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.
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Download the test file for TIDA-00128Title | Updated | Type | Size (KB) | |
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TIDA-00128 Gerber | 26 Feb 2014 | ZIP | 287 | |
TIDA-00128 PCB | 26 Feb 2014 | 2328 | ||
TIDA-00128 BOM | 26 Feb 2014 | 204 | ||
TIDA-00128 Schematic | 26 Feb 2014 | 426 |