TPS40210EVM

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The TPS40210EVM evaluation board is a great example of a DC/DC and AC/DC off-line switch-mode power supply (SMPS). The aim of the board is to demonstrate the features of the TPS40210 synchronous buck controller, and its typical applications include high-efficiency power supplies for battery-powered and other low-noise applications.

The TPS40210EVM board is equipped with two input voltage ranges, and a set of outputs suitable for a variety of system voltages, such as 5V/3.3V/1.8V. The board includes a high-density thin-film switch, plus an inductor, capacitors, resistors, and diodes chosen specifically for the application. The board also has a wide-input voltage range, between 6V and 28V, to ensure compatibility with a variety of mains and other widely-used power supplies.

The board\'s main features and benefits include:

• Wide 6V to 28V input voltage range
• 5V/3.3V/1.8V output powered by dedicated switching FETs
• Meets EN61000-3-2, CISPR22 class B, and FCC Part 15 class B
• Operates from a 3.3V supply up to 4.5V
• Switch-mode power supply for flexible power delivery
• Optimized for high-efficiency and low power dissipation
• auto-restart mode protects against short-circuits, over-voltage, and over-current

The working principle of the TPS40210EVM is based on the well-established switch-mode power supply (SMPS) design, which typically consists of a power converter, a control circuit, and a feedback circuit. The power converter is responsible for converting the input voltage into a series of pulses with controlled amplitudes and timing. The control circuit adjusts the pulse frequency and amplitude to ensure the correct output voltage. The feedback loop is responsible for detecting any fluctuations in the output voltage and adjusting the converter accordingly.

The TPS40210EVM board uses synchronous rectification, which is a method of controlling power FETs so that the switching losses in the power stage are minimised, thus achieving the highest possible efficiency of the power supply. Also, the TPS40210EVM includes programmable soft-start and auto-restart modes to protect against short-circuits, over-voltage, and over-current.

The board is suitable for a wide range of applications, such as industrial, computing, consumer, telecom, and automotive. In consumer and comuting applications, the board can be used to provide high-efficiency power delivery up to 5V/3.3V/1.8V. In industrial and automotive applications, the board can provide high-power and reliable power supply for any type of application demanding high-power. In addition, the board is suitable for low-noise operations, such as medical and audio applications, as it uses synchronous rectification for reduced switching noise.

In conclusion, the TPS40210EVM is a highly versatile board that enables designers to easily build high-efficiency power supplies with wide input voltage range, low power consumption, and robust protection features. With its wide range of features, the board is suitable for any application demanding high-efficiency and reliable power delivery, such as computing, industrial, consumer, telecom, and automotive applications.

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