LM5118-4-SWXEVM

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The LM5118-4-SWXEVM evaluation board from Texas Instruments provides an evaluation of its LM5118 low voltage high current isolated DC/DC converter, with multiple output voltage options and adjustable output current. The board operates over a wide input voltage range, from 4 V to 60 V with up to 32 A peak current output. It can be used for a wide range of applications in motor drive systems, industry automation, robotics, off-grid power systems, distributed power architectures and many more.

The design of the LM5118-4-SWXEVM board makes it suitable for both steady state and high frequency power distribution. The board has integrated protection circuits for both input and output, along with monitoring and control circuits to allow for an accurate evaluation of its performance. It also has an integrated cooling fan to ensure optimal operation, and can be used with an external temperature sensor for system level performance evaluation. The board can also be used in a standalone system, or integrated into a larger system.

The LM5118-4-SWXEVM board’s working principle is based on an insulated gate bipolar transistor (IGBT). The board uses an innovative dual-switch-mode topology, the power-factor-corrected (PFC) buck type regulator, and operates at a high switching speed, with switching frequencies up to 70 MHz. The integrated PFC allows for higher efficiency and improved system power quality, and its high switching frequency enables higher power density. The board is equipped with active-clamp functionality, which allows for precise, low noise and fast regulation of power inputs and outputs.

The LM5118-4-SWXEVM board is also robust, featuring a switching frequency jittering function to ensure low EMI, and thermal shut-down protection for robustness against overloads. Additionally, it supports soft start, over-voltage and reverse current protection, lossless system integration and dynamic current sharing. The board also features a variety of diagnostic features, including current and voltage monitoring, on/off and thermal protection, and fault identification.

In conclusion, the LM5118-4-SWXEVM is an advanced and comprehensive evaluation board for low voltage high current isolated DC/DC converters. It is equipped with an integrated cooling fan and active-clamp functionality for precision regulation, and features robust features such as switching frequency jittering, fault diagnosis and dynamic current sharing. The board supports a wide input voltage range, from 4 V to 60 V, and can be used for a wide range of applications, such as motor drives, industry automation, robotics, off-grid power systems, distributed power architectures and many more.

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