This reference design provides detection of traction motor phase currents. TIDA-01543 realizes an isolated current sensor. Precise in-line huntbased, motor phase current sensing is done with AMC1305M05-Q1 delta-sigma (ΔΣ) modulators and the INA301-Q1 device. The high CMTI of the modulator helps suppress inverter switching transients from corrupting the data on the controller side. The fast response time of the INA301-Q1 enables faster reaction times for overcurrent events. TIDA-01543 provides an interface to connect to an external MCU where digital SINC filters can be implemented to demodulate the AMC1305M05 output bit stream. This reference design uses the C2000 family, automotive-qualified F280049M Piccolo™ microcontroller control card.
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Reference design overview and verified performance test data
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | Isolated Current Sense Ref. Des. (±300 A) for Traction Inverter With Overcurrent (Rev. A) | Nov. 07, 2018 |
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