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Intersil - Flexible Double Ended Voltage and Current Mode PWM Controllers

Numéro de référence ISL6741
Description Flexible Double Ended Voltage and Current Mode PWM Controllers
Fabricant Intersil 
Logo Intersil 





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ISL6741 fiche technique
Flexible Double Ended Voltage and Current Mode PWM
Controllers
ISL6740, ISL6741
The ISL6740, ISL6741 family of adjustable frequency, low
power, pulse width modulating (PWM) voltage mode (ISL6740)
and current mode (ISL6741) controllers is designed for a wide
range of power conversion applications using half-bridge, full
bridge, and push-pull configurations. These controllers provide
an extremely flexible oscillator that allows precise control of
frequency, duty cycle, and deadtime.
This advanced BiCMOS design features low operating current,
adjustable switching frequency up to 1MHz, adjustable soft-
start, internal and external over-temperature protection, fault
annunciation, and a bidirectional SYNC signal that allows the
oscillator to be locked to paralleled units or to an external
clock for noise sensitive applications.
Ordering Information
PART
NUMBER
(Notes 2, 3)
PART TEMP. RANGE
MARKING
(°C)
PACKAGE
PKG.
DWG. #
ISL6740IBZ 6740IBZ
(Note 1)
-40 to +105 16 Ld SOIC M16.15
(Pb-free)
ISL6740IVZ ISL67 40IVZ -40 to +105 16 Ld TSSOP M16.173
(Note 1)
(Pb-free)
ISL6741IB ISL6741IB -40 to +105 16 Ld SOIC M16.15
ISL6741IBZ 6741IBZ
(Note 1)
-40 to +105 16 Ld SOIC M16.15
(Pb-free)
ISL6741IVZ ISL67 41IVZ -40 to +105 16 Ld TSSOP M16.173
(Note 1)
(Pb-free)
NOTES:
1. Add “-T*” suffix for tape and reel. Please refer to TB347 for details
on reel specifications.
2. 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.
3. For Moisture Sensitivity Level (MSL), please see device information
page for ISL6740, ISL6741. For more information on MSL please
see techbrief TB363.
ISL674x
x=
0
1
CONTROL MODE
Voltage Mode
Current Mode
Features
• Precision Duty Cycle and Deadtime Control
• 95µA Start-up Current
• Adjustable Delayed Overcurrent Shutdown and Re-start
(ISL6740)
• Adjustable Short Circuit Shutdown and Re-start
• Adjustable Oscillator Frequency Up to 2MHz
• Bidirectional Synchronization
• Inhibit Signal
• Internal Over-Temperature Protection
• System Over-Temperature Protection Using a Thermistor or
Sensor
• Adjustable Soft-start
• Adjustable Input Undervoltage Lockout
• Fault Signal
• Tight Tolerance Voltage Reference Over Line, Load, and
Temperature
• Pb-Free Available (RoHS Compliant)
Applications
• Telecom and Datacom Power
• Wireless Base Station Power
• File Server Power
• Industrial Power Systems
• DC Transformers and Buss Regulators
Pin Configuration
ISL6740, ISL6741
(16 LD SOIC, 16 LD TSSOP)
TOP VIEW
OUTA 1
GND 2
SCSET 3
CT 4
SYNC 5
CS 6
VERROR 7
UV 8
16 OUTB
15 VREF
14 VDD
13 RTD
12 RTC
11 OTS
10 FAULT
9 SS
December 2, 2011
FN9111.6
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas Inc. 2003, 2004, 2007, 2011. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.

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