TPS65170EVM-559

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The TPS65170EVM-559 is an Evaluation Module developed by the semiconductor company Texas Instruments, for the purpose of assessing the performance of their TPS65170 Power Management IC. The IC was designed to provide a comprehensive power-supply solution for the multi-rail power requirements found in a wide variety of systems.

The TPS65170EVM-559 belongs to the evaluation boards category of DC/DC and AC/DC (off-line) switched mode power supplies (SMPS). An SMPS is mainly employed for converting an alternating current (AC) power source into a direct current (DC) output. The TPS65170EVM-559, however, is a multi-channel converter that is specifically designed for the battery-powered applications of portable systems.

The TPS65170EVM-559 has several features that make it suitable for applications such as MP3 players, cellular phones, personal digital assistants (PDA) and portable gaming consoles. Firstly, the module has a very wide input voltage range of 3V to 6V, which is suitable for systems powered by lithium-ion and lithium-polymer batteries. Secondly, it supports a wide variety of output voltages, from 1.8V up to 6V, which means it can be used for a wide range of applications usigning both lower voltage and higher voltage components. Thirdly, it also has programmable current-limit and thermal-shutdown protection options to ensure safe operation in the event of overloads and over-temperature.

In terms of working principle, the TPS65170EVM-559 follows the conventional switched-mode power supply architecture, wherein the input voltage is converted into an AC signal that is then filtered, rectified, and regulated to obtain the DC output voltage. The module uses a full-bridge converter topology with a single inductor and two active-clamp circuitry for the synchronous rectification, while a dedicated on-chip voltage regulation circuit to maintains a fixed output voltage.

The module also features the innovative Automatic Input Voltage Selection (AUVS) feature, which allows it to automatically recognize and switch between two different input Vina optimized efficiency over the entire range and system startup time. In addition, an integrated voltage drop or a disabled low battery signal is also provided. That being said, the EVM can also be configured to support a single input voltage in order to prevent undesirable input voltage selection.

To summarize, the TPS65170EVM-559 offers a complete power management primary-side solution for battery-powered portable systems. It has a very wide input voltage range and output voltage levels, in addition to other features such as flexible current-limit settings, automatic input voltage selection, and integrated voltage drop. The module can thus be used for a variety of applications that require a reliable and efficient power supply solution.

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