest of the compensation components advisable to keep its value less than 5kΩ. Depending on the value chosen for R1, R4 can be calculated based on the ...

Page 13

The important parameters for the bulk input capacitance are the voltage rating and the RMS current rating. For reliable operation, select bulk capacitors with voltage and current ratings above the maximum input voltage and largest RMS current required by the ...

Page 14

ISL6532B Application Circuit Figure 7 shows an application circuit utilizing the ISL6532B. Detailed information on the circuit, including a complete Bill- +3. 10.0kΩ PGOOD DDQ REF 0.1µ 0.1µ ...

Page 15

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...

Related keywords

isl6532
isl6537
isl6532a
isl6537acr
isl6532acr
isl6532b
isl6532acrz
isl6532crz
isl6532acrz-tk
ISL6532BCRZ-T datasheet
ISL6532BCRZ-T data sheet
ISL6532BCRZ-T pdf datasheet
ISL6532BCRZ-T component
ISL6532BCRZ-T part
ISL6532BCRZ-T distributor
ISL6532BCRZ-T RoHS
ISL6532BCRZ-T datasheet download