isl6754 Intersil Corporation, isl6754 Datasheet

isl6754

Manufacturer Part Number

isl6754

Description

Zvs Full-bridge Pwm Controller With Adjustable Synchronous Rectifier Control

Manufacturer

Intersil Corporation

Datasheet

1.ISL6754.pdf (19 pages)

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Meier Automation Equipment Co., Limited

Part Number:

isl6754AAZ

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INTERSIL

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Part Number:

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ZVS Full-Bridge PWM Controller with

Adjustable Synchronous Rectifier Control

The ISL6754 is a high-performance extension of the Intersil

family of zero-voltage switching (ZVS) full-bridge PWM

controllers. Like the ISL6752, it achieves ZVS operation by

driving the upper bridge FETs at a fixed 50% duty cycle while

the lower bridge FETs are trailing-edge modulated with

adjustable resonant switching delays.

Adding to the ISL6752’s feature set are average current

monitoring and soft-start. The average current signal may be

used for average current limiting, current sharing circuits and

average current mode control. Additionally, the ISL6754

supports both voltage- and current-mode control.

The ISL6754 features complemented PWM outputs for

synchronous rectifier (SR) control. The complemented

outputs may be dynamically advanced or delayed relative to

the PWM outputs using an external control voltage.

This advanced BiCMOS design features precision deadtime

and resonant delay control, and an oscillator adjustable to

2MHz operating frequency. Additionally, Multi-Pulse

Suppression ensures alternating output pulses at low duty

cycles where pulse skipping may occur.

Ordering Information

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

NOTE: These Intersil Pb-free plastic packaged products employ

special Pb-free material sets, molding compounds/die attach

materials, and 100% matte tin plate plus anneal (e3 termination

finish, which is 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.

ISL6754AAZA* 6754 AAZ

NUMBER

(Note)

PART

MARKING

PART

-40 to +105 20 Ld QSOP M20.15

RANGE

TEMP.

(°C)

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

• Adjustable Resonant Delay for ZVS Operation

• Synchronous Rectifier Control Outputs with Adjustable

• Voltage- or Current-Mode Control

• 3% Current Limit Threshold

• Adjustable Average Current Limit

• Adjustable Deadtime Control

• 175µA Start-up Current

• Supply UVLO

• Adjustable Oscillator Frequency Up to 2MHz

• Internal Over-Temperature Protection

• Buffered Oscillator Sawtooth Output

• Fast Current Sense to Output Delay

• Adjustable Cycle-by-Cycle Peak Current Limit

• 70ns Leading Edge Blanking

• Multi-Pulse Suppression

• Pb-Free (RoHS Compliant)

Applications

• ZVS Full-Bridge Converters

• Telecom and Datacom Power

• Wireless Base Station Power

• File Server Power

• Industrial Power Systems

Pinout

September 29, 2008

Delay/Advance

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

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

RESDEL

CTBUF

RAMP

VERR

VREF

IOUT

RTD

(20 LD QSOP)

TOP VIEW

ISL6754

VADJ

VDD

OUTLL

OUTLR

OUTUL

OUTUR

OUTLLN

OUTLRN

GND

ISL6754

FN6754.1

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