ISL6745EVAL1Z Intersil, ISL6745EVAL1Z Datasheet

ISL6745EVAL1Z

Manufacturer Part Number

ISL6745EVAL1Z

Description

EVAL BOARD 1 FOR ISL6745

Manufacturer

Intersil

Datasheet

1.ISL6745AUZ-T.pdf (8 pages)

Specifications of ISL6745EVAL1Z

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Current page: 1 of 8
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Bridge Controller with Precision Dead

Time Control

The ISL6745 is a low-cost double-ended voltage-mode

PWM controller designed for half-bridge and full-bridge

power supplies and line-regulated bus converters. It

provides precise control of switching frequency, adjustable

soft-start, and overcurrent shutdown. In addition, the

ISL6745 allows for accurate adjustment of MOSFET non-

overlap time (“deadtime”) with deadtimes as low as 35ns,

allowing power engineers to optimize the efficiency of open-

loop bus converters. The ISL6745 also includes a control

voltage input for closed-loop PWM and line voltage feed-

forward functions.

Low start-up and operating currents allow for easy biasing in

both AC/DC and DC/DC applications. This advanced

BiCMOS design also features adjustable switching

frequency up to 1MHz, 1A FET drivers, and very low

propagation delays for a fast response to overcurrent faults.

The ISL6745 is available in a space-saving MSOP-10

package and is guaranteed to meet rated specifications over

a wide -40°C to 105°C temperature range.

Ordering Information

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

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.

ISL6745AU

ISL6745AUZ

(See Note)

PART NUMBER

TEMP. RANGE

-40 to 105

(°C)

10 Ld MSOP

(Pb-free)

Data Sheet

PACKAGE

M10.118

DWG. #

PKG.

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

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

Features

• Precision Duty Cycle and Deadtime Control

• 100

• Adjustable Delayed Overcurrent Shutdown and Re-Start

• Adjustable Oscillator Frequency Up to 2MHz

• 1A MOSFET Gate Drivers

• Adjustable Soft-Start

• Internal Over Temperature Protection

• 35ns Control to Output Propagation Delay

• Small Size and Minimal External Component Count

• Input Undervoltage Protection

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

• Half-bridge Converters

• Full-bridge Converters

• Line-regulated Bus Converters

• AC/DC Power Supplies

• Telecom, Datacom, and File Server Power

Pinout

September 1, 2005

A Start-up Current

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

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

VERR

RTD

SS 1

ISL6745 (MSOP)

TOP VIEW

VDD

VDDP

OUTB

OUTA

GND

ISL6745

FN9161.6

Related parts for ISL6745EVAL1Z

ISL6745EVAL1Z Summary of contents

Page 1

... CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. | 1-888-INTERSIL or 1-888-468-3774 Intersil (and design registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2004-2005. All Rights Reserved All other trademarks mentioned are the property of their respective owners. ISL6745 FN9161 ...

Page 2

Internal Architecture V DD UVLO + - INTERNAL BG OT SHUTDOWN 130 - 150 C GND R 2 RTD V BIAS 160 PEAK 2 VALLEY 0 ...

Page 3

Absolute Maximum Ratings Supply Voltage GND - 0.3V to +20.0V DD OUTA, OUTB . . . . . . . ...

Page 4

Electrical Specifications Recommended operating conditions unless otherwise noted. Refer to Block Diagram and Typical Application schematic. 9V < 25°C (Continued) A PARAMETER OSCILLATOR Charge Current R Voltage TD Discharge Current Gain C Valley Voltage T C Peak ...

Page 5

Typical Performance Curves 0.01 0.02 0.03 0.04 0.05 0.06 RTD CURRENT (mA) FIGURE 1. OSCILLATOR CT DISCHARGE CURRENT GAIN 600 500 400 300 200 100 0 100 200 300 400 500 600 CT (pF) ...

Page 6

Pin Descriptions the power connection for the IC. To optimize DD DD noise immunity, bypass V to GND with a ceramic DD capacitor as close to the V and GND pins as possible. DD The total ...

Page 7

R (Figure 5), and in charge current TD (Figure 4), results from Equation 2 would differ from the calculated frequency. The typical performance curves may be used as a tool along with the previous equations as ...

Page 8

... 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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