NCP781BMN050TAG

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NCP781BMN050TAG is a voltage regulator under the Linear voltage regulator category of PMICs (Power Management IC). It is a two phase output step-down regulator, which supports multiple operating modes including Burst Mode operation, PWM operation and Forced PWM operation.

This device features an internal power MOSFET along with its Burst Mode control, and is designed for applications such as DSPs, CPUs, FPGAs, ASSPs, and network processing units, which require an advanced system of power control and monitoring. This regulator is intended for use in applications where output ripple, noise, and input capacitance requirements are strict.

Application Field

NCP781BMN050TAG is mainly used for powering systems that include load types that require conversion from higher input voltage to lower output voltage. The applications include not only CPUs, FPGAs, and ASSPs, but also High Speed Foxconn optical ports (HSPs) and USB 2.0 ports. This device can be used in other applications where high efficiency, small footprint, and long life span is expected, such as PLCs, photo sensors, and LED lighting applications.

It is also an excellent choice for automotive and industrial applications, since it can withstand electronic noise and wide input voltages (4.5 to 36V). Its high efficiency of up to 95% and higher current rating also make it an energy-saving solution for these applications.

Working Principle

NCP781BMN050TAG adopts a synchronous buck architecture, with the advantage of high conversion efficiency. This regulator has two main reference voltages – VREF1 and VREF0. When VREF1 is higher than VREF0, the internal power MOSFET will turn on, allowing the voltage to pass through. On the other hand, when VREF1 is lower than VREF0, the internal power MOSFET will turn off, preventing the voltage from passing through.

It uses an advanced Cicuitry Lossless Transient Regulation Device (CLTRD) mode of operation. This helps the device to adjust its output voltage in response to the load requirements, thus resulting in improved overall system efficiency. The CLTRD mode also helps to reduce switching frequency of the internal power MOSFET, thus increasing its life span.

This device also features a three-phase PWM boost control mode, which provides clean and fast PWM operation and can be used in both standalone and multi-output applications. Additionally, this regulator allows automatic cycle-by-cycle current limit protection. This helps to protect the system from current overloads and under-runs.

Overall, NCP781BMN050TAG is a high power regulator ideally suited for a wide range of applications requiring high efficiency, long service life, and a small footprint. Due to its advanced features and reliable performance, it can provide power to systems that require clean and precise power supply.

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