STMicroelectronics

The STEVAL-LLL009V1 digitally controlled 300 W power supply consists of power factor correction (PFC) and half-bridge LCC resonant converter power stages. An STM32F334R8 microcontroller implements DC-DC and output synchronous rectification digital control, while the PFC is driven in transition mode by the L6562AT controller. The system supports constant voltage (CV) and constant current (CC) operation. MDmesh K5 and MDmesh DK5 Power MOSFETs are used in the PFC and LCC half-bridge, respectively, to ensure maximum efficiency, while the STripFET F7 Power MOSFET is employed to reduce conduction losses in the synchronous rectification stage on the secondary side. Both the primary and secondary sections are supplied by an off-line flyback circuit based on VIPER267KDTR high voltage converter for ultra-wide input which provides regulated voltages to the control board, the gate driver ICs and the signal conditioning circuits. Formal testing and measurement results confirm the ability and performance of ST power products combined with comprehensive digital control to deliver high efficiency, power factor near unity, and low THD across wide input voltage and load conditions.

The STEVAL-LLL010V1 kit consists of a two-sided LED panel board and separate control board with MCU and several user interface buttons. Each side of the LED board has an embedded LED8102S 8-channel LED driver IC and corresponding array of four independent white LEDS on one side, and a pair of three RGB LEDs in series on the other side. The control board mounts several switches for manual control of LED brightness and color on the white LEDs and RGB LEDs, respectively. An STM32F042 microcontroller is included to run LED control demonstration firmware to help users further evaluate the functionality of the featured LED8102S LED driver and develop custom applications. The entire kit is powered through a USB mini connector on the control board.

The STEVAL-LLL012V1 smart LED driver reference design is composed of a power board and a connectivity board. The power board is a single stage LED driver with high power factor (HPF) and low total harmonic distortion (THD) tailored to LED power supply specifications for smart home lighting applications. On the primary side, the HVLED001B controller manages the AC-DC HPF flyback converter. Primary side regulation and optocoupler control are applied independently on the chip, both exploiting precise regulation and very low standby power under no load conditions. The converter supplies a power output of 35 W maximum and a LED voltage in the range of 24 - 48 V with a constant current regulation of 0.7 A. The power board can provide 3.3 V supply voltage (J12 pin 1) to the connectivity board (connected via J12) and to a common GND (J12 pin 4). Thanks to the embedded programmable BlueNRG-M2SP, the connectivity board can manage the enable/disable state (J12 pin 3) and the PWM dimming (J12 pin 2) signals.

The STEVAL-LLL013V1 is a 7x25 LED matrix board controlled by two STP16CPC26 LED drivers. It can display banners in which each pixel can have a different level of brightness (32levels). The screen refresh rate is higher than 100 Hz. The banners can be scrolled horizontally in both directions for lights effects. The banners are loaded by the use of the STSW-LLL013GUI PC software app. The STP16CPC26 is a monolithic, low voltage, 16-bit constant current LED sink driver with a serial input/output interface. Two STP16CPC26 drive a 7x25 LED matrix. The two LED drivers are connected in a daisy chain and controlled by the STM32F042K6 MCU, using an SPI IP interface. The MCU works as a frame generator for the banners, and as a bridge with the PC software app, by implementing a USB VCP device class. Additional potentiometers on the board allow you to change the brightness of the whole display and the speed of the banner scrolling effects. To exploit all the potential features of the board, many hardware resources are available, such as pin connectors that deliver additional MCU features, a JTAG interface, and a serial input/output to cascade other LED drivers.

The STEVAL-LLL014V1 is a four LEDs strings evaluation kit based on the ALED7709 LED driver configured in boost. The ALED7709 is an automotive LED driver (AEC-Q100 Grade1 qualified), it includes a DC/DC controller usable as boost or SEPIC, and four low-side constant-current sinks. The integration of the boost controller with the LED sinks, gives the possibility of adapting the boost voltage for the different LED conditions, minimizing the power dissipation in the ALED7709 and as consequence increasing the overall efficiency. The evaluation kit houses also the SPC582B60E1, a 32bit automotive grade microcontroller. The MCU controls the ALED7709 via the I2C interface. The STEVAL-LLL014V1 can be configured and controlled with the STSW-LLL014GUI software, which runs on a PC connected to the board through the USB bus. The STEVAL-LLL014V1 is designed in the way that ALED7709 can be disconnected from the on board MCU and controlled with an external customer I2C system.

This evaluation board implements a DC-DC converter based on the LNBH26S device. It is used to power LNBs inside dish antennas to receive satellite TV signals. The LNBH26S is an integrated solution for supplying and interfacing satellite LNB modules in accordance with international standards. This simple and complete solution for dual tuner satellite receivers offers high performance at low cost and low external component count. The LNBH26S evaluation board includes an I²C bus interface and the internal 22 kHz tone generator which is factory trimmed and can be controlled by the DSQIN pin (TTL compatible), allowing immediate DiSEqC™ data encoding. Thanks to a fully integrated step-up DC-DC converter, it functions with a single input voltage supply source ranging from 8 V to 16 V.

This evaluation board implements a DC-DC converter based on the LNBH26S device. It is used to power LNBs inside dish antennas to receive satellite TV signals. The LNBH26S is an integrated solution for supplying / interfacing satellite LNB modules in accordance with international standards. This simple solution offers a complete solution for dual tuner satellite receivers and provides good performance at low cost using a low external component count. The LNBH26S evaluation board includes an I²C bus interface and the internal 22 kHz tone generator which is factory trimmed and can be controlled by the DSQIN pin (TTL compatible), which allows immediate DiSEqC™ data encoding. Thanks to a fully integrated step-up DC-DC converter, it functions with a single input voltage supply source ranging from 8 V to 16 V.

The STEVAL-LVLP01 discovery kit is a part of the motor-control development platform, which is supporting ZeST and HSO algorithms. It could be connected to B-G473E-ZEST1S, the STM32 control board, through the motor control connector V2. The STEVAL-LVLP01 evaluation board is based on the STDRIVE101 three-phase gate driver and the STL8N10F7 power MOSFETs. It embeds a power stage and circuitry for driving three-phase brushless DC motors. Together with the B-G473E-ZEST1S the user can enable the ZeST and HSO algorithms on the STM32 microcontroller. The STEVAL-LVLP01 can support single-shunt or three-shunt operation. The different connectors for onboard motor positioning feedback and motor phase sensing network allow implementation of sensor and sensorless algorithms for motion control.

The STEVAL-MET001V1 is an adapter board designed to facilitate the evaluation of MEMS devices in the LPS22HB product family. The board offers an effective solution for fast system prototyping and device evaluation from directly within the user’s application. The STEVAL-MET001V1 can be plugged into a standard DIL 24 socket. The adapter provides the complete LPS22HB pin-out and comes ready-to-use with the required decoupling capacitors on the VDDpower supply line. This adapter is supported by the STEVAL-MKI109V2 motherboard, which includes a high performance 32-bit microcontroller functioning as a bridge between the sensor and a PC, on which it is possible to use the downloadable graphical user interface (Unico GUI), or dedicated software routines for customized applications.

The STEVAL-MIC004V1 is a daughterboard containing 4 MP23ABS1 analog MEMS microphones. The coupon concept allows easy performance testing of ST MEMS microphones. It is possible to detach the single PCBs hosting each microphone.