AEQ20B48N-L

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The AEQ20B48N-L is a topology of a DC-DC converter, which converts a DC input voltage to a regulated output voltage with high power density and efficiency. It is primarily intended for use in applications that require a high level of accuracy and reliability. These applications include industrial control systems, medical equipment, automotive systems, machine tools, communication, as well as a variety of consumer electronic products.

Overview

The AEQ20B48N-L is a two-stage DC-DC buck converter with an output power rating of up to 20 Watts. It is a non-isolated synchronous rectified design with a regulated output voltage range from 1.2V to 48V. The design is based on a combination of a buck chopper topology and a secondary switching regulator stage, with an average efficiency higher than 90%. This makes it suitable for applications that require a high power density with a high level of efficiency.

Working Principle

The AEQ20B48N-L implements a two-stage DC-DC converter topology, with a buck chopper plus a secondary switching regulator stage. In the buck chopper stage, a switching transistor is used to control the voltage at the drain of an inductor. The fixed-frequency switching transistor is rapidly switched on and off in order to transfer the DC input voltage through the inductor with a variable duty cycle. This variable duty cycle controls the output voltage of the regulator.

In the secondary stage, a synchronous rectifier rectifies the AC voltage waveform provided by the buck chopper, as well as providing a regulated output voltage. The synchronous rectifier is also controlled with a variable duty cycle, which is determined by the output of the primary stage. The secondary stage operates at a higher frequency than the primary stage and is used to reduce the output ripple and increase the power output. The output voltage is adjusted by means of an external voltage divider.

The AEQ20B48N-L also features selectable frequency and burst modes, which enable the customer to tailor the device performance according to the system requirements. In addition, the device has integrated EMI filtering. This ensures the outputs remain clean and free from interference.

Conclusion

The AEQ20B48N-L is an efficient two-stage DC-DC buck converter with a wide output voltage range and high power density. It features selectable frequency and burst modes, which allow the user to tailor the device’s performance to their needs. In addition, integrated EMI filtering ensures the device\'s outputs remain clean and free from interference. The AEQ20B48N-L is an ideal candidate for high-accuracy and reliable applications, such as industrial control systems, medical equipment, automotive systems, machine tools, communication, and consumer electronics products.

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