ADuM4122 Single Gate, Adjustable Slew Rate, Isolated Gate Driver, 3 A Short-Circuit (<3 Ω)

Product Details

The ADuM4122 is an isolated, single device, dual output driver that uses iCoupler® technology to provide precision isolation. The ADuM4122 provides 5 kV rms isolation in the wide-body, 8-lead SOIC package. These isolation components combine high speed complementary metal-oxide semiconductor (CMOS) and monolithic transformer technology to provide performance characteristics superior to alternatives (such as a combination of pulse transformers and gate drivers).

The ADuM4122 operates with an input supply voltage range from 3.3 V to 6.5 V, providing compatibility with lower voltage systems. Unlike gate drivers that employ high voltage level translation methodologies, the ADuM4122 offers true galvanic isolation between the input and the output regions.

The ADuM4122 includes two output pins that facilitate slew rate control of two output drive strengths. The VOUT pin follows the logic of the VIN+ pin, while the boosting output, VOUT_SRC, can be toggled to follow the VIN+ pin or to go high-Z. The toggling of the slew rate is controlled by the primary side. Slew rate control can allow for electromagnetic interference (EMI) mitigation and voltage overshoot control.

An internal thermal shutdown sets outputs low if internal temperatures on the ADuM4122 exceed the thermal shutdown temperature.

As a result, the ADuM4122 provides reliable control over the switching characteristics of insulated gate bipolar transistor (IGBT) and metal-oxide semiconductor field effect transistor (MOSFET) configurations over a wide range of switching voltages, allowing for simple slew rate control.


  • Switching power supplies
  • Isolated IGBT and MOSFET gate drivers
  • Industrial inverters

Features and Benefits

  • 2 A output current per output pin (<3 Ω RDSON_X)
  • 3 A peak short-circuit current
  • 3.3 V to 6.5 V, VDD1
  • 4.5 V to 35 V, VDD2
  • Positive going threshold, UVLO at 3.3 V VDD1
  • Multiple positive going thresholds, UVLO options on VDD2
    • Grade A: 4.4 V (typical) positive going threshold, UVLO
    • Grade B: 7.3 V (typical) positive going threshold, UVLO
    • Grade C: 11.3 V (typical) positive going threshold, UVLO
  • Precise timing characteristics
    • 48 ns maximum propagation delay for falling edge
  • CMOS input logic levels
  • High common-mode transient immunity: >150 kV/µs
  • High junction temperature operation: 125°C
  • Default low output
  • Selectable slew rate control
  • Safety and regulatory approvals (pending)
    • UL recognition per UL 1577
      • 5 kV rms for 1 minute
    • CSA Component Acceptance Notice 5A
    • VDE certificate of conformity (pending)
      • DIN V VDE V 0884-10
      • VIORM = 849 V peak
  • Wide-body, 8-lead SOIC_IC