STEVAL-ILL035V1

Part Status:	Active
Lead Free Status / RoHS Status:	--
Current - Output / Channel:	85mA
Moisture Sensitivity Level (MSL):	--
Outputs and Type:	16, Non-Isolated
Voltage - Output:	--
Features:	Dimmable, USB Interface
Voltage - Input:	10 V ~ 28 V
Supplied Contents:	Board(s)
Utilized IC / Part:	LED7708
Series:	--

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Introduction

The STEVAL-ILL035V1 Evaluation Board is a LED driver suitable for multi-color LED control applications, such as general lighting and garden lighting. It is highly integrated, including various protection and control functions, for driving medium and high power LEDs. It integrates the secondary side- and primary side- regulation, and can operate from AC/DC input voltages as low as 6V up to 400V.This board features a PFC with a good input power factor, using a peak current-mode PFC common-mode controller. The primary side current sensing and high performance dithering technique ensure ripple-free output current and wide dimming ranges. It also features a variable output power stage operating in CCM, allowing constant power operation over a wide range of input voltage and canopy temperature variations. The application field of the STEVAL-ILL035V1 provides a high system performance with excellent energy efficiency, reliability, and robustness.This application note explains the working principle and application field of the STEVAL-ILL035V1.

Working principle of STEVAL-ILL035V1 Evaluation Board

The STEVAL-ILL035V1 Evaluation Board is a LED driver suitable for multi-color LED control applications, such as general lighting and garden lighting. The evaluation board is based on STMicroelectronics’ STM8A MCU, the ST7C058A, which enables advanced features like dimming, monitoring and higher power outputs, while maintaining a high level of system performance and reliability.The board has a power stage, consisting of a step-down DC/DC converter operating in continuous current mode (CCM). This stage has a peak-current-mode boost PFC regulator, which allows the board to operate with current input voltages up to 400V. The output power stage with the STM8A controller is connected to a series of LEDs, enabling the board to accommodate both AC and DC inputs.The board also features an active regulation loop from the primary-side, allowing it to provide dimming capability. Moreover, the output voltage of the board can be adjusted to a wide range of values in order to make it applicable for various LED loads.Thanks to its advanced architecture, the STEVAL-ILL035V1 can Stresses a high system efficiency and offers long lifetime for the LEDs used in control applications.

Application field of STEVAL-ILL035V1 Evaluation Board

The application field of the STEVAL-ILL035V1 Evaluation Board is mainly focused on indoor and outdoor lighting such as general lighting, garden lighting and other applications.The board is capable of operating with input voltages up to 400V, which makes it highly suitable for applications that require a power supply capable of handling a wide range of input voltage. The board also features advanced dimming capabilities, which enables it to be used in applications that require precise control over the light intensity.The board features a high system efficiency, up to 90%, and superior power stage design, which makes it possible to deliver output power up to 250W. Thanks to its robust design, the board is capable of providing a reliable performance even in harsh environments.

Conclusion

The STEVAL-ILL035V1 Evaluation Board offers a high performance, reliable and robust solution for LED control applications that require a wide range of input voltages and precise dimming capabilities. It features advanced architecture which enables it to operate with input voltages up to 400V, as well as a high system efficiency of up to 90%. Its peak current-mode PFC regulator and active regulation loop are used to achieve ripple-free output current and wide dimming ranges. The board provides the perfect solution for indoor and outdoor lighting applications.

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