TPS544B25EVM-681

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The TPS544B25EVM-681 is an evaluation module (EVM) for the TPS544B25 synchronous step-down DC/DC power converter. It is a low-voltage, high-current, non-isolated buck converter with an input voltage range of 8.6 V to 36 V and an adjustable output voltage from 0.6 V to 25 V capable of delivering up to 6 A of output current. In addition, it offers the highest level of efficiency to minimize heat-related losses and reduce stress on components and systems.

The TPS544B25EVM-681 Eval Mod differs from other similarly-named EVMs in the portfolio by not having an accompanying graphical user interface (GUI) and user manual. It is an easier to use module, intended as a reference design platform to demo the various features and benefits of TI’s TPS544B25 buck converter which offers superior performance in comparison to many of the design requirements for demanding automotive applications.

The TPS544B25EVM-681 works on the principle of the Paralleling Synchronous Buck Converter that uses a high-frequency control signal to drive two switches, a high-side N-FET named “H”, and a low-side P-FET named “L”. The controlling logic uses a current-mode control loop with programmable maximum duty-cycle to optimize converter efficiency at light loads. It also includes protection features like over-temperature, under-voltage and over-current protection.

The TPS544B25EVM-681 can be used in a wide variety of applications in automotive, industrial, and medical fields, such as DC/DC converters in motor control for AC and DC motor drives, in battery charging systems, in 48V on-board chargers and in industrial robotics. It can also be used as an AC/DC buck converter for on-board aircraft and automotive power systems and as a DC/DC power supply for remote radio frequency (RF) infrastructure. In addition, the application field of the TPS544B25EVM-681 is further expanded by its capability to handle large capacitive loads.

In conclusion, the TPS544B25EVM-681 is a synchronous step-down DC/DC power converter. It is designed to operate in a wide range of input voltages, from 8.6 V - 36 V with adjustable output voltage from 0.6 V - 25 V. The converter uses current-mode control with programmable maximum duty-cycle to optimize efficiency at light loads. It has a wide application field, including DC/DC converters for motor control, battery charging systems, RF infrastructure, industrial robotics and AC/DC buck converters.

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