TPS54613PWP

TPS54613PWP is a DC to DC voltage regulator. It is an integrated power switch with an external driver Fig. 1. The device can be used for a wide range of applications with a wide input voltage range, from 4.5V to 22V, and high-frequency voltage conversion performance. With its high-side power switch, dual low-side power switches, low-side current source, and various features and can operate from a variety of control schemes.

The primary application of TPS54613PWP is that it can replace an external MOSFET for synchronous rectification in low-voltage (=12V, <20V) DC-DC power converters. It provides high-side and dual low-side bridge drive with dual, high current low-side switches, adaptive deadtime control and a low-side, constant current source. The device provides 5A of peak and 3A of continuous switch current, which makes it suitable for a wide range of bipolar systems, such as RMUs, telecom, server and data storage.

The working principle of the TPS54613PWP can be divided into two parts. The first part is the voltage control circuit. This circuit senses the output voltage of the converter, and then outputs a control signal to the pulse-width modulator. The second part is the pulse-width modulator. A modulator takes the control signal from the voltage control circuit, and then determines the width of the pulse for each cycle, thus controlling the output of the converter. The modulator compares the control signal with a reference triangle wave, and the difference between the two determines the duty cycle for the pulse.

The key features of the TPS54613PWP make it suitable for various applications in the fields of industrial, communication and computer applications. It provides fast transient response and accurate line and load regulation such as voltage ramping (voltage ramp rate of 250 mV/μs). In addition, it guarantees a perfect current balance between two channels, enabling the device to be used in dual-channel sync rectification. It is applicable to voltage-mode and current-mode control systems. The device is also highly integrated as it integrates on-chip inductor-sense current sensing to detect the current in the inductor, as well as load transistors and current-sense circuit.

In conclusion, the TPS54613PWP is an integrated power switch with an external driver suitable for a wide range of applications. It provides high-side and dual low-side bridge drive with dual, high current low-side switches, adaptive deadtime control and a low-side, constant current source. Its key features make it suitable for various applications in industrial, communication and computer applications.