100 W, 3-phase inverter based on L6390 and UltraFASTmesh™ MOSFET for speed FOC of 3-phase PMSM motor drive

The STEVAL-IHM021V2 demonstration board implements a 100 W, 3-phase inverter for field-oriented control (FOC) of permanent magnet synchronous motors (PMSM).

The 3-phase inverter bridge is based on the STD5N52U power MOSFET with enhanced fast body-drain recovery diode in a DPAK package, and the L6390. The L6390 represents the latest in high-voltage half-bridge gate drivers featuring an integrated comparator for hardware protection against overcurrent, overtemperature, etc. The device also features an embedded operational amplifier suitable for advanced current sensing.

The STEVAL-IHM021V2 has been specifically designed to achieve fast and accurate conditioning of the three shunt resistor-based motor current feedback network, matching the requirements typical for high-end applications such as field-oriented motor control.

As an alternative to the STD5N52U, the STGD6NC60HD or STGDL6NC60DI IGBT devices may also be used on the board for frequencies lower and higher than 10 kHz, respectively. In either case, no replacement of the switches driving the network is required.

The board is compatible with 110 and 230 Vac mains, and includes a power supply stage using the VIPer12A-E (in buck configuration) to generate the +15 V and +3.3 V supply voltage required by the application. The board can be interfaced with the STM3210B-EVAL (STM32 microcontroller demonstration board) through the dedicated motor control connector.

Key Features

  • Wide range input voltage
  • Maximum power: up to 100 W at 230 Vac input
  • STD5N52U power MOSFET (4.4 A, 520 V)
  • Compatible with other power switches in DPAK packages (i.e. the STGD6NC60HD or STGDL6NC60DI)
  • 15 V auxiliary power supply connector
  • Motor control connector for interfacing with STM32-based control stages
  • Three shunt resistor-based motor current sensing network
  • Target applications: refrigerator compressors and dishwasher pumps
  • RoHS compliant




Technical Documentation

Product Specifications
Description Version Size
DB0972 DB0972: 100 W, 3-phase inverter based on L6390 and UltraFASTmesh™ MOSFET for speed FOC of 3-phase PMSM motor drives 2.1 171 KB
User Manuals
Description Version Size
UM1491 UM1491: 100 W 3-phase inverter demonstration board using the L6390 and STD5N52U for vector control 1.0 411 KB

Hardware Resources

Board Manufacturing Specifications
Description Version Size
Gerber files for STEVAL-IHM021V2 board 2.0 357 KB
Bill of Materials
Description Version Size
BOM for STEVAL-IHM021V2 board 1.0 12 KB
Schematic Pack
Description Version Size
Board schematics for STEVAL-IHM021V2 board 1.0 121 KB

Publications and Collaterals

Selection Guides
Description Version Size
X-NUCLEO expansion boards motor control - Selection guide 1.0 458 KB
Description Version Size
Products and solutions for Smart industry 2.0 5 MB


License Agreement
Description Version Size
Evaluation products license agreement 1.4 128 KB

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Part Number Core Product Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors

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Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STEVAL-IHM021V2 ActiveCARDIndustrialEcopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.