STEVAL-ILL059V1

Introduction

The STEVAL-ILL059V1 Evaluation Board (EVB) is a compact platform designed and configured to demonstrate the functionality and use of the STP8CL20N6 IC, a low-voltage, AC line-powered, dimmable LED driver. This EVB includes a high-efficiency AC/DC controller circuit and a cost-effective polyphase ac-link dimming circuit. Power factor control (PFC) and energy harvesting techniques are also present. The dimming is fully programmable using onboard DIP switches.

The STEVAL-ILL059V1 EVB is part of the Evaluation Boards - LED Drivers category. This type of EVB is designed to enable designers to implement power supply designs with minimal effort, allowing them to evaluate various parameters in order to make comparisons and evaluate performance. It also allows for prototyping and testing of various LED driver configurations.

Applications

The STEVAL-ILL059V1 EVB can provide power factor correction up to 0.9 while reducing harmonic distortion. This can simplify the implementation of a reliable power system and is suitable for residential, commercial and industrial lighting applications such as LED lighting, home appliance control systems, emergency lighting, and other applications. Additionally, the EVB can provide over-voltage protection and short-circuit protection, allowing it to accommodate operating conditions in extreme environments.

Working Principle

The STEVAL-ILL059V1 EVB is designed using the STP8CL20N6 IC, which is based on a hysteretic control topology. This enables the device to provide a cost-effective ac-link dimming solution that eliminates the need for a power factor correction stage. It works by converting the incoming sinusoidal AC main into DC and then rectifying it to provide a high-efficiency power conversion. The dimming is made possible by the four-step modulation of the output voltage. The output voltage can be adjusted by varying the width of the pulse-width modulated (PWM) waveform. This can be easily done using the onboard DIP switches.

The EVB also provides two levels of protection: over-voltage protection (OVP) and short-circuit protection (SCP). The over-voltage protection prevents high voltages from damaging the device due to improper operation or unexpected surge voltages on the input supply. The short-circuit protection ensures that the system does not shut down when the output load is shorted.

Conclusion

The STEVAL-ILL059V1 EVB is an ideal platform for evaluating and testing LED driver configurations. It is based on the STP8CL20N6 IC and provides a cost-effective and efficient solution for residential and commercial lighting applications. It provides over-voltage protection, short-circuit protection, and AC-link dimming, enabling users to effectively evaluate the performance of the system and make comparisons with other configurations. This EVB is a great demonstration of the versatility of the STP8CL20N6 and is suitable for a wide range of applications.