TPS61042EVM-226

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TPS61042EVM-226 is part of a family of evaluation boards for LED drivers. This board is a PWM controller for driving an LED without an additional current-limited circuit. Its simple design consists of a main integrated power MOSFET, a microprocessor-based driver, an external voltage-controlled switching regulator, resistors and capacitors to form a boost switch-mode power supply.

The evaluation board supports both continuous and dimming LED control and works at a 0.25A LED current with a 7V to 25V input voltage. It features an adjustable switching frequency (SF) pin, which controls the switching frequency of the regulator, allowing it to be adjusted between 25KHz and 340KHz to suit various applications. This board also features a temperature sensing module to detect temperature variations and automatically regulate the power output accordingly.

The TPS61042EVM-226 is designed to work in conjunction with a microprocessor and requires an external 12V DC power source. It is capable of providing up to 1.2W of light output and is used for applications such as room lighting and traffic light control. The board can also be connected to a controller to allow for dimming and other control functions.

When connected to a controller, the evaluation board can be used for dimming applications. The board contains four modes of dimming operation: pulse width modulation (PWM), pulse frequency modulation (PFM), active current loop control (ACC), and voltage level control (VLC). In PWM mode, the controller provides a Pulse Width Modulation signal to the board. This will adjust the duty cycle of the signal which in turn affects the current/power output of the board. In PFM mode, the controller provides pulse frequency modulation (PFM) to the board, allowing the user to specify a certain frequency level and operate the board at that particular frequency.

In ACC mode, the controller sends a signal to the board which controls the output current level of the power supply. In VLC mode, the controller sends a signal to the board which regulates the output voltage of the power supply. The board will also monitor the voltage input of the LED and automatically adjust the output voltage as required.

The TPS61042EVM-226 evaluation board is a versatile LED driver with many applications. It is suitable for LED lighting applications such as LED street lights, LED displays, LED indicators, LED shelves, LED backlights, and LED emergency lights. It can also be used in industrial applications such as remote monitoring and control and motion detection. This evaluation board offers an excellent solution for driving LEDs safely and efficiently in any application.

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