PTB78520WAH

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DC DC Converters are an important type of electronic components used to control the voltage and current within electronic circuits. There are numerous types of DC DC Converters, each suitable for a certain application. One type is the PTB78520WAH DC DC Converter, which is often used in audio and professional audio applications. It is a highly efficient switching regulator, designed to convert an input voltage in a certain range to the required output voltage.

The PTB78520WAH is a step-up switching regulator, meaning it is capable of converting an input voltage from a lower value to a higher value. The converter can support input voltages from 4.5V to 14V and can output voltages up to 20V with an efficiency rate of 85%. Additionally, the PTB78520WAH has a wide operating temperature range from -25°C to 75°C (- 13°F to 167°F). This makes it suitable for a variety of applications in harsh environments.

The PTB78520WAH features several advanced features that make it a desirable option for audio applications. It has a low noise on-board output voltage reference that provides stability in audio circuits, a low ripple and noise performance for optimal sound quality and a wide input voltage range allowing for the use of a single power supply over a wide voltage range. Additionally, it has a wide hysteresis window and can provide a wide range of output current up to 0.5A.

The working principle of the PTB78520WAH is simple yet ingenious. The circuit contains two blocks: an input power block that converts the input voltage to the required output voltage and an output stage block that provides the required current level. The input power block is composed of a MOSFET switch and a transformer and the output stage is composed of a low dropout (LDO) linear regulator.

The input power block is responsible for the power conversion and operates by charging up the internal energy storage capacitor banks. When the transformer receives a voltage signal from the MOSFET switch, it steps up the voltage and the energy within the capacitor banks is discharged to the output. The output stage then takes the output voltage from the transformer and regulates it with the low dropout linear regulator so that it reaches the required output level.

The converter requires an external MOSFET switch and an inductor to work. The MOSFET switch is step-up circuit controller. It is responsible for the timing of the power stages. It turns on and off the oscillator at the required frequency and for the required duration. The inductor acts as an energy storage element during the power conversion process. Its job is to release and absorb energy as the voltage is stepped up or down.

The PTB78520WAH is an excellent choice for audio and professional audio applications. Its wide input voltage range, low ripple noise performance, low noise reference and wide output current range makes it ideal for powering all sorts of audio circuits. Its highly efficient design makes it a great choice for applications that require high performance and stability.

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