NMV1515SC

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DC DC Converters are an essential component for many power applications available in a variety of packages. The NMV1515SC stands out among the options because of its features and ease of use. In this article, we will discuss the applications for this and its working principle.

Applications of the NMV1515SC

The NMV1515SC is a synchronous step-down DC-DC converter designed to produce a regulated output voltage from an input voltage of up to 28V. It is ideal for applications such as 24V systems, communication systems, distributed power systems, automotive systems, battery powered systems, and more. The wide input voltage range, low quiescent current (4.5uA) and high efficiency (up to 95%) make the NMV1515SC a great option.

The converter has two 150mOhm integrated MOSFETs capable of providing up to an 8A continuous output current and features a fixed 3MHz switching frequency. This reduces board space, decreases audible noise, and eliminates the need for a heat sink. The converter can also be configured as a step-up, step-down, or as a buck-boost converter.

The NMV1515SC also features constant frequency current mode control to guarantee a fast response and constant loop stability. It also incorporates a number of protection features to ensure that it operates safely and efficiently. These include cycle-by-cycle current limit, thermal shutdown, input under-voltage lockout, and output voltage tracking.

Working Principle

The NMV1515SC is a synchronous step-down DC-DC converter designed to produce a regulated output voltage from an input voltage of up to 28V. The converter works by using two power switches, an inductor, and a capacitor to transfer energy from the input voltage source to the output voltage load. The two power switches switch on and off in a repeating sequence to transfer energy from the input to the output. When the switch is on, energy is stored in the inductor and when it is off, energy is released from the inductor.

As the input voltage varies, the current flowing through the inductor varies as well. The varying current through the inductor creates a varying magnetic field which, in turn, induces an additional voltage across the inductor.This additional voltage is used to regulate the output voltage, allowing the converter to maintain a constant output voltage regardless of the input voltage.

The NMV1515SC also features constant frequency current mode control. This means that the current through the inductor is derived from the difference between the input voltage and output voltage multiplied by a reference current. This current is then compared to the actual inductor current to regulate the output voltage, allowing for a constant output voltage across a wide range of input voltages.

Conclusion

The NMV1515SC is a great step-down DC-DC converter with a wide input voltage range, low quiescent current, and high efficiency. Its features, such as constant frequency current mode control, cycle-by-cycle current limit, thermal shutdown, input under-voltage lockout, and output voltage tracking, make it an ideal solution for many power applications. The NMV1515SC is a great option for 24V systems, communication systems, distributed power systems, automotive systems, battery powered systems, and more.

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