PT6728A

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DC DC converters are electronic devices used in many systems to convert a constant voltage from one circuit to a different voltage level that is necessary for another circuit. They are often used in large scale industrial applications where protection against lightning strikes is essential. PT6728A is one example of such converters and it has its own unique application field and working principle.

Description of PT6728A

PT6728A is a power transfer AC/DC conversion device which can be used as a DC-DC converter, LED lighting power supply or a rechargeable battery charger. It has a wide input voltage range of 90-264VAC and the output voltage range is customizable. The device has multiple protections such as overload, over voltage, over temperature protection due to its built-in algorithms. It is perfect for use in extreme temperatures with -40°C to +85°C of its operating temperature range.

Application Fields of PT6728A

PT6728A can be a great fit for many industrial applications as it offers high efficiency, low cost with multi safety protections. Its industrial grade design is perfect for use in harsh conditions, for example, in lightning-stricken area. It is also suitable for portable applications as it has a wide range of input voltage and the relatively small size. Its applications include, but not limited to, industrial control systems, communication systems, broadcast and television systems, computer industry and power bank.

Working Principle of PT6728A

PT6728A is a flyback topology power transfer device which utilizes a high frequency transformer to transfer power from one side to another. The input side of the converter for this device is an AC signal while the output side is a DC signal. After rectifying the AC signal on the primary side of transformer, the rectified signal is passed through an active switch. The current waveform on the secondary side of transformer will be regulated by the duty cycle of the switch. This process creates a pulsating DC, which can be regulated by a suitable feedback control circuit. When an overload happens, the switch will be shut off automatically, then the cycle begins again, making the output of PT6728A a regulated DC.

Conclusion

PT6728A is a DC-DC power transfer device with a wide application field. Its wide input voltage range, high efficiency, multi safety protections and support of extreme temperatures makes it a perfect fit for many industrial control systems, communication systems, broadcast and television systems, computer industry and power bank. The working principle of PT6728A is based on the flyback topology with the primary side rectifying the AC signal and the secondary side regulating its current waveform by an active switch.

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