This reference design provides power and data isolation for low and ultra-low power applications. Generating isolated and non-isolated power rails with a high efficiency and containing a power efficient isolated data interface for three forward- plus one reverse-direction channels. Targeted applications are isolated loop powered 4- to 20-mA transmitters. This design can be adapted to other applications requiring highly-efficient power conversion and isolated data transmission while being powered from sources with a limited current capability.
| Output voltage options | TIDA-010018.1 | TIDA-010018.2 |
|---|---|---|
| Vin (Min) (V) | 4.4 | 4.4 |
| Vin (Max) (V) | 5.25 | 5.25 |
| Vout (Nom) (V) | 3.3 | 3.3 |
| Iout (Max) (A) | .01 | .01 |
| Output Power (W) | .033 | .033 |
| Isolated/Non-Isolated | Non-Isolated | Isolated |
| Input Type | DC | DC |
| Topology | Buck- Synchronous | Buck- Synchronous^Half Bridge- Hard Switched |
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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Reference design overview and verified performance test data
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
Files used for 3D models or 2D drawings of IC components
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.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | Isolated power and data interface for low-power applications reference design | Jan. 30, 2019 | |
| Application note | How to Isolate Two-Wire Loop-Powered Field Transmitters (Rev. B) | Oct. 07, 2019 |
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