STEVAL-ILL066V2100 W LED street lighting evaluation board using the STLUX385A digital controller | Evaluation Boards | 1 | Active | The STEVAL-ILL066V2 evaluation board is a complete and configurable solution that efficiently controls a single, dimmable, high-brightness LED string using the STLUX385A digital controller.
The LED efficiency is high during all stages of dimming: the STEVAL-ILL066V2 can achieve a 92% efficiency at full load while maintaining a low < 250 mW power consumption in idle periods and less than 500mW during failure (open or short).
The STLUX385A device handles a primary side regulated power conversion stage as well as all the supported communication links.
The power conversion stage consists of a PFC regulator followed by a "Zero Voltage Switching" (ZVS) LC resonant stage. The high precision dimming is adjusted using a primary side regulation (PSR) control technique.
The LED brightness can be dimmed by controlling the LED current down to a very low level.
The STEVAL-ILL066V2 evaluation board provides DALI, insulated 0-10 and UART physical communication interfaces, with all communication managed by the STLUX385A device. |
STEVAL-ILL067V1Six-channel ALED7707-based LED driver with embedded boost converter for automotive interior lighting and TFT backlighting | Evaluation Boards | 1 | Active | The purpose of this evaluation board is to provide an application example of a six-channel, medium-current LED driver using the ALED7707 chip. The monolithic boost converter provides the required LED supply voltage starting from a single supply rail, while the brightness of the LED strings connected to the six outputs is controlled through a PWM signal. Open LED and LED short-circuit fault conditions are detected and managed.
The board has been designed to provide a compact reference solution for automotive applications involving several LEDs arranged in multiple strings (e.g. interior lighting, infotainment LCD backlighting, etc.). |
STEVAL-ILL069V235 W wide input range flyback converter using HVLED001A quasi resonant flyback controller and STF10LN80K5 | Evaluation Boards | 1 | Active | The STEVAL-ILL069V2 supplies a stable and insulated 48 V voltage bus suitable for secondary side circuitry (e.g., LED current generators) for a total output power of 35 W when a wide range of input voltages is applied at its input. An auxiliary 16 V output is also present to supply small circuits which absorb a maximum current of 20 mA.
A very high power factor is obtained thanks to the features of the HVLED001A. Input voltage variations, excessive input voltage (surge or burst overvoltage) or very low input voltages are managed by some of the protections of the HVLED001A, improving the reliability of the application.
The efficiency of the application is very high even at very low load thanks to the improved frequency fold-back feature that also reduces the output voltage ripple at light load.
Output short circuit and overload protections are auto-restart for safe operation in lighting environments. |
STEVAL-ILL072V1Single channel, 1 A automotive LED driver with boost controller for interior/exterior lights based on the ALED6001 | Development Boards, Kits, Programmers | 1 | Active | The purpose of this evaluation board is to provide an application example of a single-channel, high-current LED driver using the ALED6001 chip operating with a boost topology. The brightness of the LED string connected to its output can be controlled through a PWM signal (0% - 100% dimming) or a control voltage (10:1 analog dimming). Open LED, feedback disconnection & LED overcurrent fault conditions are detected and managed. The evaluation board has been designed to provide an example of a compact solution for all automotive applications involving several LEDs arranged is a single string, and day-time running lights (DTRL) in particular. |
| Development Boards, Kits, Programmers | 1 | Obsolete | |
| Evaluation Boards | 1 | Active | The STEVAL-ILL075V1 evaluation board is designed to help familiarize the user with the STLUX family of digital controllers and their innovative SMED (state machine, event driven) architecture. A convenient GUI enables the user to quickly generate the optimal SMED configuration for the application.
The external pins make it easy to inject SMED events and capture the SMED controlled PWM clock, thereby helping the user to validate the SMED configuration. Alternatively, the application circuit can be driven directly from the evaluation board.
The board provides a micro-USB connector to allow programming, GUI connectivity and configuration via a terminal utility running on a PC.
STLUX controllers integrate a serial interface which can be used to extend the STLUX communication capabilities via Bluetooth, WiFi or powerline modems.
The STEVAL-ILL075V1 evaluation board can be powered in three different ways: by external power supply, USB or via the SWIM interface.
The board features several free footprint areas which are ideal for connecting power drivers or amplifiers.
