PT6881N

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DC DC converters are used to convert one DC voltage into another DC voltage, allowing a power system to distribute power to electronic components across different voltage levels. The PT6881N is one such DC DC converter that is often used in industrial, transportation and medical applications. This article will describe the main application field and working principle of the PT6881N.

Application Field

The PT6881N is a high-efficiency isolated DC DC converter for use in a wide range of applications. It has a wide operating input voltage range of 4.75-16V and a high power density of up to 1000W. The operating temperature range for this device is from -40 to +85°C. As a result, the PT6881N is suitable for use in automotive, industrial and medical applications, where the wide temperature range and high efficiency are beneficial.

In automotive applications, the PT6881N is often used as a DC-DC converter to provide isolated and regulated power for electronic systems such as vehicle infotainment or driver assistance systems. The compact size and high efficiency of the PT6881N makes it an ideal choice for these applications. Another common application for the PT6881N is in medical systems where it can be used to power medical equipment or as an isolated power supply for medical monitors.

Working Principle

The PT6881N is a synchronous buck DC DC converter that uses a power transistor to control the output voltage. The input voltage is rectified and then applied to the output through a power transistor. The power transistor switches on and off rapidly to regulate the output voltage level. This allows the output voltage to stay within a predetermined range and provides protection from over-voltage or under-voltage conditions.

In addition to using a power transistor to regulate the output voltage, the PT6881N also features an integrated current limit circuit that is designed to protect the device from over-current or continuous overload conditions. The current limit circuit is set to activate when a certain current level is exceeded, which helps to protect the output from excessive current levels.

The PT6881N also features a low noise operation mode that minimizes the amount of switching noise and electromagnetic interference that is generated by the device. This helps ensure that the device operates without causing interference to other equipment or systems. The low noise operation mode also helps to reduce the power consumption of the device.

Conclusion

The PT6881N is a wide range, highly efficient isolated DC DC converter that is suitable for use in automotive, industrial and medical applications. It features an integrated power transistor with current limit protection and low noise operation mode to ensure safe and reliable operation. The wide operating temperature range and high power density make it an ideal choice for a variety of applications.

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