This reference design is a signal conditioning reference design for Rogowski coils, targeting enhanced accuracy for current measurement in emeters, circuit breakers, protection relays and electrical vehicle (EV) chargers. This op-amp-based active integrator design covers a wide dynamic current range with bandwidth, stability and adjustable gain (1V/V to 525V/V). The design is optimized for three-phase systems and interfaces with TI's ADS131M08 metrology evaluation module. The design achieves current transformer (CT)-like accuracy at a cost similar to shunt-based designs.
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 overview of design layout for component placement
Complete listing of design components, reference designators, and manufacturers/part numbers
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
Detailed schematic diagram for design layout and components
Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | Signal Conditioning for Rogowski Coil Reference Design | PDF | HTML | Aug 11, 2025 |
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