Features

• Input voltage from 12 to 28 V DC (Nominally 21 V)

• Output RMS current up to 20A

• The board comprises the following key devices:

– STM32G473CET6: A high-performance Arm®-based Cortex®-M4 32-bit

MCU+FPU in LQFP48 (7x7mm) package. The MCU embeds

trigonometric and arithmetic math accelerators (CORDIC + FMAC),

timers for motor control PWM and dead time generation

– STDRIVE101: triple half-bridge gate driver in VFQFPN (4x4mm) with

inbuilt regulator

– STL220N6F7: six N-channel 60 V, 0.0012 Ω typ., 120 A, STripFET F7

power MOSFET in a PowerFLAT 5x6 package

– L6981NDR: 38 V, 1.5 A synchronous step-down converter in a

PowerSO-8 package

– LDL112: 1.2 A low quiescent current LDO with reverse current protection

in a SO8-batwing package

– TSV912IQ2T: dual rail to rail input/output 8MHz op amp

– BAT54KFILM: 40 V, 300 mA small signal Schottky diodes (single)

– BAT54SWFILM: 40 V, 300 mA small signal Schottky diodes (series)

– 2STR2160: low voltage fast switching PNP power transistor

– 2STR1160: low voltage fast switching NPN power transistor

– 2STR21STPS0560Z: 60 V, 0.25 A power Schottky rectifier

– ESDALC6V1-1U2: single line low capacitance transilTM for ESD

protection is a precision 500 mA regulator

• Hardware features enabling efficient motor control options

– Independent ADCs for 3-phase current sensing through shunts

– 3 ADC channels for back EMF sensing

– Bus voltage sensing

– Hardware over current protection through gate drive

– Option for temperature sensing

– Option for digital hall sensors or encoder inputs

– Option for mounting heat sink

• Empowered with a feature-rich STM32 motor control ecosystem for permanent magnet synchronous

motors (PMSM), brushless DC motors (BLDC)

– Wide configurability via motor control library (MCSDK), associated GUI and profiler

– Sensor less three-shunt or single-shunt vector field oriented control (FOC) algorithm (default)

– Suitable for ST’s high performance STM32 ZeST (zero speed full torque) algorithm, available on

request

– Option for sensor-less or sensored six step algorithm

– Tuning of drive dynamics

– Selection of operating parameters such as switching frequency

– Other parameter values for nominal and fault conditions, for example, over the current threshold

– Torque or speed mode operation

– Fully protected with overcurrent protection, undervoltage lockout and thermal protection

– Configuration examples with ST board designer, the JSON files are also provided

• Wide options for connectivity and user control

– Serial wire debug (SWD) port for debugging/programming

– Communication interfaces for SPI, UART, CAN /I2C pins

– Connector for buttons and trimmer along with one onboard pushbutton switch

• Fault, status LEDs and interface for external LED for illumination

• Options for enhancement with daughter cards

– Connector for mounting daughter board, for example, MEMS sensor board or memory

– Connector for increasing input voltage range by replacement of DC-DC converter

• Test land areas on the board for monitoring important signals or DAC outputs for debugging