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ISL6753_06 Datasheet

  • ISL6753_06

  • Intersil Corporation [ZVS Full-Bridge PWM Controller]

  • INTERSIL   INTERSIL

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ISL6753
Data Sheet
April 4, 2006
FN9182.2
ZVS Full-Bridge PWM Controller
The ISL6753 is a high-performance, low-pin-count
alternative, zero-voltage switching (ZVS) full-bridge PWM
controller. Like the ISL6551, 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. Compared to the more
familiar phase-shifted control method, this algorithm offers
equivalent efficiency and improved overcurrent and light-
load performance with less complexity in a lower pin count
package.
This advanced BiCMOS design features low operating
current, adjustable oscillator frequency up to 2MHz,
adjustable soft-start, internal over temperature protection,
precision deadtime and resonant delay control, and short
propagation delays. Additionally, Multi-Pulse Suppression
ensures alternating output pulses at low duty cycles where
pulse skipping may occur.
Features
鈥?Adjustable Resonant Delay for ZVS Operation
鈥?Voltage- or Current-Mode Operation
鈥?3% Current Limit Threshold
鈥?/div>
175碌A Startup Current
鈥?Supply UVLO
鈥?Adjustable Deadtime Control
鈥?Adjustable Soft-Start
鈥?Adjustable Oscillator Frequency Up to 2MHz
鈥?Tight Tolerance Error Amplifier Reference Over Line,
Load, and Temperature
鈥?5MHz GBWP Error Amplifier
鈥?Adjustable Cycle-by-Cycle Peak Current Limit
鈥?Fast Current Sense to Output Delay
鈥?70ns Leading Edge Blanking
PKG.
DWG. #
Ordering Information
PART
NUMBER
PART
MARKING
TEMP.
RANGE (擄C) PACKAGE
-40 to 105
鈥?Multi-Pulse Suppression
鈥?Buffered Oscillator Sawtooth Output
鈥?Internal Over Temperature Protection
鈥?Pb-Free Plus Anneal Available and ELV, WEEE,
RoHS Compliant
ISL6753AAZA ISL6753AAZ
(See Note)
16 Ld QSOP M16.15A
(Pb-free)
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.
Applications
鈥?ZVS Full-Bridge Converters
鈥?Telecom and Datacom Power
鈥?Wireless Base Station Power
鈥?File Server Power
Pinout
ISL6753 (QSOP)
TOP VIEW
VERR 1
CTBUF 2
RTD 3
RESDEL 4
CT 5
FB 6
RAMP 7
CS 8
16 VREF
15 SS
14 VDD
13 OUTLL
12 OUTLR
11 OUTUL
10 OUTUR
9 GND
鈥?Industrial Power Systems
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) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005, 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

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