PXD2012S15

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The PXD2012S15 DC DC Converter is a two-stage non-isolated buck IC for mid-power applications. It consists of a buck boost regulator and a peak current control loop providing outstanding load transient performance. It is designed to provide up to 15A continuous current over a wide range of input and load conditions. The wide operating input range ensures compatibility with a wide range of power sources and makes the IC ideal for automotive, industrial, consumer and telecom applications.

The major features of the PXD2012S15 include an adjustable output voltage with up to 400mV of spread spectrum modulation for improved EMI, low quiescent current, adjustable switching frequency from 700kHz to 1.2MHz, phase shift control for improved transient response, and adjustable soft start time and peak current control.

The working principle of the PXD2012S15 is based on a two-stage architecture, with two separate regulated voltage loops at switching frequency. In the first stage, a buck regulator is used to generate the output voltage from the input supply. In the second stage, a peak current control loop is used to regulate the output current, providing precise load transient response while maintaining high efficiency.

The output voltage of the PXD2012S15 is adjustable, and is easily set over a wide range using external components. The output can also be spread spectrum modulated up to 400 mV, to reduce EMI while keeping noise margins within specifications. The adjustable oscillator frequency allows users to optimize the device for different power levels.

The PXD2012S15 also features a peak current optimum output transition control loop, which provides fast transient response while still maintaining high efficiency. The current-limit circuit can be set to limit the output current to the desired level, providing protection against overloads and short-circuits. The soft-start circuit adjustable with an external resistor, providing the current ramp-up time which can be set depending on the load requirements.

The PXD2012S15 is a high-performance, low cost DC-DC converter suitable for a wide variety of applications. It combines a synchronous buck regulator and peak current control loop to provide outstanding load transient performance, while still maintaining high efficiency. The adjustable output voltage, spread spectrum modulation, adjustable switching frequency, and peak current control make the PXD2012S15 a great choice for applications requiring a reliable and efficient DC-DC converter.

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