Reinforced Isolated Phase Current Sense Reference Design with Small Delta Sigma Modulators

(ACTIVE) TIDA-00914

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Key Document

Description

The TIDA-00914 reference design realizes a reinforced isolated 3-phase inverter sub-system using isolated IGBT gate drivers and isolated current/voltage sensors. Precise in-line shunt based motor phase current sensing is done with AMC1306E25 delta sigma modulators. The modulator output is Manchester encoded which simplifies the clock and data signal routing between the MCU and modulators. High CMTI of the modulator helps suppress the inverter switching noise transients from corrupting the data on the controller side. The small size of the modulator enables a compact solution. The TIDA-00914 provides an interface to connect to an external MCU or FPGA where digital SINC filters can be implemented to demodulate the AMC1306E25 output bitstream. This reference design uses the F28379D delfino control card which is connected to the TIDA-00914 card through an adapter card to implement SINC filters for current sensing.

Features
  • Simplified clock routing to delta sigma modulators due to Manchester encoded data output
  • Small pin count (8) enables compact solution
  • High CMTI of modulator (>50 kV/us) improves noise immunity to switching transients
  • Short circuit response time of less than 1.5 µs
  • Calibrated full scale accuracy of <0.5% across temperature range of 0°C to 55°C
  • Nominal phase current measurement range of 28 Arms and peak measurement range of +/-80 Apk

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TI Devices (9)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
AMC1306E25  Small Reinforced Isolated Modulator With ±250mV Input and Manchester-Encoded CMOS Interface  Analog-to-digital converters (ADCs)  Sample & Buy View Design Kits & Evaluation Modules
LM3480  100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator  Power management  Sample & Buy Not Available
SN74LVC1G17  Single Schmitt-Trigger Buffer  Buffer/driver  Sample & Buy View Design Kits & Evaluation Modules
TLV1117  Single Output LDO, 800mA, Fixed and Adj., Internal Current limit, Thermal Overload Protection  Power management  Sample & Buy View Design Kits & Evaluation Modules
TLV521  350-nA Nanopower, Single, RRIO, CMOS Input, Operational Amplifier for Cost-Sensitive Systems  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
TLV704  24V Input Voltage, 150mA, Ultra-Low-Iq Low-Dropout (LDO) Regulators  Power management  Sample & Buy View Design Kits & Evaluation Modules
UCC5310  2A/1A, Single-Channel Isolated Gate Driver With Miller Clamp  Gate drivers  Sample & Buy View Design Kits & Evaluation Modules
UCC5320  2A/2A, Single-Channel Isolated Gate Driver for Bipolar Supply (E) or With Split Output (S)  Gate drivers  Sample & Buy View Design Kits & Evaluation Modules
UCC5390  10A/10A Single-Channel Isolated Gate Driver for Bipolar Supply (E) or With Split Output (S)  Gate drivers  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
AMC1306E25 Download Download
LM3480 Download Download
SN74LVC1G17 Download -
Download -
Download Download
Download Download
Download
Download Download
Download Download
Download Download
TLV1117 Download Download
Download
Download -
Download Download
Download Download
Download -
TLV521 Download
TLV704 Download Download
UCC5310 Download
Download Download
UCC5320 Download
Download Download
UCC5390 Download Download
Download Download

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Technical Documents

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

Application notes (2)
Title Abstract Type Size (KB) Date
PDF 666 19 Sep 2016
PDF 136 09 Nov 2011
User guides (1)
Title Abstract Type Size (KB) Date
PDF 1855 20 Apr 2018
White papers (1)
Title Abstract Type Size (KB) Date
PDF 607 23 May 2017
Design files (6)
Title Abstract Type Size (KB) Date
PDF 733 06 Apr 2018
ZIP 1704 06 Apr 2018
PDF 40 06 Apr 2018
ZIP 460 02 May 2017
PDF 1968 02 May 2017
PDF 539 02 May 2017
Related Tools & Software

Reference Designs  ( 2 )

Design Kits & Evaluation Modules  ( 1 )

Name Part Number Tool Type
F28379D controlCARD for C2000 Real time control development kits  TMDSCNCD28379D  Development Kits 

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