IFX80471SKV50XUMA1

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IFX80471SKV50XUMA1 is a PWM switch-mode voltage regulator controller whose potential applications range from converters to DC-DC switching controllers. This integrated circuit, designed and manufactured by Infineon Technologies, is designed and optimized to increase power efficiency by actively controlling AC and/or DC loads. A comprehensive design and rating puts this IC in the category of Direct Current (DC) to Direct Current (DC) Switching Controller (PMIC – Voltage Regulators – DC DC Switching Regulators).

The device primarily supplies a constant output voltage with varying input voltage. It utilizes a low power switching converter to provide level-to-level voltage conversion. This allows for higher efficiency and a higher output power rating. Additionally, the device offers a wide range of features including current limiting, thermal protection, under-voltage lockout, and over-temperature control.

IFX80471SKV50XUMA1\'s output voltage can be adjusted from the input voltage range by a potentiometer. The external components used depend on the power level needed for the application. For example, for lower power applications such as lighting systems and general microcontroller based circuits, the device requires MOSFETs, capacitors, inductors and resistors. Higher power applications, such as automotive systems and office equipment, will require additional components as well. For applications requiring better regulation, the device can be combined with low voltage regulators to improve accuracy.

The device utilizes Pulse Width Modulation (PWM) for regulation. This modulation technique operates by varying the width of the electrical pulses, which correspond to the amplitude of the output. The pulses are produced at a fixed frequency, which is set by an external clock. Higher frequencies produce faster switching, and have higher efficiency, but also require more elaborate external components. Lower frequencies produce less switching, with lower efficiency, but require lower external components.

The device can be controlled via a variety of interfaces. An I2C interface enables digital operation, and the PWM outputs can be connected to a digital interrupt controller or other logic gates. The device also supports analog programming. A voltage-to-frequency converter can be connected to the adjust pin which can then be used to adjust the switching frequency based on an external voltage input. The adjustable switching frequency allows the output voltage to stay within a fixed range.

The higher power applications are able to use a bootstrap arrangement for the high side drive. This is used to reduce the stress on the MOSFETs, by providing a more balanced drive current. The lower power applications can use a simple PNP based latching drive arrangement.

The IFX80471SKV50XUMA1 is a switch-mode voltage regulator controller that is optimized for applications requiring efficient power control. It does this by utilizing a PWM switching technique to regulate the output at a preset level, based on a varying input voltage. This includes a wide range of features and interfaces to suit general, specialized and high-power applications alike. By integrating the necessary components, it helps to reduce the complexity of the design and cost, while providing improved efficiency and performance.

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