PM6685TR

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PM6685TR is a special purpose PMIC voltage regulator that is widely used in applications with both high current and fast response requirements. It comprises internal safety features and advanced topology solutions, which allow customers flexible design options with low design costs. In this article, the application field and working principle of PM6685TR will be demonstrated.

Application Field

The main application field of PM6685TR is automotive and industrial. In automotive applications, this regulator provides high power and performance with high temperature robustness and quiescent current as low as 1µA. It is designed to provide consistent and reliable power to monitor and power audio, infotainment and telematics systems. Due to its high efficiency, fast response time and low quiescent current, the PM6685TR is perfect for battery-powered solutions, such as electric vehicles (EVs), hybrid electric vehicles (HEVs) and plug-in hybrid electric vehicles (PHEVs).

In industrial applications, PM6685TR is suitable for use in automated industrial equipment, such as motion control systems, programmable logic controllers (PLCs), and factory automation controllers. It provides high current, efficient solutions for these systems, as well as fast and precise dynamic response, which is essential for uninterrupted operation. Its advanced features such as programmable current limit, thermal protection and line compensation ensure operational stability, even when power sources are unstable.

Working Principle

PM6685TR is a durable and power-efficient switching regulator that operates with a constant frequency current mode control technique. The switching regulator is made up of an input voltage source, a power transistor switch, and an output load. The regulator maintains the output voltage constant irrespective of the fluctuations in the input voltage by modulating the width of the pulse generated by the switch.

As the input voltage changes, the voltage regulator adjusts the on-time of the switching transistor in order to maintain the output voltage constant. A feedback loop between the output and the error amplifier is used for the regulation, and is controlled by the error amplifier and the voltage reference. The error amplifier compares the output voltage level with the reference voltage, and drives the adjustment of the output voltage accordingly till the output voltage reaches the reference voltage.

The PM6685TR also includes several internal protection circuits such as overvoltage prevention (OVP), current-limited protection (CLP) and thermal shutdown protection (TSD) to protect against any circuit malfunction or overcurrent condition.

In summary, PM6685TR is a high-performance, efficient and highly robust voltage regulator with advanced safety features and low design cost that provide reliable power to automotive and industrial applications. Its advanced control techniques, low power consumption, and compact size make it a must-have for many industries.

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