NCV51411MNR2G Integrated Circuits (ICs)

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NCV51411MNR2G is a high-performance synchronous buck converter, offering multi-mode operation, high ripple current capability and true diode emulation mode at light load. It also provides a minimum support of 1.8V and is designed to deliver very low up-time and minimum switching droop. The NCV51411MNR2G is ideal for applications such as server and storage, allowing small form factor, low power solutions and high efficiency in the entire range of load currents. It features a wide input voltage range of 4.5V to 14V and an output voltage of 0.8V to 4.2V with up to 10A maximum. The current limit, voltage limit and power-on enable are all programmable.

The NCV51411MNR2G has several features that enable it to be used as a low-power voltage regulator with wide input voltage range. It includes output voltage tracking, load transient immunity, adjustable current limit and short-circuit protection. The device has a very low quiescent current in discharge mode for optimization of power efficiency and thermal management.

The NCV51411MNR2G has an integrated power stage with dual N-channel MOSFETs and a controllable low-side MOSFET in a single package. The device operates at a 500kHz switching frequency and can be synchronized using an external clock signal. It also features current-mode control, early turn-on ramp, adaptive frequency foldback and a voltage-mode control loop.

The power switch can be programmed to turn off at light load with true diode emulation which eliminates the need for an external diode. The device supports both open drain and push pull configurations and offers over temperature protection and soft-start to prevent overloading of the voltage regulator. It also has programmable output voltage and power-on reset features.

The NCV51411MNR2G is ideal for a variety of controlled power supply applications with power requirements of up to 10A at a 0.8V to 4.2V output. It is used in laptops, portable computers, controllers, robotics, communications and instrumentation equipment, and medical devices, as well as in consumer products requiring high efficiency and high power density.

The NCV51411MNR2G adopts a Power-over-Time mode of working and uses a hysteresis-contraction module to automatically adjust the output voltage of the converter by time-based control. The hysteresis-contraction module consists of an error amplifier, Phase Comparator, Pulse Generator, and an Excitation Direction Selector. The Error Amplifier compares a reference voltage, generated by an external divider, with the input voltage, while the Phase Comparator compares the signal from the error amplifier with the Pulse Generator.

The Pulse Generator generates an output signal whose pulse width is adjustable by an analog signal representative of the output voltage demand, and the Excitation Direction Selector directs the Pulse Generator output to the appropriate power switch. This mode of operation provides for very fast current regulation and is well-suited for applications that require a wide input voltage range and fast dynamic response. The NCV51411MNR2G also includes a user-programmable current limit that can be set from 1.5A to 10A with 16 discrete steps.

The NCV51411MNR2G is a robust and reliable voltage regulator that stands out for its low up-time, minimum switching droop and high ripple current capability. Its wide input voltage range from 4.5V to 14V is ideal for applications such as portable computers, controllers and robotics. The NCV51411MNR2G is the perfect regulator to the job and ideal for high performance, low form factor and low power solutions.

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