48V 3-Phase Inverter with Shunt-based In-line Motor Phase Current Sensing Reference Design

(ACTIVE) TIDA-00913

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Key Document

Description

The TIDA-00913 reference design realizes a 48V/10A 3-phase GaN inverter with precision in-line shunt-based phase current sensing for accurate control of precision drives such as servo drives. One of the largest challenges with in-line shunt-based phase current sensing is the high common-mode voltage transients during PWM switching. The INA240 bi-directional current-sense amplifier overcomes this problem using enhanced PWM rejection. The reference design provides an output voltage from 0 to 3.3V, scaled to ±16.5A with 1.65V mid voltage for high phase-current accuracy over the entire temperature range. The TIDA-00913 offers a TI BoosterPack compatible interface to connect to a C2000 MCU LaunchPad™ development kit for easy performance evaluation.

Features
  • Wide input voltage range 12V to 60V 3-phase GaN inverter with 7Arms output current per phase and non-isolated phase current sensing.
  • Precision in-line phase current sensing with 5mΩ shunt, ±16.5A full scale range and ±10A nominal range.
  • High accuracy phase current sensing over the temperature range from -25°C to 85°C. Uncalibrated accuracy <±0.5%; calibrated accuracy <±0.1%.
  • System cost reduction using a non-isolated current sense amplifier INA240 with superior AC common mode rejection operating up to PWM switching frequencies up to 100kHz.
  • Reduced BOM and easy layout due to the INA240 bi-directional, zero-drift current sense amplifier that directly interfaces to a 3.3V ADC.
  • TI BoosterPack compatible interface with 3.3V I/O for easy performance evaluation with a C2000 MCU LaunchPad™ development kit.

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Bill of Materials (BOM)

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TI Devices (7)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
INA240  80V, Low-/High-Side, Bi-Directional, Zero-Drift, Current Sense Amp w/Enhanced PWM Rejection  Current sense amplifiers  Sample & Buy View Design Kits & Evaluation Modules
LM5018  7.5-100V Wide Vin, 300mA Constant On-Time Synchronous Buck Regulator  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
LMG5200  80V GaN Half Bridge Power Stage  Gallium nitride (GaN)  Sample & Buy View Design Kits & Evaluation Modules
LP38691  500mA Low Dropout CMOS Linear Regulators Stable with Ceramic Output Capacitors  Power management  Sample & Buy Not Available
REF3333  30ppm/°C Drift, 3.9µA, SOT23-3, SC70-3, UQFN-8 Voltage Reference  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
SN74AVC8T245  8-Bit Dual-Supply Bus Transceiver with Configurable Voltage-Level Shifting and 3-State Outputs  Voltage level translation  Sample & Buy View Design Kits & Evaluation Modules
TMP302-Q1  Automotive, Pin-Selectable Trip Point 1.4V-Capable Family of Temperature Switches  Temperature sensors  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
INA240 Download
Download
LM5018 Download Download
Download Download
LMG5200 Download -
LP38691 Download Download
Download Download
REF3333 Download Download
Download -
Download
SN74AVC8T245 Download Download
Download Download
Download -
TMP302-Q1 Download

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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 4873 07 Apr 2017 0
Selection guides (1)
Title Abstract Type Size (KB) Date Views
PDF 1596 04 Apr 2018 0
White papers (2)
Title Abstract Type Size (KB) Date Views
PDF 693 05 Oct 2017 0
PDF 1415 21 Mar 2017 0
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 1217 04 Nov 2016 0
ZIP 5637 04 Nov 2016 0
PDF 2813 04 Nov 2016 0
PDF 554 04 Nov 2016 0
PDF 72 04 Nov 2016 0
PDF 830 04 Nov 2016 0
Related Tools & Software

Reference Designs  ( 1 )

Design Kits & Evaluation Modules  ( 2 )

Name Part Number Tool Type
48-V Three-Phase Inverter With Shunt-Based In-Line Motor Phase Current Sensing Evaluation Module  BOOSTXL-3PHGANINV  Evaluation Modules & Boards 
C2000 Piccolo MCU F28069M LaunchPad™ development kit  LAUNCHXL-F28069M  Evaluation Modules & Boards 

Software (1)


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