An additional free PCB footprint allows the user connect a quartz clock, which can be used in place of the STLUX385A internal clock. |
STEVAL-ILL076V218 W wide input range ultra slim flyback converter using HVLED001A quasi resonant flyback controller and STD8N80K5 | Development Boards, Kits, Programmers | 1 | Active | This board implements an offline power converter based on a single stage high-PF flyback topology using the HVLED001A controller.
A very slim form factor is achieved with innovative magnetic componentry.
The output voltage is controlled by the primary side, thus reducing the need for costly opto-couplers. The HVLED001A PSR precision and the innovative structure of the transformer makes for highly accurate output voltage regulation against load and line changes.
A very high efficiency is obtained and a full set of protections including output short circuit and input overvoltage is included.
Conducted EMI is pre-screened and clearances and creepage distances adhere to EN60950 safety requirements.
Power factor and THD are optimized to be respectively higher than 0.95 and lower than 10% at full load over the entire input voltage range.
The main application for this converter is for bus power supplies in a LED string driver providing 4 kV isolation. |
STEVAL-ILL080V118 W tube replacement zero ripple LED driver using HVLED001A quasi resonant flyback controller and STF10LN80K5 | Development Boards, Kits, Programmers | 1 | Active | The STEVAL-ILL080V1 provides a 200 mA, ripple-free output current to supply a single LED string between 75 and 93 V.
The form factor and specific component selection render this board suitable for rounded enclosures, as replacements for fluorescent lamp tubes (T8 size).
As typical applications are totally sealed, non isolated, high power factor SEPIC topology is used to achieve a high power factor, low THD (< 20%) and very high efficiency, as well as allowing input current ripple steering, which dramatically reduces EMI, even with small input filters.
The HVLED001A controller protections manage input voltage variations, excessive input voltage (overvoltage like surge or bursts) and very low input voltages.
The efficiency of the application is very high, compared with similar wattage applications. |
STEVAL-ILL089V11 A buck LED driver board based on the ALED6000 automotive-grade dimmable LED driver | Evaluation Boards | 1 | Active | The STEVAL-ILL089V1 evaluation board is based on the ALED6000 monolithic current source for high power LED driving. Digital dimming is implemented by driving the dedicated DIM pin. Low drop-out operation with almost 100% duty cycle can be achieved.
The ALED6000 is a 61 V asynchronous switching regulator with embedded Power MOSFET, designed to source up to 3 ADCcurrent depending on the application conditions. The 250 mV typical RSENSEvoltage drop, the embedded switchover feature on the VBIAS pin and the light load management (pulse skipping) all contribute to maximizing power conversion efficiency across the entire load range.
The current limit threshold and the switching frequency are adjustable for application optimization. The device includes an internal 250 kHz oscillator that can be externally adjusted up to 1.5 MHz. The size of the overall application is minimized thanks to the high switching frequency and its compatibility with ceramic output capacitors. Two LED6000 regulators can be synchronized in a 180° out-of-phase configuration for reduced total input RMS current. |
STEVAL-ILL090V1Evaluation kit for the ALED8102S 8-channel LED driver with direct switch control | Development Boards, Kits, Programmers | 1 | Active | The STEVAL-ILL090V1 evaluation board is based on the ALED8102SXTTR LED driver, which is directly controlled by an STM8 MCU.
It can be supplied via a USB mini connector or through J2 connected to a 12 V power supply.
The board implements two automotive scenarios that you can select via the SW2 switch.
The first one is an ambient light scenario based on three RGB LEDs with configurable brightness and color. You can change color and intensity via the SEL switch and the SW1 rotary switch, respectively. A short flashing signals the right RGB channel selection. If all the RGB channels are flashing, it means that the global brightness has been selected. If no user interaction is detected within about 30 seconds, the RGB LEDs automatically sweep through various color shades. The FADE switch performs a global fade in/fade out action.
The second scenario simulates a motorcycle rear light: two orange LED strips, representing the arrow lights, are placed side by side, separated by a red LED circle, whose function is to simulate the position/stop lights. By slightly rotating the SW1 switch counterclockwise, the left arrow light flashes, whereas a small clockwise rotation makes the right arrow flash memory. The red LED circle brightens up with a medium intensity until the STOP switch is pressed: in this case, the brightness significantly increases, signaling a BRAKE condition. If no user action is performed for a while, the rear tail LED enters the demo mode. |
