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Evaluation and Demonstration Boards and Kits

MAX9670EVKIT+ is designed for accurate illumination control in the automotive and industrial lighting environment. This evaluation kit enables users to quickly evaluate the MAX9670 constant current LED driver. This evaluation kit also enables access to advanced features of the MAX96702 such as integrated overcurrent shutdown, adaptive overshoot control, and soft-start ramp-up.

The MAX9670EVKIT+ is designed to provide an easy-to-use evaluation platform for customers to quickly evaluate and optimize designs based on the MAX9670 Constant-Current LED Driver. The MAX9670 provides 5A peak, 2A continuous, constant current LED regulation from an input voltage range of 6V to 42V (48V max). The MAX9670EVKIT+ includes an LED driver board populated with the MAX9670 device, 4-switch manual control board, two-terminal 3A max power supply, an AC/DC power adapter, 2-pin jumper cables, and a Philips® Luxeon Rebel LED.

Applications

The MAX9670EVKIT+ has a wide range of applications. It is ideal for automotive and industrial LED lighting applications, where accurate current control is required. The MAX9670EVKIT+ allows for quick and precise evaluation and optimization of LED driver design, therefore making it a valuable tool for automotive engineers and industrial designers. Additionally, the MAX9670EVKIT+ is also suitable for LED displays, signage, and work lamp lighting applications.

Device Overview

The MAX9670EVKIT+ is based on the MAX9670 Constant-Current LED Driver. It is a linear regulator with integrated overcurrent and overtemperature shutdown. The MAX9670 provides peak output current up to 5A with input voltage of 6V to 48V. The device features adjustable LED current, switchable input, 90%-95% efficiency, and adaptive overshoot control. Additionally, it also includes soft-start ramp-up, frequency modulation, and overvoltage protection.

Features

• Wide input voltage range (6V to 48V)
• Output current up to 5A
• Adjustable LED current (0.5A to 5A)
• Soft-start ramp-up
• Frequency modulation
• Integrated overcurrent and overtemperature shutdown
• Adaptive overshoot control
• Overvoltage protection

Working Principle

The MAX9670EVKIT+ utilizes an integrated voltage regulator to maintain the LED current at a specified level. The MAX9670EVKIT+ contains an inductor and a sense resistor, which are connected to the integrated voltage regulator and the LED driver. The inductor is used to store energy when the load is switched on, while the sense resistor monitors the LED current. When the LED current rises above or falls below the desired level, the sensed voltage across the sense resistor varies, and the integrated feedback regulator adjusts the LED current to match the programmed level.

In automotive and industrial lighting applications, the integrated IC protection is very important. The MAX9670EVKIT+ provides integrated overcurrent and overtemperature protection, as well as an adaptive overshoot control. The integrated overcurrent protection will prevent over-driving the LED, while the overtemperature protection guards against thermal failures. The adaptive overshoot control is used to minimize the inrush current when the LED driver is initially powered on, thus prolonging LED life.

Conclusion

The MAX9670EVKIT+ is an ideal evaluation platform for automotive and industrial LED lighting applications. Its features include adjustable LED current, integrated overcurrent and overtemperature shutdown, adaptive overshoot control, soft-start ramp-up, frequency modulation, and overvoltage protection. The MAX9670EVKIT+ enables engineers and industrial designers to evaluate and optimize LED driver designs in a quick and accurate manner.

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