ISL6597CRZ-T Intersil, ISL6597CRZ-T Datasheet

ISL6597CRZ-T

Manufacturer Part Number

ISL6597CRZ-T

Description

IC MOSFET DRVR DUAL SYNC 16-QFN

Manufacturer

Intersil

Datasheet

1.ISL6597CRZ.pdf (10 pages)

Specifications of ISL6597CRZ-T

Configuration

High and Low Side, Synchronous

Input Type

Non-Inverting

Delay Time

18ns

Number Of Configurations

Number Of Outputs

High Side Voltage - Max (bootstrap)

36V

Voltage - Supply

4.5 V ~ 5.5 V

Operating Temperature

0°C ~ 70°C

Mounting Type

Surface Mount

Package / Case

16-VQFN Exposed Pad, 16-HVQFN, 16-SQFN, 16-DHVQFN

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Current - Peak

Current page: 1 of 10
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Dual Synchronous Rectified MOSFET

Drivers

The ISL6597 integrates two ISL6596 drivers and is

optimized to drive two independent power channels in a

synchronous-rectified buck converter topology. These

drivers, combined with an Intersil multiphase PWM

controller, form a complete high efficiency voltage regulator

solution.

The IC is biased by a single low voltage supply (5V),

minimizing driver switching losses in high MOSFET gate

capacitance and high switching frequency applications.

Each driver is capable of driving a 3nF load with less than

10ns rise/fall time. Bootstrapping of the upper gate driver is

implemented via an internal low forward drop diode,

reducing implementation cost, complexity, and allowing the

use of higher performance, cost effective N-Channel

MOSFETs. Adaptive shoot-through protection is integrated

to prevent both MOSFETs from conducting simultaneously.

The ISL6597 features 4A typical sink current for the lower

gate driver, enhancing the lower MOSFET gate hold-down

capability during PHASE node rising edge, preventing power

loss caused by the self turn-on of the lower MOSFET due to

the high dV/dt of the switching node.

The ISL6597 also features an input that recognizes a high-

impedance state, working together with Intersil multi-phase

3.3V or 5V PWM controllers to prevent negative transients

on the controlled output voltage when operation is

suspended. This feature eliminates the need for the schottky

diode that may be utilized in a power system to protect the

load from negative output voltage damage.

Ordering Information

Add “-T” suffix for tape and reel.

NOTE: Intersil Pb-free plus anneal 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.

ISL6597CRZ

NUMBER

(Note)

PART

65 97CRZ

MARKING

PART

RANGE

0 to +70 16 Ld 4x4 QFN L16.4x4

TEMP.

(°C)

AMD® is a registered trademark of Advanced Micro Devices, Inc. All other trademarks mentioned are the property of their respective owners.

Data Sheet

PACKAGE

(Pb-Free)

DWG. #

PKG.

1-888-INTERSIL or 1-888-468-3774

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

Features

• 5V Quad N-Channel MOSFET Drives for Two

• Adaptive Shoot-Through Protection

• Programmable Deadtime for Efficiency Optimization

• 0.4Ω On-Resistance and 4A Sink Current Capability

• Supports High Switching Frequency

• Low V

• Low Bias Supply Current

• Support 3.3V and 5V PWM Input

• Enable Input and Power-On Reset

• QFN Package

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

• Core Voltage Supplies for Intel® and AMD®

• High Frequency Low Profile High Efficiency DC/DC

• High Current Low Voltage DC/DC Converters

• Synchronous Rectification for Isolated Power Supplies

Related Literature

• Technical Brief TB389 “PCB Land Pattern Design and

• Technical Brief TB363 “Guidelines for Handling and

Synchronous Rectified Bridges

- Fast Output Rise and Fall

- Ultra Low Tri-State Hold-Off Time (20ns)

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

- Near Chip-Scale Package Footprint; Improves PCB

Microprocessors

Converters

Surface Mount Guidelines for QFN (MLFP) Packages”

Processing Moisture Sensitive Surface Mount Devices

(SMDs)

No Leads-Product Outline

Utilization and Thinner in Profile

Internal Bootstrap Diode

May 4, 2007

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

ISL6597

FN9165.1

Related parts for ISL6597CRZ-T

ISL6597CRZ-T Summary of contents

Page 1

... PART RANGE PACKAGE (Note) MARKING (°C) ISL6597CRZ 65 97CRZ 4x4 QFN L16.4x4 Add “-T” suffix for tape and reel. NOTE: Intersil Pb-free plus anneal 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 ...

Page 2

Pinout Block Diagram VCC VCTRL 3.5K PWM1 3.5K EN CONTROL LOGIC VCTRL 3.5K PWM2 3.5K GND 2 ISL6597 ISL6597 (16 LD QFN) TOP VIEW GND 17 LGATE1 2 11 PGND PVCC ...

Page 3

Typical Application - Multiphase Converter Using ISL6597 Gate Drivers COMP FB V VSEN CC ISEN1 PWM1 PGOOD EN PWM2 ISEN2 MAIN CONTROL ISL65xx VID ISEN3 FS/DIS PWM3 PWM4 GND ISEN4 3 ISL6597 BOOT1 +3.3V UGATE1 VCTRL PHASE1 +5V LGATE1 +3.3V ...

Page 4

Absolute Maximum Ratings Supply Voltage (PVCC, VCC -0. Input Voltage ( ...

Page 5

Electrical Specifications These specifications apply for T PARAMETER LGATE Fall Time UGATE Turn-Off Propagation Delay LGATE Turn-Off Propagation Delay UGATE Turn-On Propagation Delay LGATE Turn-On Propagation Delay Tri-state to UG/LG Rising Propagation Delay OUTPUT (Note 3) Upper Drive Source Resistance ...

Page 6

Timing Diagram t PWM PDHU t PDLU t RU UGATE LGATE 1V t PDLL Operation and Adaptive Shoot-Through Protection Designed for high speed switching, the ISL6597 MOSFET driver controls both high-side and low-side N-Channel FETs from one externally provided PWM ...

Page 7

... PWM line of ISL6597 (assuming an Intersil PWM controller is used). Bootstrap Considerations This driver features an internal bootstrap diode. Simply adding an external capacitor across the BOOT and PHASE pins completes the bootstrap circuit. The following equation helps select a proper bootstrap capacitor size: Q GATE ≥ ...

Page 8

PVCC BOOT HI1 LO1 G1 UGATE PHASE FIGURE 3. TYPICAL UPPER-GATE DRIVE TURN-ON PATH PVCC C GD LGATE R G HI2 R R LO2 R GI2 G2 GND FIGURE 4. TYPICAL LOWER-GATE DRIVE TURN-ON ...

Page 9

MOSFET to suppress the Miller coupling effect. The value of the resistor depends mainly on the input voltage’s rate of rise, the C /C ratio, as well as the gate-source GD GS threshold of the upper MOSFET. A higher ...

Page 10

... 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 ...

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