PXCM0624WS15A

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DC DC Converters

DC DC Converters use electronic components to convert a DC voltage from one value to another. The most common type is the step-down type, which is used to convert a higher DC voltage to a lower one.

PXCM0624WS15A Application Field and Working Principle

The PXCM0624WS15A is a highly efficient DC/DC converter module used in automotive electrical and electronic applications. It has a wide input voltage range from 4.5V to 32V, and provides up to 15A of output current. The module features a built-in SMD diode protection circuit and over-temperature protection.

The PXCM0624WS15A is based on a synchronous buck-type regulator design. Its components include a switching MOSFET, an adjustable 0.8V precision reference voltage source, an error amplifier, an oscillator, an internal soft-start function, and other circuit protection components.The switching MOSFET operates in a pulse-width-modulated (PWM) configuration, with a frequency that is adjustable from 200KHz to 1.2MHz.

The MOSFET switch is controlled by the oscillator and error amplifier. The voltage reference source provides a regulated 0.8V output, which is compared to the sense voltage from the output to determine the desired duty cycle of the MOSFET. The oscillator generates a triangular waveform, and the error amplifier compares it to the reference voltage to determine the duty cycle. The duty cycle determines the ratio of on-time to off-time, thus controlling the output voltage.

The internal soft-start function gradually increases the output voltage, minimizing the inrush current during start-up. The fault protection circuitry monitors the input, output, and temperature conditions, detecting over-current, over-voltage, and over-temperature conditions, and shutting down the regulator for safety. The PXCM0624WS15A is highly efficient, providing up to 95% conversion efficiency, and is available in a variety of packages, making it suitable for a wide variety of automotive applications.

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