LMR14050SEVM

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The LMR14050SEVM evaluation board is a great choice for those looking for a precise power supply in an off-line switching mode. This board can be used for point-of-load (POL) and DC/DC supplies, and its patented architecture allows it to be used in a wide range of applications within the industrial segment.

The board consists of an input stage, a controller, a power stage, some protection circuits and a feedback loop. The input stage is designed to accept 6V to 18V input sources, such as AC-inputs up to 2.9A and DC-inputs up to 5.8A. This stage is also extremely tolerant to voltage spikes, which makes it a great choice for applications in harsh environments.

The feedback loop is provided for closed-loop control of the output voltage and for overall system stability. This loop consists of a sensing circuit connected to the output node, a comparator, and the appropriate compensation components. The feedback loop also allows for a very precise adjustment of the output voltage setting up a range of 0.8V to 28V.

The controller is composed of two parts: an isolated digital controller and an analog controller for the internal loop compensation. The isolated digital controller drives an isolated gate driver, which in turn drives the power stage. This stage is composed of two N-Channel MOSFETs and two H-Bridge Paths, which provide power to the output driver ICs.

The LMR14050SEVM evaluation board also contains a number of protection circuits, such as thermal protection, current limit, short-circuit protection, under-voltage lockout, and over-voltage protection, all of which are monitored by the microcontroller and can be enabled or disabled as needed.

The board also has a number of features designed to maximize efficiency and stability. A phase-shift oscillator, adjustable soft-start, frequency-hopping, synchronous burst mode, and dynamic control of the switching frequency are all available to optimize the efficiency and reduce the EMI/RFI of the system.

Overall, the LMR14050SEVM evaluation board is an excellent choice for those looking for a precise off-line switching power supply. Its versatile design, wide input voltage range, precise output voltage setting, and wide range of protection circuits make it a great option for any project requiring an efficient and reliable power solution.

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