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ADUM7234:  Isolated Precision Half-Bridge Driver, 4 A Output

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The ADuM7234 is an isolated, half-bridge gate driver that employs the Analog Devices, Inc., iCoupler® technology to provide independent and isolated high-side and low-side outputs. Combining high speed CMOS and monolithic transformer technology, this isolation component provides outstanding performance characteristics superior to optocoupler-based solutions. By avoiding the use of LEDs and photodiodes, this iCoupler gate drive device is able to provide precision timing characteristics not possible with optocouplers. Furthermore, the reliability and performance stability problems associated with optocoupler LEDs are avoided.

In comparison to gate drivers employing high voltage level translation methodologies, the ADuM7234 offers the benefit of true, galvanic isolation between the input and each output. Each output may be operated up to ±350 V peak relative to the input, thereby supporting low-side switching to negative voltages. The differential voltage between the high side and low side may be as high as 350 V peak.

As a result, the ADuM7234 provides reliable control over the switching characteristics of IGBT/MOSFET configurations over a wide range of positive or negative switching voltages.

Applications
  • Isolated IGBT/MOSFET gate drives
  • Plasma displays
  • Industrial inverters
  • Switching power supplies

ОСОБЕННОСТИ И ПРЕИМУЩЕСТВА

  • Isolated high-side and low-side outputs
  • Working Voltage
    High-side or low-side relative to input: ±350 V peak
    High-side/low-side differential: 350 V peak
  • 4 A peak output current
  • High frequency operation: 1 MHz maximum
  • High common-mode transient immunity: >25 kV/μs
  • High temperature operation: 105°C
  • Narrow body, 16-lead SOIC
  • Safety and regulatory approvals (pending)
    UL recognition
    UL 1577 1000 V rms input-to-output withstand voltage

Functional Block Diagram for ADuM7234

Of Note ...

An Overview of the iCoupler family of products is available.

Документация

Наименование Тип контента Тип файлов
ADuM7234: Isolated, Precision Half-Bridge Driver, 4 A Output Data Sheet (Rev B, 02/2013) (pdf, 266 kB) Технические описания PDF
AN-0971: Управление уровнем излучений при работе с компонентами на основе технологии isoPower  (pdf, 406 kB) Статьи по применению PDF
AN-0971: Recommendations for Control of Radiated Emissions with isoPower Devices  (pdf, 406 kB) Статьи по применению PDF
AN-913: Isolating I2C Interfaces  (pdf, 280 kB) Статьи по применению PDF
AN-825: Power Supply Considerations in iCoupler Isolation Products  (pdf, 181 kB) Статьи по применению PDF
AN-793: ESD/Latch-Up Considerations with iCoupler® Isolation Products  (pdf, 246 kB) Статьи по применению PDF
AN-770: iCoupler® Isolation in CAN Bus Applications  (pdf, 234 kB) Статьи по применению PDF
AN-740: iCoupler® Isolation in RS-232 Applications  (pdf, 716 kB) Статьи по применению PDF
AN-727: iCoupler® Isolation in RS-485 Applications  (pdf, 282 kB) Статьи по применению PDF
CN-0196: H-Bridge Driver Circuit Using Isolated Half-Bridge Drivers  (pdf, 260 kB) Circuit Note PDF
Solving Isolation Challenges in Power Conversion Applications
This webcast will present solutions to isolation challenges in power conversion applications. Among the topics to be discussed are the limitations of traditional methods of isolation (such as utilization of optocouplers and pulse transformers) vs. more efficient and cost effective solutions that utilize digital isolators. If you are currently using optocouplers and pulse transformers, this is a webcast you should attend.
Webcasts WEBCAST
Inside iCoupler® Technology: Driving an H Bridge with ADuM3220 Isolated Gate Drivers  (pdf, 140 kB) Технические статьи PDF
Inside iCoupler® Technology:ADuM347x PWM Controller and Transformer Driver with Quad-Channel Isolators Design Summary  (pdf, 291 kB)
By Flow Zhao, Design Engineer
Технические статьи PDF
NAppkin Note: Lowering the Power of the ADuM524x  (pdf, 223 kB)
By Mark Cantrell, Senior Applications Engineer
Технические статьи PDF
Digital Isolator Product Selection and Resource Guide  (pdf, 640 kB) Product Selection Guide PDF
2008 Medical Solution Profile  (pdf, 126 kB)
High Performance ICs for Medical Imaging, Patient Monitoring, and Instrumentation
Обзор PDF
How do I learn about new iCoupler products? FAQs/RAQs HTML
Can I replace an optocoupler with an iCoupler product in an existing design? FAQs/RAQs HTML
What are some of the distinguishing features of the iCoupler products? FAQs/RAQs HTML
What communications protocols are supported by iCoupler products? FAQs/RAQs HTML
What are the different types of iCoupler products? FAQs/RAQs HTML
Do iCoupler products have VDE certification for reinforced insulation? FAQs/RAQs HTML
With which regulatory standards do iCoupler products comply? FAQs/RAQs HTML
How much isolation can iCoupler products provide? FAQs/RAQs HTML
What are the benefits of iCoupler technology? FAQs/RAQs HTML
What is iCoupler technology? FAQs/RAQs HTML
What types of technologies have been used to provide isolation? FAQs/RAQs HTML
What are optocouplers? What is optical isolation? FAQs/RAQs HTML
What is capacitive isolation? FAQs/RAQs HTML
What is isolation? Why is it needed? FAQs/RAQs HTML
What are common applications that use isolation? FAQs/RAQs HTML
How is isolation specified? FAQs/RAQs HTML
What is isolation rating? FAQs/RAQs HTML
What is the relationship between working voltage and isolation rating? FAQs/RAQs HTML
What is the difference between basic and double (or reinforced) insulation levels? FAQs/RAQs HTML
What are transient immunity and common-mode rejection? FAQs/RAQs HTML
What other parameters are important when considering an isolation device? FAQs/RAQs HTML
Словарь терминов Глоссарий HTML

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