STMicroelectronics

The B-G431B-ESC1 Discovery kit is based on the STM32G431CB microcontroller, the L6387 driver and STL180N6F7 power MOSFETs, all from STMicroelectronics. The kit is composed of a main power board and a daughterboard with an embedded ST-LINK/V2-1 debugger. 

The kit implements an electronic speed controller (ESC) which drives a single three-phase brushless motor performing a sensorless field-oriented control (FOC) algorithm and six-step control with speed regulation. It also provides an active braking function algorithm. The sensorless FOC algorithm ensures long operating time and optimal dynamic performance.

The Discovery kit accepts command signals from an external unit for driving and monitoring, such as a flight control board for a drone. The kit is equipped with several communication bus interfaces: UART, CAN, and PWM channels. A potentiometer and a user button are available for user control. 

The daughterboard includes a 5 V battery eliminator circuit. The main board includes over-current, over-voltage and thermal protection. 

The form factor makes this kit suitable for small and very light radio-controlled vehicles such as first-person view racing drones, while the motor-current capability fits the power requirement of larger vehicles such as prosumer drones.

STMicroelectronics

STMicroelectronics has implemented a simple and innovative ac-dc front-end circuit which enables the designer to perform inrush current limitation in any converter that has an input rectifier bridge topology.

The STEVAL-SCR002V1 is based on a control circuit made of one Z0110MN surface-mount triac and two STTH110A diodes. Two 800 V TN1605H-8T silicon-controlled rectifiers (SCRs) are used to bypass an inrush resistor. 

The evaluation board provides a compact and non-insulated high-voltage driver for a mains SCR. The drive circuit synchronizes the SCR gate signals with the ac line polarity, and powers the SCR gate directly from the mains. This operation does not generate reverse losses in the SCR.

Compared to electromechanical alternatives, this solid-state solution provides higher reliability, longer service lifetime, lower EMI, and faster response. This ST circuit is also compatible with inrush current limitation performed either in the NTC/PTC bypass mode or in microcontroller phase-control mode.

The STEVAL-SCR002V1 may be powered by an uninsulated power supply, or directly controlled by an MCU. It is suitable for applications with an rms current up to 4.3 A at 60°C, and is compatible with ac-dc converters with or without PFC operating in continuous conduction, critical conduction or discontinuous conduction modes.

STMicroelectronics

The EVLPWD5T60 from STMicroelectronics is a 3-phase power board which allows engineers to evaluate the features of the PWD5T60 integrated motor driver IC.

The board supports a three- or single-shunt current sensing topology. A strip connector provides an easy interface to a microcontroller motor-control board. In addition, a 34-pin ST morpho header can be used to connect the EVLPWD5T60 board to an STM32 Nucleo MCU board through the X-NUCLEO-IHM09M1 motor-control expansion board.

Key features of the board include: 

  • High-voltage rail up to 400 V dc, limited by on-board bulk capacitor
  • Peak output current up to 1.2 A 
  • Output power up to 120 W
  • Input-voltage range: 9 V to 20 V
  • Sensored or sensorless field-oriented control or 6-step algorithm
  • Hall-effect sensor connector
  • Smart shut-down over-current protection
  • Bus voltage sensing
STMicroelectronics

The X-NUCLEO-DRP1M1 expansion board from STMicroelectronics enables designers to evaluate the features of the TCPP03-M20 USB Type-C® Power Delivery (PD) controller, including the ability to protect the bus- and supply-voltage lines in dual-role power (DRP) applications.

The expansion board can be stacked on top of any STM32 Nucleo-64 board which has a USB PD peripheral embedded in its microcontroller.

The X-NUCLEO-DRP1M1 demonstrates dead battery and sink operations, an integrated ST715PU33R linear regulator supplies the associated STM32 Nucleo development board. It also performs USB Type-C source operations when a compatible external source is connected to the board. In addition, the board supports dual role data functionality for sourcing devices.

The X-NUCLEO-DRP1M1 complies with the USB Type-C and USB PD 3.1 specifications for the standard power range, and is USB-IF certified as a 100 W DRP solution supporting a programmable power supply.

The companion X-CUBE-TCPP software package contains application examples for NUCLEO-G071RB and NUCLEO-G474RE development boards. These can be ported to other development boards that have USB Type-C PD-enabled MCUs.

STMicroelectronics

The NUCLEO-N657X0-Q evaluation board from STMicroelectronics provides a convenient platform for proof-of-concept and prototype development using the STM32N6 series of microcontrollers, the first STM32 to include the Neural-ART Accelerator, a neural processing unit (NPU). With the on-board NPU, the STM32N6 provides 600 times more machine-learning performance than a high-end STM32 MCU today.  

The STM32 Nucleo-144 board includes an ST Zio connector, which extends ARDUINO Uno V3 connectivity. ST morpho headers provide an easy means of expanding the functionality of the Nucleo open development platform with a wide choice of specialized shields.

The NUCLEO-N657X0-Q does not require a discrete probe as it integrates an ST-LINK debugger/programmer. The board is backed by free STM32 software libraries and examples available with the STM32Cube MCU package.

STMicroelectronics

The STEVAL-PMIC25V1 from STMicroelectronics is a power management IC (PMIC) evaluation board for the highly integrated STPMIC25. This PMIC manages the power requirements of the core, memory and interfaces of the STM32MP2x series microprocessors and other applications microprocessors.

The kit includes a USB dongle, which provides access via I2C interface to the configuration registers of the STPMIC25, where voltage settings, power sequences, protection thresholds and other parameters can be set.

The board includes header connectors for external access to the embedded regulators and switches in the PMIC, as well as internal routing via jumpers to satisfy any physical configuration requirements.

The passive components on the board are chosen for optimal performance across most operating conditions. Three push buttons and digital I/Os allow the engineer to trigger the digital controls of the PMIC.

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