PT78NR110ST

DC-DC converters are useful in applications where a device is required to provide power from source voltages that are often much higher than the device’s permissible operating voltage. The most commonly used type of DC-DC converter is the switched mode power supply (SMPS). The PT78NR110ST is a high-efficiency DC-DC converter that is commonly used in applications such as cellular handphones, computer peripherals, household appliances, and medical equipment.

The PT78NR110ST uses a step-down buck converter topology. A buck converter takes an input voltage that is higher than the desired output voltage and converts the voltage to a lower value. It is essentially a circuit that steps the voltage down by continuously switching the input between two different levels. The switching is done by two transistors - an N-channel MOSFET and a P-channel MOSFET. When the N-channel MOSFET is on, the input voltage is connected to the output and current flows through the inductor. When the P-channel MOSFET is on, the output voltage is disconnected from the input and the current is stored in the capacitor.

The PT78NR110ST converter is capable of output levels ranging from 0.75 volts to 4 volts, and can deliver up to 7.5 watts of power. It has a high efficiency of over 97% at high loads, which makes it ideal for applications that require high power delivery over low voltage ranges. It operates at a switching frequency of 1.2MHz, which minimizes the size of the output filter components and reduces the amount of power dissipation in the converter. It also includes protection features such as over-current, over-temperature, and short-circuit protection that ensure safe operation of the unit in the event of an overload.

In addition, the converter is designed to be protected against transient voltages caused by ESD or electrical surges. This is achieved by an integrated ESD protection circuit that limits over-voltage spikes to protect the converter from potentially damaging voltages. The converter also features a wide input voltage range of 4.5V to 20V, allowing for flexible operation of the converter in a wide variety of applications.

Overall, the PT78NR110ST DC-DC converter is an ideal solution for applications that require high power delivery over a wide input voltage range. Its high efficiency, low power dissipation, and robust protection features make it suitable for applications requiring robust and reliable power conversion.