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DC DC Converters

DC to DC converters are used in applications where a DC voltage is required to operate at higher or lower than the source voltage. The most common applications are battery, circuit boards, and test equipment. The DC-DC converters are a simple and cost-effective way to convert a source voltage to a desired value in a fixed output voltage.

PT6625F

PT6625F is a DC-DC converter designed to convert a DC voltage from a relatively low level up to 30 V to a higher level of up to 24 V. The device provides a high efficiency, small size, and low noise operation. It is specifically designed for use in embedded applications, such as automotive, aviation, medical, and industrial systems.

Application Field

PT6625F DC-DC converters are used for various applications, such as automotive applications, LED lighting, motor control systems, power supply applications, automotive chargers, and portable electronics. With the help of the devices, an efficient power conversion is ensured, while consuming low power and generating minimal noise. Furthermore, the device also provides protection against over current, over voltage, over temperature, reverse polarity, and short circuit.

Working Principle

PT6625F DC-DC converters typically utilize a two-stage buck-boost conversion, which includes two operating stages. In the first stage, a buck converter is used to reduce the input DC voltage. In the second stage, a boost converter is used to increase the voltage. This type of conversion increases efficiency and provides voltage regulation for the output voltage. This type of converter is also valuable for powering sensitive electronics, as it eliminates power spikes or noise that can occur with other types of converters.

The PT6625F DC-DC converter\'s low noise operation and high efficiency is largely attributed to the use of synchronous rectification in the second stage. In synchronous rectification, the transistors switch the current and voltage based on the feedback signals received from the primary voltage sense. This allows the transistors to switch at their most efficient point in order to achieve the highest conversion efficiency.

In addition, the applied current mode control (CMC) with constant frequency increases the immunity to input voltage variations. This type of CMC indicates the on-time of transistors and ensures that the converter is always in operation regardless of its input voltage. Therefore, it is suitable for even the most challenging power supply applications.

Conclusion

The PT6625F DC-DC converter is a reliable and efficient device designed to convert a DC voltage from a relatively low to a higher level. This converter is used in a variety of applications including automotive, LED lighting, motor control systems, power supply applications, automotive chargers, and portable electronics. The device offers high efficiency, low noise operation, and protection from over current, over voltage, reverse polarity, and short circuit. The combination of synchronous rectification and CMC makes the device suitable for the most challenging power supply applications.

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