The TIDA-00661 reference design features signal processing front-end subsystem for electronic trip units (ETU) used in air circuit breakers (ACB) or molded case circuit breakers (MCCB). This subsystem consists of Delta-Sigma ADC with 24-Bit resolution and fast startup (< 3ms), ±2.5V regulator, FRAM-based microcontroller (MCU) for interfacing to ADC and processing the inputs. The subsystem is designed to start-up, compute full-cycle RMS current, make decisions, and provide trip signal to the solenoid within 30 ms.
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Download ready-to-use system files to speed your design process.
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 | High Resolution, Startup Analog Front End for Air Circuit Breaker Design Guide (Rev. B) | Sep. 09, 2016 | |
| Technical article | What’s the big deal about circuit breakers? | PDF | HTML | Aug. 01, 2017 |
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