Smart isolated gate driver with bias supply reference design


Design files


This reference design demonstrates the combination of UCC21732 gate driver with a UCC14xxx series bias supply. This design can be used to drive a variety of power switches, including connecting directly to a Wolfspeed Silicon Carbide (SiC) field-effect transistor (FET) module. This reference design can serve as either a high-side or low-side driver, or it can be tested with a capacitive imitation load.

  • +18-V and -4-V, 1.5-W isolated bias supply
  • Drives a variety of power switches
  • 10-A source and sink gate drive strength
  • Adjustable desaturation protection
  • Isolated analog sense
Output voltage options PMP23223.1
Vin (Min) (V) 18
Vin (Max) (V) 24
Vout (Nom) (V) 22
Iout (Max) (A) .068
Output Power (W) 1.496
Isolated/Non-Isolated Isolated
Input Type DC
Topology Other

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDT283.PDF (2507 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more


Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Detailed overview of design layout for component placement

TIDMAJ1.ZIP (1294 K)

Files used for 3D models or 2D drawings of IC components

TIDCG77.ZIP (177 K)

Design file that contains information on physical board layer of design PCB


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

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Technical documentation

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Type Title Date
Test report Smart Isolated Gate Driver With Bias Supply Reference Design PDF | HTML May 19, 2022

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