PT78NR206ST

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DC-DC converters are electrical circuits that convert a DC voltage from one level to another level. PT78NR206ST is one type of DC-DC converter which used to convert 12V input voltage to to 24V output. It is a non-isolated type with high reliability, compact size and low cost.

PT78NR206ST has a wide range of application fields, such as, automotive electronics, industrial control and instrumentation, distributed power systems, military telecommunications, and power electronics.

Working Principle

PT78NR206ST works by varying the input voltage of 12V to different level of output voltage, 24V. The device consists of two stages. The first stage is the switching stage. It is divided into two parts, the high side switch, and the low side switch. The high side switch acts as a signal generator, which receives the input voltage of 12V from the DC power source and transform it into two Sinusoidal pulses of 50% duty cycle. The low side switch connects to the switching stage\'s output to receive the two Sinusoidal pulses, and rectify them into two positive and two negative pulses, and then to the output of the device.

The second stage is the output stage. The output stage transforms the output voltage of 24V from the input voltage of 12V. In this stage, inductors are used to store the power for the circuit. The output voltage is then smoothed using capacitors. Capacitors are used to filter out ripples and reduce EMI. The diodes used in the output stage acts as current paths for the circuit.

The overall working principle of the PT78NR206ST is based on buck-boost mode. In this mode of operation, the input voltage is regulated to a higher voltage at the output. This is accomplished by using two switching stages, the high side switching and the low side switching. The high side switch acts as a signal generator, converting the input voltage of 12V to two Sinusoidal pulses. The low side switch is connected to the output of the high side switch and rectifies the Sinusoidal pulses into suitable low voltage levels. The output stage then takes the input voltage from the low side switch and boosts it to 24V.

Advantages

The PT78NR206ST has a range of advantages which makes it suitable for various applications. These include:

• High Efficiency : The device has high efficiency with low losses and total harmonic distortion.
• Compact size : It has a compact size making it easy to install in various applications.
• Wide Input voltage range : The input voltage range of the device is wide.
• Fast transient response : The device has fast transient response time.
• High switching frequency : The device has high switching frequency up to 200KHz.

Applications

PT78NR206ST has a wide range of applications such as automotive electronics, industrial control and instrumentation, distributed power systems, military telecommunications, and power electronics. Moreover, it is suitable in battery-powered systems such as cars, trucks, vans, boats, computers, consumer electronics and power tools.

PT78NR206ST is also suitable in DC-DC power supplies for communication equipment, photovoltaic systems, medical equipment, and distributed power systems.

Conclusion

The PT78NR206ST is a non-isolated DC-DC converter that is used to convert 12V input voltage to 24V output. It has a wide range of application fields such as automotive electronics, industrial control and instrumentation, distributed power systems, military telecommunications, and power electronics. The device has an impressive efficiency, a fast transient response time, and a high switching frequency. It is suitable for a range of applications such as battery powered systems, DC-DC power supplies for communication equipment, photovoltaic systems, medical equipment, and distributed power systems.

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