LM5175EVM-HP

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The LM5175EVM-HP evaluation board is designed to demonstrate the capabilities and features of the LM5175 synchronous buck regulator in flyback topology applications. It utilizes integrated power stages to generate power up to 1.2 kW. The device allows a wide input voltage range and provides output power stages optimized for high power density and low cost of ownership applications.The topology chosen in the LM5175EVM-HP is a synchronous buck regulator with active OR-ing, suitable for applications where a high voltage is needed from input sources that require different voltages.

The integrated features of the LM5175EVM-HP include active OR-ing in a single-phase application, protected load switch, sleep-mode operation, synchronization, and power factor correction (PFC). In addition, the device allows for a wide input voltage range, which could extends up to 600 VDC, or up to VINmin peak on single phase applications. It also features an adjustable frequency that ranges from 100 kHz to 700 kHz.

The LM5175EVM-HP also has a PFC input current sensing amplifier, which allows for control of the current waveform and thereby reduces conduction losses. The PFC input current sensing amplifier can be configured to detect zero crossings in the input current, and is incorporated in the loop to avoid transient disturbances from the input current. In addition, it has an adjustable output voltage with external compensation, which allows the output voltage to remain constant despite varying loads.

The LM5175EVM-HP is powered by an external power source and can also be powered directly by a 3.3 V/1.8 V regulator. It is also equipped with an on-board isolated DC/DC converter to provide the necessary power for logic and support circuitry. The integrated OR-ing protection circuit prevents short circuits or overload faults from affecting the board, while the isolated DC/DC converter allows the AMC5175EVM-HP to operate over a wide range of input voltages.

The LM5175EVM-HP can be used to evaluate the performance of the LM5175, providing designers with the ability to test and verify the device’s performance in a variety of applications. In addition, the board is flexible and can be used to design custom applications. It includes probes and shunts for measuring current, as well as an output filter for measuring ripple voltage.

In conclusion, the LM5175EVM-HP evaluation board is a versatile and powerful tool to evaluate the performance of the LM5175 synchronous buck regulator in flyback topology applications. It is designed to provide designers with the ability to test and verify the device’s performance over a wide range of operating conditions. The LM5175EVM-HP also provides designers with the flexibility to design custom applications. With its large number of integrated features and external control options, the board can be used to evaluate the performance of the LM5175 in a variety of applications.

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