Compact, Non-Isolated 3 Phase Inverter Reference Design for 200-480 VAC Industrial Drives TIDA-01456 (ACTIVE)

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Key Document

Description

This reference design realizes a 3 phase inverter subsystem for variable frequency AC inverter drives and servo drives. This design is particularly suited for drive architectures in which the microcontroller and inverter ground are non-isolated. The basic isolated gate driver UCC5320S is used for driving the high side inverter switches, and the compact, six pin UCC27531 low side gate driver is used for driving the bottom switches. The result is for reinforced isolation to move to the UART communication channel. Inverter half bridge leg current sensing is done in two phases using shunt resistors and the dual operational amplifier TLV9062. This drive architecture results in a reduced number of reinforced isolated channels and enables a cost optimized, compact solution. This design is controlled by a C2000 microcontroller.

Features
  • 3 phase inverter power stage suited for 200-480 Vac powered drives with continous current rating up to 10 Arms
  • Compact and cost-optimized solution due to:
    • Movement of reinforced isolation from the power stage to the inter-processor communication channel resulting in reduction of number of reinforced isolated devices from 9 to 1
    • Use of small low side gate drivers (SOT23 – 2.9 mm * 1.6 mm) and basic isolated high side gate drivers (SOIC8 – 4 mm * 5 mm)
    • Single power supply rail powering all gate drivers through bootstrap technique
    • High side gate driver with basic isolation in power stage minimizes creepage distances
  • Low propagation delay (< 75 ns) of gate drivers enable decreasing dead time which improves inverter efficiency and distortions
  • Robust solution due to gate drivers with enhanced immunity against miller dv/dt turn on events, negative input voltage handling and UVLO

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TI Devices (9)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ISO7741  High-speed, low-power, robust EMC quad-channel digital isolator  Isolation  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
TL331  High Voltage Single Differential Comparator  Amplifiers  Sample & Buy Not Available
TLV431  1.5% Accuracy Low-Voltage Adjustable Precision Shunt Regulator  Voltage references  Sample & Buy View Design Kits & Evaluation Modules
TLV6001  1-MHz, Low-Power Operational Amplifier for Cost-Sensitive Systems  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
TLV702  300mA Low-Iq Low-Dropout (LDO) Regulator for Portables  Power management  Sample & Buy View Design Kits & Evaluation Modules
TLV9062  10-MHz, low-noise, RRIO, CMOS operational amplifier for cost-sensitive systems  Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
UCC27531  2.5-A, 5-A, 35-VMAX VDD FET and IGBT Single Gate Driver  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

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ISO7741 Download Download
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SN6501 Download Download
TL331 Download Download
TLV431 Download Download
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TLV6001 Download
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TLV702 Download Download
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TLV9062 Download Download
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UCC27531 Download Download
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UCC5320 Download
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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 1997 09 Oct 2017
Design files (6)
Title Type Size (KB) Date
ZIP 415 09 Oct 2017
ZIP 2578 09 Oct 2017
PDF 1631 09 Oct 2017
PDF 336 09 Oct 2017
PDF 34 09 Oct 2017
PDF 659 09 Oct 2017
Related Tools & Software

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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