MAX31840EVKIT#

Series:	*
Part Status:	Active
Lead Free Status / RoHS Status:	--
Supplied Contents:	Board(s)

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The MAX31840EVKIT# is an evaluation board specifically designed for LED Drivers. It is a complete solution for driving LEDs for various applications such as portable, battery-powered and energy-installations.The MAX31840EVKIT# also supports higher voltage applications and can be used for higher resolution LED lighting, such as wall-mounted LED lighting.

Features

The MAX31840EVKIT# evaluation board features the following:

• Programmable current regulation up to 100mA
• External control for brightness, dimming and synchronization of multiple drivers.
• Compatible with Vin ratings from 3V to 25V.
• LED channel current sensing.
• LED channel temperature sensing.
• Extensive diagnostic capabilities.
• Automatic fault detection.
• Integrated boost and buck converters.
• Integrated frequency synchronization.
• Thermal overload detection and protection.
• Protection against transient voltages.
• Enhanced EMI control.

Application Fields

The application fields applicable with the MAX31840EVKIT# include drivers for portable, battery-powered, wall-mounted, and energy-installation related applications. These application fields include:

• LED lighting
• Automotive applications
• Building automation
• Industrial automation
• Medical applications
• Consumer electronic control systems
• Power management systems
• Robotics
• Instrumentation
• Internet of Things (IoT)

Working Principle

The MAX31840EVKIT# works by using the following steps:

1. Control input voltage is applied. This voltage is above the programmable current regulation threshold.
2. An internal power supply provides the power necessary for all the internal blocks.
3. The input signal is then passed through a voltage regulator and led to the output port.
4. The output port is then connected to the MAX31840 device. This device is responsible for controlling the LED current.
5. The MAX31840 device then passes the signal to the external LED driver. Depending on the application field the LED driver can be either DC-DC or AC-DC.
6. The LED driver then regulates the LED current according to the specifications determined by the MAX31840 device.
7. The LED driver is then responsible for driving the LED in an efficient manner.

Conclusion

The MAX31840EVKIT# is an evaluation board specifically designed for LED Drivers. It features programmable current regulation, an integrated boost and buck converters, extensive diagnostic capabilities, and automatic fault detection. The application fields supported by the MAX31840EVKIT# include drivers for portable, battery-powered, wall-mounted, and energy-installation related LED applications. The MAX31840EVKIT# works by the following steps: control input voltage is applied, an internal power supply provides the power necessary for all the internal blocks, the input signal is then passed through a voltage regulator and led to the output port, the output port is then connected to the MAX31840 device which is responsible for controlling the LED current, the MAX31840 device then passes the signal to the external LED driver, and then the LED driver is then responsible for driving the LED in an efficient manner.

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