LM2695EVAL

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The LM2695EVAL is a monolithic synchronous buck regulator from Texas Instruments, designed for high efficiency off-line, DC/DC and AC/DC power supply applications. While the regulator operates over a wide input voltage range, the device can be precisely regulated to an output voltage that is 0.8V lower than the nominal supplied input voltage. The low-noise output voltage of the device is adjustable with a single external resistor in increments of 1%.

In order to achieve high efficiency and low cost, the LM2695EVAL employs an innovative technique called synchronous rectification. This technique takes advantage of the nature of power transistors to switch higher current while operating in their linear mode. By synchronizing the power switches of the regulator and rectifying the switching losses, the overall efficiency of the regulator is improved. In addition, the switch conditions are void of any additional active components that require power.—

The working principle of the LM2695EVAL involves the use of two power switches, an inductor, and a few additional passive components. The converter works by initiating the two transistors simultaneously with a positive input voltages and then switching them off and on at a predetermined rate, which is determined by the output voltage. As the transistor switches back and forth, the energy stored in the inductor is converted to a regulated output voltage.

When the transistor is off, the input voltage will normally be higher than the output voltage. This is because the energy stored within the inductor will be dissipated as heat. When the transistor is turned on, the inductance will start charging and the output voltage is reduced from the higher input voltage. This allows the LM2695EVAL to regulate the output voltage with fine increments of 1%.

The LM2695EVAL can be used in a wide variety of applications, such as DC/DC converters, AC/DC converters, and buck power supplies. It is suitable for applications ranging from low-power low-output voltage converters to high-power medium-output voltage converters. The device is capable of operating over a wide range voltage input range from 2.5V to 17V and can deliver output currents up to 3A.

In addition to the wide input range, the device offers thermal protection, short-circuit protection, and overvoltage protection. This makes the LM2695EVAL suitable for use in commercial and automotive applications. The device also features low-operating voltage ripple, fast load transient response, and is highly efficient over a wide load range.

The LM2695EVAL is a versatile and easy to use evaluation board and can be used to develop a variety of AC/DC and DC/DC converters and power supplies. With its high efficiency, low noise output, adjustable output voltage, and various other features, the device is a perfect solution for many applications. Whether you are looking for an innovative way to power your project or are searching for a reliable DC/DC and AC/DC converter, the LM2695EVAL is the answer.

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