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Analog Devices Inc. ADuM3123 Isolated Precision Gate Drivers

Analog Devices ADuM3123 4.0A single-channel, gate drivers are developed using Analog Devices iCoupler® technology to offer precision isolation. Leveraging high-speed CMOS and monolithic transformer technology, ADuM3123 delivers performance superior to alternative solutions such as a combination of pulse transformers and gate drivers. Operating from an input voltage supply of 3V-5.5V, the ADuM3123 gate drivers are compatible with lower voltage systems. Unlike gate drivers using high-voltage level translation methodologies, the ADuM3123 delivers true, galvanic isolation between the input and the output. The output can continuously operate up to 380Vrms relative to the input. This capability allows the ADuM3123 gate drivers to offer reliable control of the IGBT/MOSFET switching characteristics over a wide range of negative or positive switching voltages.

Features

  • 4.0A output short-circuit pulsed current
  • Isolated working voltage
    • Secondary side to input side: 537V
  • High-frequency operation: 1MHz maximum
  • 3.3V to 5V input logic
  • 4.5V to 18V output drive
  • Undervoltage lockout (UVLO): 2.8V VDD1
  • Precise timing characteristics
    • 64ns maximum isolator and driver propagation delay
  • Complementary metal-oxide semiconductor (CMOS) input logic levels
  • High common-mode transient immunity: >25kV/μs
  • High junction temperature operation: 125°C
  • Default low output
  • Safety and regulatory approvals pending)
    • UL recognition per UL 1577
      • 3000Vrms for 1 minute SOIC long package
  • CSA Component Acceptance Notice 5A
  • VDE certificate of conformity (pending)
    • DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12
    • Maximum working insulation voltage (VIORM) = 560V peak
  • Narrow body, 8-lead SOIC

Applications

  • Switching power supplies
  • Isolated gate bipolar transistors (IGBT)/MOSFET gate drives
  • Industrial inverters

EVAL-ADuM3123 Eval Board

Analog Devices EVAL-ADuM3123 Evaluation Board helps designers evaluate the features of the ADuM3123 iCoupler, 4A, Isolated Precision Gate Driver. The design of the board allows designers to evaluate the ADuM3123 using different power devices.

Additional Resources

Coupler Technology Benefits Gallium Nitride (GaN) Transistors in AC/DC Designs

GaN transistors with smaller device sizes, lower on-resistance, and higher working frequency offer many advantages over traditional silicon-based MOSFETs. Adopting GaN technology could cut total solution size without compromising efficiency.

Learn More

Publicado: 2015-09-30 | Atualizado: 2022-03-11