Low-Power, Low-Noise Analog Front End Design for Circuit Breakers (ACB/MCCB-ETU)
TIDA-00128
(ACTIVE)
See the Important Notice and Disclaimer covering reference designs and other TI resources.
Key Document
Description
This reference design is intended for use in molded case circuit breakers (MCCB) electronic trip units. The op amp based design acts as current monitoring for over-current earth fault relays. Utilizing a low cost op amp, this design provides a pick-up (A) accuracy ±10 % and time delay (s) accuracy 0 to -20%. Additionally, this design takes harsh environment conditions in mind with features such as ambient insensitivity from -10 to 70°C and high electromagnetic immunity. Finally the analog front end of this design seemlessly interfaces to TI MSP430 MCU for quicker evaluation and faster time-to-market.
Features
- Pick-up accuracy at ±10 % and time delay accuracy at 0 to -20% offer wide range of adjustment for maximum flexibility
- Ambient insensitivity from -10 to +70°C for global design and worldwide acceptance
- Excellent trip time repeatability
- Wide input DC-DC converter with under voltage and overcurrent protection
- Self-power (CT powered) supply with reduced CT loading and Power loss
- Robust design that prevents phase reversal in overdrive conditions and high electrostatic discharge (ESD) protection (4-kV HBM)
See the Important Notice and Disclaimer covering reference designs and other TI resources.
Schematic/Block Diagram
Quickly understand overall system functionality.
Download Schematic
Test Data
Get results faster with test and simulation data that's been verified.
Download Test Data
TI Devices (8)
Order samples, get tools and find more information on the TI products in this reference design.
| Sample & Buy |
Design Kits & Evaluation Modules |
| CSD17571Q2 |
30V, N ch NexFET MOSFET™, single SON2x2, 29mOhm |
MOSFETs |
Sample & Buy |
View Design Kits & Evaluation Modules |
| ISO1176 |
2.5 kVrms Isolated RS-485 Profibus Transceiver |
Isolation |
Sample & Buy |
View Design Kits & Evaluation Modules |
| LM293 |
Dual Differential Comparator |
Amplifiers |
Sample & Buy |
Not Available |
| LM5017 |
7.5-100V Wide Vin, 600mA Constant On-Time Synchronous Buck Regulator |
Offline & isolated DC/DC controllers & converters |
Sample & Buy |
View Design Kits & Evaluation Modules |
| LM62 |
±2°C Analog Output Temperature Sensor |
Temperature sensors |
Sample & Buy |
Not Available |
| OPA4314 |
Quad, 3MHz, Low-Power, Low-Noise, RRI/O, 1.8V CMOS Operational Amplifier |
Operational amplifiers (op amps) |
Sample & Buy |
View Design Kits & Evaluation Modules |
| TPS55010 |
2.95V To 6V Input, 2W, Isolated DC/DC Converter with Integrated FETS |
Offline & isolated DC/DC controllers & converters |
Sample & Buy |
View Design Kits & Evaluation Modules |
| TPS715 |
50 mA, 24 V, 3.2-μA Iq, Low-Dropout Linear Regulator in SC70 Package |
Power management |
Sample & Buy |
View Design Kits & Evaluation Modules |
CAD/CAE symbols
Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.
Step 1: Download and install the free download.
Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.
Step 1: Download and install the free download.
Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
Step 3: Open the .bxl file with the Ultra Librarian software.
You can always access the complete CAD/CAE Symbols database at http://webench.ti.com/cad/
Both PCB footprints and schematic symbols are available for download in a vendor neutral format, which can then be exported to the leading EDA CAD/CAE design tools using the Ultra Librarian Reader. The reader is available as a (free download.).
The UL Reader is a subset of the Ultra Librarian toolset that can generate, import, and export components and their attributes in virtually any EDA CAD/CAE format.
Technical Documents
See the Important Notice and Disclaimer covering reference designs and other TI resources.
User guides (1)
| Title | Type | Size (KB) | Date |
| | PDF | 1954 |
25 Feb 2014
|
Selection guides (1)
| Title | Type | Size (KB) | Date |
| | PDF | 3478 |
06 Mar 2015
|
Design files (4)
| | ZIP | 287 |
26 Feb 2014
|
| | PDF | 2328 |
26 Feb 2014
|
| | PDF | 204 |
26 Feb 2014
|
| | PDF | 426 |
26 Feb 2014
|
Related Tools & Software
Support & training
Search our extensive online knowledge base where millions of technical questions and answers are available 24/7.
Search answers from TI experts
Content is provided 'AS IS' by the respective TI and Community contributors and does not constitute TI specifications.
See terms of use.
If you have questions about quality, packaging, or ordering TI products visit our Support page.
Worldwide (In English)
