RDC3072S3V3

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DC-DC converters are a class of electrical switching power supply devices and are used to convert one DC voltage to another DC voltage. One type of DC-DC converter is the RDC3072S3V3, which is a two-phase, full-bridge DC-DC converter consisting of an internal PFC boost converter, an internal LLC Resonant converter, and two-phase switching circuitry. This particular type of DC-DC converter is commonly used in telecommunications, industrial, automotive, and medical applications.

Application Field

RDC3072S3V3 is a high performance, high efficiency two-phase full-bridge DC converter designed for POL (Power On Line) applications. It features a wide operating voltage range from 5V to 38V and delivers up to 20A of output current. This converter offers excellent EMI performance, allowing for increased immunity to noise that can be caused by other devices in the system. It is suitable for use in a wide range of applications including: Telecom, CPUs, GPUs, Radar and Antennas, Machine tools, Motor drives, Automotive, Medical devices, etc.

Working Principle

The RDC3072S3V3 works on the principle of Pulse-width Modulation (PWM) control. It uses two-phase full-bridge PWM to control the output voltage and current. The internal PFC boost converter provides a constant input voltage to the LLC Resonant converter, which is then used to generate a high switching frequency (up to 1.2MHz). This high frequency enables the use of small inductors and capacitors, which helps to reduce the component count and size of the overall device.

The two-phase operation of the full-bridge allows for a more efficient operation. When compared to a single-phase full-bridge, the two-phase operation reduces the amount of power dissipated by the converter, as well as the output ripple and noise. The two-phase operation also allows for a smaller output capacitor, which helps to reduce the device’s footprint.

The RDC3072S3V3 is also equipped with a number of features to improve EMI performance. The converter features a differential-mode noise filter that reduces conducted EMI emissions and also has an adjustable slop-compensation feature that helps to minimize output voltage droop during high-load or transient conditions.

The output of the RDC3072S3V3 can also be adjusted using an external VC (Voltage Control) pin, which allows the user to adjust the output voltage for a wide range of applications. The converter also features over-temperature and overload protection, allowing the user to set a safe operating temperature range and current limit.

Overall, the RDC3072S3V3 is a high-performance and high-efficiency two-phase full-bridge DC converter ideal for a wide range of applications. Its two-phase operation allows for increased efficiency and reduced parts count, while its adjustable output voltage and EMI filtering features make it suitable for a wide range of applications.

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