STMicroelectronics

The EVLCMB1-AIO210W demonstration board is a 12 V - 210 W converter, tailored for the typical specification of an AC/DC adapter for all-in-one systems, with a wide input mains range, very low power consumption at light load and good average efficiency. The architecture is based on a two-stage approach: a front-end transition mode PFC pre-regulator and a downstream LLC resonant half bridge converter; the PFC and LLC controllers are both integrated in the STCMB1 combo IC. At secondary side, synchronous rectification is implemented by means of the SRK2001. The PFC section uses a proprietary a constant-on-time control methodology that does not require a sinusoidal input reference, thereby reducing the system cost and external component count. The LLC section is based on a proprietary time shift control method that improves dynamic behavior and input ripple rejection resulting in a cleaner output voltage. In the STCMB1 are also embedded a high voltage start up generator, an X-capacitor discharge circuit, the AC brownout/in function and a complete set of protections. These features are fully exploited in the EVLCMB1-AIO210W to make itself a robust and safe SMPS, for both the final user and the supplied system, while keeping a reduced external component count. The EVLCMB1-AIO210W is characterized by very high efficiency at the light loads that comes from the careful design and selection of power components and by the burst mode management functions integrated in the STCMB1, including a proprietary IP that allows minimizing the number of cycles in the burst packet and so minimizing the switching losses.

The EVLHV101PSR50W is intended to provide a stable and insulated 60 V voltage for a maximum power of 50 W. It can be used as a standalone power supply or as a front end stage in a dimmable (or non-dimmable) off line LED driver. A very high power factor, low THD and low BOM cost are obtained from this demonstration board thanks to the features of the HVLED101, which adopts frequency foldback with valley locking operation to reduce the switching losses and minimize acoustic noise. Extremely low input power is obtained at no-load. Input voltage variations, excessive input voltage (overvoltage like surges or bursts) and insufficient input voltage are managed by the HVLED101 protections, which improve the reliability of the application. Output short-circuit and overload protection with auto restart behavior is implemented.

The EVLHV101SSR50W is intended to provide a stable and insulated 60 V voltage for a maximum power of 50W. It can be used as a standalone power supply or as a front end stage in a dimmable (or non-dimmable) off line LED driver. A very high power factor, low THD and low BOM cost are obtained from this demonstration board thanks to the features of the HVLED101, which adopts frequency foldback with valley locking operation to reduce the switching losses and minimize acoustic noise. Extremely low input power is obtained at no-load. Input voltage variations, excessive input voltage (overvoltage like surges or bursts) and insufficient input voltage are managed by the HVLED101 protections, which improve the reliability of the application. Output short-circuit and overload protection with auto restart behavior is implemented.

The LED demonstration board is based on a high power factor flyback topology using the STMicroelectronics®HVLED815PF device. The HVLED815PF is a high-voltage primary switcher intended for operating directly from the rectified mains with minimum external parts and enabling high power factor (> 0.90) to provide an efficient, compact and cost effective solution for LED driving. It combines a high-performance low voltage PWM controller chip and an 800 V, avalanche-rugged Power MOSFET, in the same package. There is no need for the optocoupler thanks to the patented primary sensing regulation (PSR) technique.

The EVLMG4LPWRBR1 is a GaN-based half-bridge power module equipped with MASTERGAN4L, which quickly creates new topologies without needing a complete PCB design. The module is fine-tuned to work in an LLC application: in fact, the low side resistors are set to zero and two external body diodes are connected in parallel to each half-bridge GaN. The module can also work in active clamp or resonant peak current mode flyback applications simply by properly adjusting the low side sense resistor and removing the parallel diodes. Two alternative 6 V linear regulators are embedded in the PCB: a simple low-cost regulator and a more precise temperature-independent one. Due to the external bootstrap diode and capacitor, a proper supply for VCC, PVCC, and Vbo is provided. The module accepts only separate driving signals and the delay time can be modulated by adjusting a dedicated RC filter. The EVLMG4LPWRBR1 is a 30 x 40 mm wide FR-4 PCB, resulting in an Rth(J-A)of 45 °C/W, without forced airflow.

