Isolated Current Shunt and Voltage Measurement Reference Design for Motor Drives Using AM437x

(ACTIVE) TIDA-00209

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Key Document

Description

This reference design uses the AMC130x reinforced isolated delta-sigma modulators along with AM437x Sitara™ ARM® Cortex® -A9 Processor, which implements Sinc filters on PRU-ICSS. The design provides an ability to evaluate the performance of these measurements: three motor currents, three inverter voltages, and the DC Link voltage.  Provided in the reference design is firmware to configure the Sinc filters, set the modulator frequency, and receive data from Sinc filters. A versatile run-time GUI is also provided to help the user validate the AMC130x performance and supports configuration changes to Sinc filter parameters in the Sitara™ Processor.

Features
  • Unique lower input voltage range of 50mV allows use of smaller shunt resitors enabling lower cost and heat dissipation
  • Implements Sinc3 Digital Filters on AM437x Sitara™ ARM® Cortex® -A9 Processor with proprietary programmable real-time unit (PRU-ICSS)
  • Precise measurements across reinfoced isolation barrier : calibrated accuracy of ±0.2%
  • Fast (<4uSec) response time for Short Circuit protection using Sinc3 filter with OSR of 16, eliminating the need for external components
  • Run-time Run-time GUI for complete performance analysis of modulator clock, sinc filter parameters, and currrent and voltage waveforms

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TI Devices (12)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
AM4376  Sitara Processor: ARM Cortex-A9, Secure Boot, PRU-ICSS  ARM Cortex-A9  Sample & Buy View Design Kits & Evaluation Modules
AM4377  Sitara Processor: ARM Cortex-A9, Security, EtherCAT  ARM Cortex-A9  Sample & Buy View Design Kits & Evaluation Modules
AM4378  Sitara Processor: ARM Cortex-A9, Secure Boot, 3D, PRU  ARM Cortex-A9  Sample & Buy View Design Kits & Evaluation Modules
AM4379  Sitara Processor: ARM Cortex-A9, Security, EtherCAT, 3D  ARM Cortex-A9  Sample & Buy View Design Kits & Evaluation Modules
AMC1304M05  Reinforced Isolated Modulator With LDO Regulator, ±50mV Input, and CMOS Interface  Analog-to-Digital Converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
AMC1304M25  Reinforced Isolated Modulator With LDO Regulator, ±250mV Input, and CMOS Interface  Analog-to-Digital Converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
AMC1305M05  Reinforced Isolated Modulator With ±50mV Input and CMOS Interface  Analog-to-Digital Converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
AMC1305M25  Reinforced Isolated Modulator With ±250mV Input and CMOS Interface  Analog-to-Digital Converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
CDCLVC1108  Low Jitter, 1:8 LVCMOS Fan-out Clock Buffer  Clock Buffers  Sample & Buy View Design Kits & Evaluation Modules
INA826  Precision, 200-μA Supply Current, 36-V Supply Instrumentation Amplifier  Amplifiers  Sample & Buy View Design Kits & Evaluation Modules
OPA211  1.1nV/rtHz Noise, Low-Power, Precision Operational Amplifier  Operational Amplifiers (Op Amps)  Sample & Buy View Design Kits & Evaluation Modules
SN6501  Low-Noise 350 mA, 410 kHz Transformer Driver for Isolated Power Supplies  Isolation  Sample & Buy View Design Kits & Evaluation Modules

Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 9174 19 Feb 2015 986
Selection guides (1)
Title Abstract Type Size (KB) Date Views
PDF 9699 22 Mar 2017 4,583
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 9637 10 Mar 2015 229
ZIP 582 10 Mar 2015 75
ZIP 2388 10 Mar 2015 160
ZIP 1471 10 Mar 2015 37
ZIP 210 10 Mar 2015 51
ZIP 761 10 Mar 2015 336
Related Tools & Software

Design Kits & Evaluation Modules (1)

Name Part Number Tool Type
AM437x Industrial Development Kit (IDK)  TMDXIDK437X  Development Kits 


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