PT6719C

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DC-DC converters are used in a variety of applications. The PT6719C is one such product. This DC to DC converter can provide an output voltage range from 9 to 72V, with an output current up to 8 A. The unit has built-in overvoltage, overcurrent, and thermal protection and is designed to reduce conducted and radiated emission. PT6719C can work with wide range of input power combinations, from low voltage and high current to high voltage and low current applications.

The PT6719C is a flyback converter design. The basic operation of flyback converters is that a transformer stores magnetic energy during the input voltage conduction and then uses this energy to provide the output voltage during the off-time of the primary switch. As a result, the output voltage is controlled by the primary switch on and off times. The integrated circuit regulates the voltage output with a current mode control system.

The PT6719C starts by activating the primary switch that allows the input voltage to flow to the transformer. The transformer stores the energy in the magnetic field, while the load voltage is maintained at its set value by the current mode control\'s feedback loop. Once the primary switch is off, a diode D1 rectifies the output voltage of the transformer and allows the output voltage to be supplied to the load. The output voltage is then monitored and compared to the reference voltage with the help of the non-inverting and inverting inputs of the driver IC (PN1). The primary switch is activated when the feedback loop has reached a certain threshold and will remain activated while the feedback loop is below the threshold. As a result, the primary switch is cycled on and off in order to maintain the set voltage.

The PT6719C is perfect for a range of uses. It is a compact design, making it ideal for applications that require a small footprint. Its built-in protections make it safe to use in potentially volatile environments. The wide range of input and output combinations make it suitable for both low and high current applications. The current mode control ensures high accuracy as well as efficiency. All these features make PT6719C an ideal choice for a variety of applications.

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