TPS549A20EVM-737

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The TPS549A20EVM-737 is an evaluation board designed to give designers a versatile, flexible platform to evaluate the performance and features of TI\'s TPS549A20 DC/DC buck-boost converter. The TPS549A20EVM-737 is an excellent design tool for applications that require an adjustable switching frequency up to 2 MHz, a wide input voltage range from 0.8 V to 6 V, and an output voltage range from 0.9 V up to 5.5 V.

The TPS549A20EVM-737 evaluation board is designed to accept an input voltage of 0.8 V to 6 V and provide an adjustable output voltage from 0.9 V up to 5.5 V. It features wide-range input voltage capability with a deep adjustable output voltage range and high efficiency. The device is capable of high-frequency switching up to 2 MHz to provide low output voltage ripple. The converter requires a minimum total system solution to maintain efficient and reliable operation. Additionally, the board has adjustable current limits and various input voltage and output voltage synchronization options.

In terms of working principle, the TPS549A20EVM-737 uses an internal synchronous MOSFET switch to step down and step up an input voltage source to provide a regulated output voltage. During power-on, the switch closes and begins to charge up the inductor. With the gradual rise in the inductor current through the switch, a magnetic field is created which is then collapsed when the switch is turned off. This causes a brief voltage spike on the output, Voltage Isolation Coil, which is then rectified by the rectifier diodes to supply the load. This isolated output forms a buck-boost topology. The current through the switch is then regulated to keep the output voltage at the desired level.

The major application field of the TPS549A20EVM-737 lies in industrial power supplies and point-of-load power regulation powered from universal AC and 20V/24V source voltage. Other applications such as LED lighting, battery chargers, automotive, power converters, and other portable electronic devices can also benefit from the board’s features.

The TPS549A20EVM-737 evaluation board also provides support for remote sensing for improved load regulation, output voltage margining, output overvoltage and overcurrent protection, as well as a 10-stage LDOs for additional output voltage stability for the load. In addition, the TPS549A20EVM-737 evaluation board provides exceptional features such as thermal shutdown, best-in-class efficiency, overvoltage detection, and substantially reduced operating noise.

Overall, the TPS549A20EVM-737 Evalutation Board is an extremely useful and reliable device for DC/DC and AC/DC (Off-Line) SMPS. It features wide-range voltage capability for the input and output, high switching frequencies up to 2MHz, adjustable current limit, overvoltage protection, and thermal shutdown. Therefore, the TPS549A20EVM-737 is ideal for both industrial power supplies and point-of-load power regulation applications.

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