TQW14A-48S12RJ

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DC-DC converters are electronic devices that are used to convert Direct Current (DC) from one voltage to another. They are commonly used in applications where the input power voltage needs to be adjusted to be compatible with the load current. The TQW14A-48S12RJ is a DC-DC converter specifically designed to operate in harsh industrial environments. It is typically used in applications such as energy harvesting, railway power supplies, industrial automation, and data communications.

The TQW14A-48S12RJ is a high-efficiency, low-profile, wide input voltage range, and single-output DC-DC converter. It is designed to provide the highest efficiency while operating with an input voltage range from 6.5 V to 60 V DC without requiring any external components. The output voltage can be adjusted from 12 to 48 VDC through an internal on-board potentiometer. A comprehensive overload protection feature ensures the load is protected from short-circuit or over-current conditions. The converter is available in a 3”x 3” surface mount package.

At the core of any DC-DC converter is its switching regulator. The TQW14A-48S12RJ is based on a switch-mode Buck-Boost regulator, which provides high-efficiency and wide input voltage range operation solely using internal components. The Buck-Boost regulator, unlike other DC-DC switching regulators, can be operated in both boost and buck-mode, which enables it to regulate the output voltage with wide input voltage variations. Furthermore, it offers higher efficiency over its entire operating range compared to conventional DC-DC converters.

The TQW14A-48S12RJ device operates using Pulse Width Modulation (PWM) control. In the device, an internal pulse width modulator translates the desired output voltage into a digital data stream, which is then used to control an integrated power stage. The duty cycle of the PWM pulses is then adjusted to accurately regulate the output voltage while switching over the load current fluctuations. In this way, the device provides the highest efficiency while at the same time maintaining the accuracy of the output voltage.

For advanced applications, the TQW14A-48S12RJ provides additional features such as programmable soft-start, continuous short-circuit protection, and over-temperature protection. The soft-start feature controls how quickly the device ramps up in voltage when first enabled. This ensures the inrush current does not cause a sudden power upheaval, which can be especially helpful in applications such as railway power supplies. The other protection features are designed to protect the device from either overloading or overheating. The over-temperature protection, for example, offers full current limit operation as well as intermittent pulse-by-pulse current limiting when the device temperature is above an internal set threshold.

The TQW14A-48S12RJ is a versatile DC-DC converter that combines high efficiency with wide input voltage range and excellent protection features, making it ideal for applications such as energy harvesting, railway power supplies, industrial automation, and data communications. Its highly efficient Buck-Boost switching regulator ensures a high power output even in the harshest industrial environments. Furthermore, its comprehensive protection features ensure the device is immune to any overload or over-temperature conditions.

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