LM27761EVM

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The LM27761EVM is an evaluation board specifically designed for use in studying the performance characteristics of DC/DC and AC/DC (Off-Line) switching mode power supplies. It is a low cost, low noise, and low power device that can be used in a wide variety of applications. The board is designed to be used with a special power supply solution and is ideal for evaluating and validating power supplies for various applications.

At the heart of the LM27761EVM lies the integrated controller IC LM27761. This IC contains all the necessary control, monitoring, and protection circuitry for the power supply and can be configured to work in either a buck or boost configuration. In addition to the controller IC, the board also contains an input filter, a voltage regulator, and a pair of half-bridge MOSFETs for the power MOSFETs. Additional components on the board include input rectifiers, a pair of buck/boost converter diodes, and snubber components. All these components are pre-installed on the board and wired according to the schematic.

The LM27761EVM also includes an embedded software package with all the necessary tools to quickly prototype the power supply design. The software includes a circuit simulation program, a sample program, and a power supply configuration utility (PSC). The simulator can be used to model the input and output power stages of the LM27761, allowing the designer to accurately predict the behavior of the power supply under different operating conditions. The sample program allows the designer to quickly test the circuit before loading the final design onto the board.

The voltage regulator in the LM27761EVM provides power to the controller IC and all other components on the board. The voltage regulator can be controlled using an external voltage source or an internal voltage reference. The internal voltage reference can be set to either an adjustable or fixed voltage level. With the adjustable setting, the voltage reference can be adjusted to match the input power source, providing a stable output voltage for the device.

Once the power supply has been designed, the PSC utility can be used to configure the power stage of the LM27761. This configuration can be used to control the power MOSFETs, the snubbers, and the current-limit protection. If desired, the PSC can also be used to configure the voltage regulator to provide a stable output voltage. The result is a complete power supply solution for various DC/DC and AC/DC (Off-Line) applications.

The LM27761EVM is an excellent choice for prototyping and validating power supply designs for various application fields. The board provides a low-cost solution to evaluate a variety of different operating conditions, such as power up/down sequencing, transient response, and current limiting protection. In addition, the board is small enough to be used in a variety of applications, including cell phones, automotive electronics, and communication systems. With its integrated controller IC, the LM27761EVM is a great choice for evaluation of DC/DC and AC/DC (Off-Line) switching mode power supplies.

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