PT4147C

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DC-DC converters are key components used in a variety of electronic equipment, from cars and industrial machinery to mobile phones and home appliances. The features of the converters differ from application to application, making it necessary to tailor them to the environment of the device being used. The PT4147C DC-DC converter is an excellent example of this. It is primarily used in mobile phones and small consumer electronics due to its small footprint, high efficiency, and ease of use.

The PT4147C is a non-isolated Voltage Source Converter (VSC), meaning it supplies a constant voltage output to the load regardless of the input voltage. It is comprised of an input rectifier, output inverter, and a control stage that drives these components. The rectifier consists of a Schottky diode, allowing it to efficiently regulate the input voltage. An integrated switch-mode converter then takes the rectified input voltage and generates a higher or lower voltage, depending on the desired output. The output inverter then converts this regulated output voltage back to a continuous power source.

The control stage of the PT4147C is where the converter adapts to different applications. It consists of six main parts: the error amplifier, voltage reference, oscillator, current control, error integrator, and output stage. The error amplifier monitors the output voltage and regulates it as needed. The voltage reference keeps the output voltage within a defined range, and the oscillator creates a variable frequency to control the pulse width modulation (PWM) of the output voltage. The current control section then ensures that the output voltage remains constant even under varying loads. Finally, the error integrator prevents any sudden jumps in output voltage, smoothing out the transitions.

The PT4147C is capable of supplying up to 1.2A of current with a maximum input voltage of 26V. It is available with a 5V to 15V output voltage, depending on the application. Additionally, it can operate with a wide range of switching frequencies up to 1.2MHz, allowing for a variety of different operational modes. These features, combined with the converter’s high efficiency and low cost, make it an ideal solution for many mobile and consumer electronics applications.

In summary, the PT4147C is a DC-DC converter designed primarily for mobile and consumer electronics applications. It works by rectifying the input voltage, regulating it with an integrated switch-mode converter, and then inverting it to generate the desired output voltage. The control stage helps keep the output within a defined range while also smoothing out transitions. The PT4147C is capable of supplying up to 1.2A of current with a maximum input voltage of 26V, making it an ideal solution for many mobile and consumer electronics applications.

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