RS3-4812S/H3

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DC-DC Converters are power sources that can convert DC power from one voltage level to another, allowing it to be more efficiently used in different applications. The RS3-4812S/H3 is a DC-DC converter specifically developed for automotive applications, with specific features that make it ideal for the job.

The RS3-4812S/H3 is a 3-phase DC-DC converter capable of taking in a nominal input voltage range of 24–34 VDC, while supplying a variable, continuous output voltage ranging between 18–14 VDC. It supports a range of functional requirements, including input voltage flexibility with 15 switching points, soft-start with anti-kickback, and a 2-step power input limitation system. It also has a wide temperature range of -40C to +125C, as well as robust EMI filtering capabilities.

The RS3-4812S/H3 has a wide range of practical applications in the automotive industry. It can be used to provide isolation and voltage conversion for individual loads, as well as powering the entire vehicle. It can be used in hybrid electric vehicles (HEVs) for voltage conversion for the powertrain and energy storage systems, as well as for battery charging applications. It can also be used in electric vehicles (EVs) for charging, powering on-board or off-board accessories such as headlights and power windows, and powering the inverter.

The RS3-4812S/H3’s working principle is based on its internal switching regulator. Its input stage acts as a rectifier, converting the input AC voltage to a DC current, which then passes through an internal converter. The output stage is driven by an oscillator connected to the input voltage and consists of two MOSFET switches. These two switches create an alternating ‘on’ and ‘off’ cycle, forming a square wave which is then rectified and filtered. This produces a tightly regulated output voltage.

The RS3-4812S/H3 has two built-in protection features. It has overcurrent protection, which will open the FET when the output current rises above the safe limit. It also features overvoltage protection, which will limit the output voltage when it exceeds the preset level. These features ensure safe and reliable operation of the converter.

The RS3-4812S/H3 DC-DC converter is an excellent choice for automotive applications, offering wide input voltage flexibility, high temperature operation, and excellent protection features. It provides a cost-effective, reliable solution for a wide range of energy conversion applications, making it ideal for modern vehicle designs.

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