THEVAL3503 Development Boards, Kits, Programmers

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THEVAL3503 is a highly integrated evaluation board specifically designed to drive LEDs. It offers a simple and fast way to demonstrate the ability of Ricoh’s LED driver devices. It is designed to provide a common platform to evaluate and test Ricoh’s LED driver devices in various LED backlighting modules. The evaluation board is capable of controlling up to four LED strings, with a maximum of 40 LEDs in one module. The board operates in a flexible, user-friendly manner, allowing users to customize their display with a variety of settings.

The THEVAL3503 has been designed to efficiently and accurately evaluate Ricoh’s LED driver devices. The board is equipped with 256KB of internal flash memory for storing the data, as well as a 16-bit μC for achieving control and communication of data between the device and the board. The board offers a wide range of features such as a switched LED voltage range of 0.5V–20.6V, a maximum LED current of 0.9A, a PWM resolution of up to 7 bits, and a 3-phase AC dimming capability of up to 7 kHz.

The THEVAL3503 also supports several advanced features, such as Multi-Zone PWM, Dual-Side Dimming, and Thermal Protection, as well as a wide color saturation range. Multi-Zone PWM is a feature that allows users to control multiple zones at the same time, enabling users to adjust different colors for different areas of the display with high accuracy and low power consumption. Dual-Side Dimming is a feature that enables users to adjust the brightness of their display from two sides, allowing for greater precision and flexibility. The THEVAL3503 also includes a Thermal Protection feature that helps protect the LED drivers from overheating while in use.

The working principle of the THEVAL3503 board should be understood in order to properly set up and use it. The board is powered by 24 Vdc and provides four independent output channels that can be used to control four LED strings. Each LED string can be connected to a common LED voltage line or drive multiple LED strings. The board also provides a step-up voltage regulation feature which is able to increase the LED voltage up to 20.6V. The output of the regulated LED voltage can be connected to the LED string to power the LED. The board also consists of a constant current sink, which can be used to increase the accuracy of the LED current supplied to the LED string. The board also offers a 16-bit μC that is used for controlling the board and for programming the on-board memory.

The THEVAL3503 board also includes a power switch as well as a master reset button. The reset button must be used to reset the board after each and every change of the operating conditions. Furthermore, the power switch can be used to switch between Vdd and Vdc, thereby allowing the board to be powered with either an AC or DC source. For successful operation of the board, the user must pay attention to the polarity of the supply voltage.

The THEVAL3503 is a powerful and versatile evaluation board which provides an easy and intuitive way to demonstrate the capabilities of Ricoh’s LED driver. The board offers several advanced features, such as Multi-Zone PWM, Dual-Side Dimming, Thermal Protection and a wide range of color saturation, which can help designers to produce high-quality LED backlighting solutions for their applications. It is important for the user to understand the working principle of the board before using it, in order to make sure that the board is used effectively and safely.

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