Isolated 2.5-W SiC & IGBT gate-drive reference design with integrated switch PSR flyback converter


Design files


This reference design provides two isolated voltages from a 24-V DC input supply. By means of zero ohm resistors, it is possible to configure the two independent outputs as +15 V and +4 V, or +15 V and -4 V with common ground with a total power of 2.5 W. The integration of a 100-V rated primary-side switch, together with the elimination of an auxiliary winding in the transformer, enables a compact solution.

  • High-voltage isolation
  • No optocoupler needed (PSR)
  • Configurable for single or multi-output applications
  • Several transformers available for different Vin / Vout range
Output voltage options PMP30629.1 PMP30629.2
Vin (Min) (V) 18 18
Vin (Max) (V) 36 36
Vout (Nom) (V) 15 -4
Iout (Max) (A) .13 .13
Output Power (W) 1.95 .52
Isolated/Non-Isolated Isolated Isolated
Input Type DC DC
Topology Flyback- Integrated Switch Flyback- Integrated Switch
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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.

TIDT167.PDF (1546 K)

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

TIDM507.PDF (146 K)

Detailed schematic diagram for design layout and components

TIDM508.PDF (131 K)

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

TIDM509.PDF (122 K)

Detailed overview of design layout for component placement

TIDM511.ZIP (691 K)

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


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

TIDM510.PDF (497 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Isolated DC/DC converters & modules

LM518065-VIN no-opto flyback converter with 100-V, 1.5-A integrated MOSFET

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Test report Isolated 2.5-W SiC & IGBT Gate-Drive Reference Design With Integrated Switch PSR Mar. 25, 2020

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