TPS5124DBTRG4

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Introduction

TPS5124DBTRG4 is a DC/DC switching controller designed to provide power supply design solutions in space-constrained applications. This voltage regulator has been optimized to controller step-down power supplies requiring high current output from small, low profile packages (less than 10mm profile) with minimal external components.

Features

TPS5124DBTRG4’s features include an input voltage range of 4 - 39V, an operational frequency range from 200 kHz to 1.2 MHz, and a 0.9V to 5.5V undervoltage locking range. Additional features include external fine-tuning of the output voltage, external shutdown, power good indicator, and a current mode control with slope compensation. This voltage regulator also has a dual built-in power MOSFET gate drivers and a precise output voltage regulation to 1%.

Application Field

The TPS5124DBTRG4 is particularly suitable for space-constrained applications such as LED lighting, NAS/RAID boxes, unmanned aerial vehicles, robotic systems and automotive applications. It can also be used in applications that require high current outputs, such as microwave ovens, motor control equipment, laptop adapters, and notebook/ultra-mobile PC adapters.

Working Principle

The TPS5124DBTRG4 voltage regulator works on the principle of PWM (Pulse Width Modulation) control. This regulator uses an internal oscillator to generate a variable peak current. The peak current is then compared with the current sense signal from the external sense resistor to generate a pulse-width modulated waveform that maintains a constant, regulated output voltage. Internal circuitry protects the regulator against overvoltage and undervoltage conditions.

Conclusion

The TPS5124DBTRG4 is a DC/DC switching controller that has been optimized for space-constrained applications such as LED lighting, NAS/RAID boxes, robotic systems, unmanned aerial vehicles and automotive. With its 0.9V to 5.5V undervoltage locking range and a current mode control with slope compensation, this voltage regulator is able to maintain a precise output voltage regulation to 1%.

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