TPS54388EVM

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TPS54388EVM evaluation board is a member of the rapidly growing family of Wide-VIN buck controllers offered by Texas Instruments. The evaluation board is a DC-DC converter that is designed for buck operation. It can convert an input voltage from 4.5V to 36V into a regulated output voltage of 0.6V to 5.5V. The TPS54388EVM evaluation board is designed to quickly demonstrate the features of the TPS54388 wide-VIN buck controller in a typical application.

The TPS54388EVM evaluation board is powered from an external DC source. The output voltage is set using two multi-turn potentiometers. The voltage setting range of the potentiometers is between 0.6V to 5.5V. The output voltage is monitored and displayed on the voltage monitor output of the board. The board also has an enable input signal to turn the output voltage ON or OFF.

The operating principle of the TPS54388EVM evaluation board is based on the TPS54388, which is a synchronous buck controller optimized for wide input voltage operation. Using the external components and setting of the pins of the controller, the output voltage can be adjusted to different voltages.

The buck operation works by first applying the input voltage to the inductor and switching ON and OFF the inductor based on the controller’s logic. When the input voltage is high, the inductor produces a magnetic flux, that stored in the inductor, and the controller switches off the inductor and keeps it off for a fixed time interval. During this time interval, the stored magnetic flux will discharge through the output capacitor and produces the output voltage. In this way, the output voltage is based on the input voltage, the output capacitor, and the inductor. The controller senses the output voltage at all times and makes the necessary changes to ensure the output voltage is kept at the desired voltage.

The TPS54388 can operate with a wide input voltage range of 4.5 to 36V and a voltage output range of 0.6V to 5.5V. This makes it suitable for applications where the input voltage varies and the output voltage needs to be regulated. The device includes several protection circuits for both the switch and the control logic, making it suitable for harsh environments. Additionally, it includes current and power measurements which can be read from an external interface.

Overall, the TPS54388EVM evaluation board is an easy to use evaluation and testing platform for the TPS54388 Wide-VIN buck controller. With its wide input and output voltage range, as well as its high-performance protection and monitoring capabilities, it is suitable for a wide variety of DC-DC converter applications.

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