NCP81216MNTXG

The NCP81216MNTXG is a highly integrated DC/DC switching controller, specifically designed for use in wide-input industrial and consumer applications. The NCP81216MNTXG is a highly programmable current and voltage mode step-down controller, featuring integrated high-side and low-side MOSFET power switches, an adjustable output voltage tracker, an adjustable soft-start, an adjustable soft-stop current source, a correctable OV/UV option, and a power-good output. These features make NCP81216MNTXG an ideal choice for isolated or non-isolated DC/DC converters used in wide-input applications such as high-power LED drivers, DC-DC converter modules, robotics and high-efficiency fixed voltage supply applications.

The NCP81216MNTXG is based on a mixed-signal current mode control topology. It has a single current control loop, enabling precise dynamic voltage regulation. This device can regulate an output voltage from 0.75V to 40V, with a peak load current up to 30A, depending on the external MOSFET used in the system. The low-side (LS) MOSFET never carries the entire load current alone, which maximizes its power efficiency. The high-side (HS) MOSFET carries a non-zero portion of the load current, which ensures a balanced current sharing between the external MOSFETs.

The NCP81216MNTXG features a very accurate integrated current sensing circuit, allowing precise current-mode control with very stable output voltage regulation. This internal current sense makes it easy to achieve a wide-input operation, as there is not an external resistor divider required, making the system cost-effective. The current sensing circuit also features programmable current limit and programmable soft-start/soft-stop options, preventing any possible over-current conditions.

The NCP81216MNTXG also provides a frequency synchronization input, allowing it to be synchronized with the frequency of an external oscillator, thus providing a precise output voltage regulation. This synchronization feature can also be used to reduce the amount of EMI noise generated by the system. An external resistor is used to program the frequency of the internal oscillator for a wide range of applications.

The NCP81216MNTXG also offers a programmable output voltage tracking feature, allowing a designer to program an exact output voltage to match the requirements of the application. This feature is especially useful when the system needs to run at different loads or different input voltages, as it allows the controller to maintain a precise output voltage.

The NCP81216MNTXG provides a number of protection features, including over-voltage protection, adjustable short-circuit protection, and thermal protection. This makes the device suitable for use in wide-input industrial and consumer applications, where a high degree of protection is required. The device also provides a power-good output, which indicates when the output voltage is within the desired range.

Overall, the NCP81216MNTXG is a highly integrated, low-cost, and efficient DC/DC switching controller, offering a wide range of features and protection options, making it an ideal choice for a variety of applications. The integrated current sensing circuit and flexible control features allow designers to achieve precise control and output voltage regulation. The synchronization feature, programmable output voltage tracking, and programmable protection features also make this an excellent solution for wide-input industrial and consumer applications.