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LM2700MT-ADJ/NOPB Application Field and Working Principle

LM2700MT-ADJ/NOPB is a DC-DC switching regulator that can provide power conversion from a wide input voltage range. It is designed for industrial, medical, and telecom applications, providing excellent system efficiency and a wide array of features. It can be used in a variety of applications, including motor control, distributed power systems, and industrial control. The LM2700MT-ADJ/NOPB is a versatile switching regulator which combines the best of several technologies in one IC package.

Overview of Features of LM2700MT-ADJ/NOPB

The LM2700MT-ADJ/NOPB is a highly integrated two-phase DC-DC switching regulator that integrates two buck controllers and two synchronous buck MOSFETs in one IC package. It has an adjustable output voltage up to 36V. The LM2700MT-ADJ/NOPB has minimal external components, supports a wide range of input voltages from 4.5V to 36V, and provides up to 2A of output current.In addition to its high power capabilities, the LM2700MT-ADJ/NOPB also features a low quiescent current of only 30uA, making it ideal for use in low-power applications. It also has an adjustable switching frequency up to 2.25MHz, allowing for fast transient response and high efficiency. The LM2700MT-ADJ/NOPB also includes an integrated chip-enable controller that can control the output voltage and power-on synchronization between multiple DC-DC switch regulators.

Applications

The LM2700MT-ADJ/NOPB is suitable for use in a wide range of applications, including industrial control, motor control, distributed power systems and medical devices. It can be used to regulate the output voltage of DC-DC converters, power supplies, motor drivers and other applications with wide input voltages and high current requirements. It is also highly suitable for use in distributed power systems, where it can be used to provide multiple outputs (up to 36V) from a single input voltage.

Working Principle

The LM2700MT-ADJ/NOPB is a two-phase synchronous buck DC-DC switching regulator. Its working principle is based on two-phase interleaving, where two MOSFETs are driven separately and the output voltage is regulated by changing the duty cycle of the two phases. The two phases can be used to reduce the ripple current to improve system efficiency and reduce output voltage noise. The two driving MOSFETs are separately driven by two switching controllers, dubbed the high-side MOSFET and the low-side MOSFET. When the LM2700MT-ADJ/NOPB is first turned on, the low-side MOSFET will turn on and the high-side MOSFET will remain off. After a predetermined amount of time, the high-side MOSFET will also turn on and the low-side MOSFET will turn off, and this cycle will repeat. The output voltage is regulated by the duty cycle of these two MOSFETs, and the time period of the cycle can be adjusted by the external feedback resistor.

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