STEVAL385LED4CH

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The STEVAL 385 LED 4CH evaluation board is one of the versatile LED driver boards developed by STMicroelectronics, which is suitable for driving different LEDs from a single switched mode power supply. It is the perfect choice for designers who require a high power and efficient lighting solution for their projects. This board incorporates a high efficiency step down converter that can convert a wide DC voltage range (from 10 volts to 48 volts) into a regulated DC current, allowing it to drive up to four strings of multiple LEDs in series or in parallel configurations. In addition, it can also provide various dimming functions.

The STEVAL 385 LED 4CH board is designed to work with a single input voltage and delivers up to 900mA of current. The board can be powered by a DC power source with a maximum input voltage of 48 volts. It is also equipped with various protection features, such as input overvoltage protection, output overvoltage protection, and short-circuit protection, which ensure that the board is safe to use. To ensure efficient heat dissipation, the board also has a fanless cooling system.

The board is equipped with four independent channels, each of which is capable of connecting up to two strings of LEDs connected in series or in parallel.Each channel is equipped with a 200mA mixed-mode control loop, making it possible to support different dimming functions such as analogue voltage dimming, pulsed width modulation (PWM) dimming, and constant current dimming. The board also supports a wide range of LED voltages, from 3.2 volts to 20 volts, making it suitable for various LED light designing applications.

The STEVAL 385 LED 4CH board operates by accepting a low voltage between 10 volts and 48 volts, transforming it into a low-current precisely-regulated DC voltage, which is then applied to the LEDs through a high-efficiency power converter. This board’s power converter is capable of delivering up to 900mA of current, allowing it to drive up to eight strings of LEDs in various configurations. To ensure precise output voltages and currents, the board is equipped with a precise voltage loop and precise current loops, which help ensure precise LED brightness in challenging environments.

In order to provide precise voltage and current control, the STEVAL 385 LED 4CH board includes over voltage protection, which ensures that the LEDs do not get burnt even if the input voltage exceeds the board’s rated voltage. The board also includes temperature sensing circuitry that automatically reduces the current if the board temperature reaches a certain level, thus protecting the board from overheating. In addition, the board is provided with status LEDs that provide visual indication of the board’s operating conditions, helping to quickly diagnose any problems.

Overall, the STEVAL 385 LED 4CH evaluation board is an ideal choice for designers who require a high power and efficient lighting solution for their projects. Its wide range of features and precision dimming functions make it the perfect choice for any lighting application, ranging from general lighting applications to specific applications such as theatrical lighting and architectural lighting.

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