The EVLONE65W is a high power density USB-PD board supporting Programmable Power Supply (PPS). The design supports wide range input voltage and can deliver five fixed PDOs and two APDOs. This board is based on ST-ONE, the world’s first digital controller embedding an Arm® Cortex® M0+ core, an offline programmable controller with synchronous rectification, and USB-PD PHY in a single package. Such a system is specifically designed to control ZVS non-complementary active clamp flyback converters to create high power density chargers and adapters with USB-PD interface. The device includes an active clamp flyback controller and its HV startup on the primary side, a microcontroller and all the peripherals required to control the conversion and the USB-PD communication on the secondary side. The two sides are connected through an embedded galvanically isolated dual communication channel. High switching frequency operations in companion with a MasterGaN4 power stage allows use of small size magnetic components while reaching a very high efficiency.

The EVLONEMP is one of the best power density USB Power Delivery multiport boards with a USB Type-A port and a USB Type-C® port supporting Programmable Power Supply (PPS). The design supports a wide range of input voltages and can deliver 10 W (5 V@2 A) on a Type-A port, and five fixed PDOs and two APDOs on a Type-C port. This board is based on ST-ONEMP, the world’s first digital controller embedding Arm® Cortex® M0+ core, an offline programmable controller with synchronous rectification, and USB PD PHY in a single package. Such a system is specifically designed to control ZVS non-complementary active clamp flyback converters to create high power density chargers and adapters with USB Power Delivery interface. The device includes an active clamp flyback controller and its HV startup on the primary side, a microcontroller and all the peripherals required to control the conversion and the USB Power Delivery communication on the secondary side. The two sides are connected through an embedded galvanically isolated dual communication channel. High switching operations in companion with MasterGaN power stage allow to use small size magnetic components and allow to reach a very high efficiency.

The compact design of the EVLONEPCC allows to communicate between ST-ONE (or ST-ONEMP) and STEVAL-PCC020V2 using the UART communication channel on the USB Type-C port of the EVLONEx board. To configure ST-ONE (or ST-ONE MP) parameters through the CC line, ST-ONE (or ST-ONEMP) must be programmed as follows: - APPL_SETUP: disabled - USART_ebable (UART mapping): CC1/CC2 - Programming mode: enabled The device’s parameters are programmed from the PC through a dedicated GUI. Connecting the USB Type-C port of the EVLONEx board to the Plug USB Type-C connector of EVLONEPCC, and connecting the other side of this adapter to a 6-way female Picoflex IDC flat Ribbon cable, it is possible to open the UART communication channel between ST-ONE (or ST-ONEMP) and STEVAL-PCC020V2. ATTENTION: If there is no communication between the device and STEVAL-PCC020V2, please reverse the connection of the USB Type-C connector of the adapter.

The EVLPWD5T60 evaluation board is a 3-phase power board that allows to evaluate all of the PWD5T60 features. The board is designed to support a three-shunt or a single-shunt current sensing topology. A strip connector allows easy interfacing with an MCU control board. The 34-pin ST morpho allows to connect the EVLPWD5T60 board to an STM32 Nucleo board through the X-NUCLEO-IHM09M1 motor control connector expansion board. The PWD5T60 is a 3-phase high-density power driver integrating gate driver and six N-channel power MOSFETs. It has dedicated input pins for each output and a shutdown pin. The logic inputs are CMOS/TTL compatible down to 3.3 V for easy interfacing with control devices.

The EVLSPIN32G4-ACT is a reference design for implementing next generation smart actuators, based on the STSPIN32G4, a system-in-package integrating in a 9x9 mm VFQFPN package, a triple high-performance half-bridge gate driver with a rich set of programmable features and a mixed signal STM32G431 microcontroller. The board is designed to drive three-phase brushless motors up to 5 Arms output current and 48 V supply input delivering a total power of 250 W in a very compact form factor (62 mm x 50 mm). Monitoring is available for the power stage in case of overheating, overvoltage, and overcurrent. The sensing of motor winding currents can be selected between three-shunt or single-shunt topology. The board is ready for FOC and 6-step control algorithms and can run in sensor-less and sensor-based mode using Hall sensors or quadrature encoder. Thanks to a smooth interfacing with the STWIN.box development kit and a complete software and firmware ecosystem, the motor inverter is empowered by wired and wireless connectivity (RS485, UART, USB, CAN, and Bluetooth® Low Energy, Wi-Fi, NFC), a plethora of inertial end environmental sensors (accelerometer, gyroscope, inclinometer, magnetometer, humidity, temperature, pressure), and data storage onboard (microSD™ card) making the EVLSPIN32G4-ACT a perfect suit for cutting edge motor control solutions such as IoT, condition monitoring, and predictive maintenance.