Isolated Half-bridge Gate Drivers with Analog Devices’ iCoupler® Digital Isolator Technology Deliver Industry-best Speed &...
08 Mai 2012 - 8:00AM
Business Wire
Analog Devices, Inc. (ADI), a global leader in high-performance
semiconductors for signal-processing applications and a pioneer in
digital isolator technology, today introduced the industry’s
fastest and most reliable isolated half-bridge gate drivers.
Incorporating ADI’s award winning iCoupler® digital isolator
technology, the 4 A ADuM3223 and ADuM4223 gate drivers are 4X
faster than devices based on optocoupler technology and have a 50
year operating life. ADI’s new gate drivers are designed to improve
the performance and efficiency of AC-to-DC and DC-to-DC power
supplies, solar-power inverters and motor-control designs while
meeting necessary safety requirements required for these
applications.
The ADuM3223 and ADuM4223 isolated half-bridge gate drivers
feature sub 55 ns propagation delay and less than 5 ns delay
matching, which is four times faster than gate drivers designed
using less effective optocoupler technology. The new gate drivers
meet safety standards for up to 5 kV rms reinforced isolation and
also provide 700 VPEAK galvanic isolation between the drivers’
high-side and low-side outputs, which minimizes the potential for
cross conduction and improves reliability and equipment safety.
“Optocoupler-based gate drivers typically suffer from poor
timing performance, which contributes to longer dead-time that can
affect overall operating efficiency. Optocouplers also use
power-hungry LEDs, which are prone to wear out and can limit the
life of the gate driver,” said Bob Briano, Digital Isolator
Marketing Manager, Analog Devices. “Using a typical power supply as
an example, ADI’s new isolated gate drivers offer significantly
better reliability, higher switching speed and temperature, and a
smaller package. That combination translates to greater power
density and better overall power supply efficiency.”
With two independent isolation channels, the ADuM3223 and
ADuM4223 gate drivers operate with an input supply range from 3.3 V
to 5.5 V, which suits them to lower voltage systems. Each output
may be continuously operated up to 400 V rms relative to the input.
The differential voltage between the high-side and low-side may be
as high as 700 VPEAK, which makes these devices ideal for providing
reliable control over a wide range of bus voltages.
The ADuM3223 provides 3 kV rms isolation in a narrow-body,
16-lead SOIC package, while the ADuM4223 provides 5 kV rms
reinforced isolation in a wide-body, 16-lead SOIC package.
- View product page, download data sheet
and order samples: http://www.analog.com/ADuM3223;
http://www.analog.com/ADuM4223
- Learn more about ADI’s gate drivers:
http://www.analog.com/isolatedgatedrivers
- View discussions and FAQs on Analog
Devices’ interface and products on EngineerZone™, an online
technical support community:
http://ez.analog.com/community/interface-isolation
- View a video: Isolated Gate Drivers
with iCoupler Technology:
http://videos.analog.com/video/products/interface/1555221460001/ADuM3223--4223-Isolated--Gate-Drivers-with-iCoupler-Technology/
ADuM3223 and ADuM4223 Isolated, Precision, Half-bridge Gate
Drivers Key Features
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