Current Sensing with <1-us Settling for 1-, 2- & 3-Shunt FOC in 3-Phase Inverter Reference Design

(ACTIVE) TIDA-00778

Description & Features

Technical Documents

Support & Training

Order Now


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

Key Document

Description

The TIDA-00778 reference design demonstrates fast and accurate current sensing for a three-phase motor driven with sensorless field-oriented control (FOC). Drives with lower audible noise require faster andaccurate current sensing. The most common low-cost current-sensing methods use a single shunt on the DC bus return path or two to three shunts in the inverter legs. The major challenge in motor control is to enable accurate current sensing even with the lowest active vector duration. TIDA-00778 demonstrates sub-microsecond settling and accurate current sensing in such scenarios. The referencedesign is applicable to major appliances,especially in compressor motors, and the inverter power stage can work up to 2 kW.

Features
  • Fast and accurate current sensing for sensorless FOC with single-, dual-, and triple-shunt topologies to minimize torque ripple and audible noise in motor drives
  • Single-shunt current sensing with minimum settling time and gate driver with lowest propagation delay enable active voltage vector duration < 1 μs
  • Single-shunt DC bus current sensing with < 0.15% calibrated accuracy
  • Dual- and triple-shunt current sensing with < 1.5-μs settling time and < 0.04% calibrated accuracy enabling accurate current sensing at extreme duty cycles
  • Overcurrent detection with response time < 1.5 μs
  • Input voltage 270-V to 390-V DC (rectified from 195-V to 265-V AC)

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


  



Schematic/Block Diagram

Quickly understand overall system functionality.

Download Schematic

Design Guide

Get results faster with test and simulation data that's been verified.

Download Design Guide

Design Files

Download ready-to-use system files to speed your design process. Get Viewer.

Download Design Files


Bill of Materials (BOM)

Find the complete list of components in this reference design.

Download BOM

TI Devices (7)

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
INA303  36V, Bi-Directional, Low-/High-Side, Voltage Output CSA with Window Comparator  Current sense amplifiers  Sample & Buy View Design Kits & Evaluation Modules
OPA835  Ultra Low Power, Rail to Rail Out, Negative Rail In, VFB Amplifier  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
TLV1701  2.2-V to 36-V, microPower Comparator  Amplifiers  Sample & Buy Not Available
TLV6001  1-MHz, Low-Power 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
TMS320F28027F  Piccolo™ 32-bit MCU with 60 MHz, 64 KB Flash, InstaSPIN-FOC  C2000 real-time control MCUs  Sample & Buy View Design Kits & Evaluation Modules
UCC27714  High-Speed, 4-A, 600-V High-Side Low-Side Gate Driver  Gate drivers  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
INA303 Download
OPA835 Download Download
Download -
TLV1701 Download Download
Download
Download
TLV6001 Download
Download
TLV704 Download Download
TMS320F28027F Download Download
UCC27714 Download -

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.


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
PDF 2980 09 Mar 2017
White papers (1)
Title Abstract Type Size (KB) Date
PDF 841 05 Nov 2018
Design files (6)
Title Abstract Type Size (KB) Date
ZIP 293 29 Mar 2017
ZIP 4026 29 Mar 2017
PDF 3522 29 Mar 2017
PDF 696 29 Mar 2017
PDF 60 29 Mar 2017
PDF 2020 29 Mar 2017
More literature (1)
Title Abstract Type Size (KB) Date
PDF 4678 29 Nov 2018
Related Tools & Software

Software (1)

Name Part Number Software Type
MotorWare™ Software  MOTORWARE  Application Software & Frameworks 


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.

Blogs