ADuM4121

High Voltage, Isolated Gate Driver with Internal Miller Clamp, 2 A Output with Thermal Shutdown

Data Sheet
Rev. 0
icon-recommended Production
Top
Datasheet
Data Sheet Rev. 0
CN Rev. 0 | JP Rev. 0
User Guides Rev. 0
1 View All
IBIS Models
1 View All

Overview

Features and Benefits

  • 2 A peak output current (<2 Ω RDSON)
  • 2.5 V to 6.5 V input 
  • 4.5 V to 35 V output 
  • Undervoltage lockout (UVLO) at 2.5 V VDD1 
  • Multiple UVLO options on VDD2
    • Grade A: 4.4 V (typical) UVLO on VDD2
    • Grade B: 7.3 V (typical) UVLO on VDD2
    • Grade C: 11.3 V (typical) UVLO on VDD2
  • Precise timing characteristics
    • 53 ns maximum isolator and driver propagation delay
  • CMOS input logic levels
  • High junction temperature operation: 125°C
  • High common-mode transient immunity: >150 kV/µs
  • Default low output
  • Internal Miller clamp
  • Safety and regulatory approvals (pending) 
    • UL recognition per UL 1577 
    • 5 kV rms 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
    • VIORM = 849 V peak
  • Wide body, 8-lead SOIC

Product Details

The ADuM4121/ADuM4121-1 are 2 A isolated, single-channel drivers that employ Analog Devices, Inc.’s iCoupler® technology to provide precision isolation. The ADuM4121/ADuM4121-1 provide 5 kV rms isolation in the wide-body, 8-lead SOIC package. Combining high speed CMOS and monolithic transformer technology, these isolation components provide outstanding performance characteristics superior to alternatives such as the combination of pulse transformers and gate drivers.

The ADuM4121/ADuM4121-1 operate with an input supply ranging from 2.5 V to 6.5 V, providing compatibility with lower voltage systems. In comparison to gate drivers that employ high voltage level translation methodologies, the ADuM4121/ ADuM4121-1 offer the benefit of true, galvanic isolation between the input and the output.

The ADuM4121/ADuM4121-1 include an internal Miller clamp that activates at 2 V on the falling edge of the gate drive output, supplying the driven gate with a lower impedance path to reduce the chance of Miller capacitance induced turn on.

Options exists to allow the thermal shutdown to be enabled or disabled. As a result, the ADuM4121/ADuM4121-1 provide reliable control over the switching characteristics of insulated gate bipolar transistor (IGBT)/metal oxide semiconductor field, effect transistor (MOSFET) configurations over a wide range of switching voltages.

APPLICATIONS

  • Switching power supplies
  • Isolated IGBT/MOSFET gate drives
  • Industrial inverters
  • Gallium nitride (GaN)/silicon carbide (SiC) power devices

Product Categories

Markets and Technologies

Comparable Parts Click to see all in Parametric Search

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Documentation

Tools & Simulations

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

LTspice downloads and documentation
LTspice

Models for the following parts are available in LTspice:

ADUM4121A
ADUM4121B
ADUM4121C

IBIS Models

Reference Materials

Safety and Regulatory Compliance (1)

Safety and Regulatory Compliance Information

Solutions Bulletins & Brochures (1)

ADI Isolated Gate Drivers and Wolfspeed SiC MOSFETs

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

ADUM4121 Material Declaration
Quality And Reliability
Symbols and Footprints

Support & Discussions

ADuM4121 Discussions

RE: Miller clamp on the ADuM4121
12 week(s) ago in Isolated Gate Drive &amp; Sense Signal Chains
RE: ADuM4120/1 driving GaN/SiC
12 week(s) ago in Isolated Gate Drive &amp; Sense Signal Chains
External series gate resistor on the ADuM4120/1
12 week(s) ago in Isolated Gate Drive &amp; Sense Signal Chains
All ADuM4121 Discussions
ADuM4121 Contact ADI Technical Support »
ADuM4121 Ask your question »
ADuM4121 Contact ADI Technical Support » ADuM4121 Ask your question »

Sample & Buy

Sample & Buy functionality exists in desktop site
Back
Check Inventory

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Price Table Help

 
Evaluation Boards Pricing displayed is based on 1-piece.
Back
Add to cart
Check Inventory
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.