TPS54428DRCR Integrated Circuits (ICs)

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The Texas Instruments TPS54428DRCR is a synchronous 4-phase buck switching regulator Integrated Circuit (IC) that offers a wide variety of features and options to suit the needs of many types of applications. It is a member of the fifth generation of TI\'s synchronous buck regulators and is part of the industry\'s most complete series of synchronous buck regulators, providing coverage for output currents from 1 A up to 25 A. This IC is ideal for a variety of applications including embedded computing and networking, data storage, telecommunications, distributed power systems, and various other industrial applications. It is also well-suited for automotive applications.

Application Fields

The TPS54428DRCR is well-suited for regulating intermediate bus voltages in intermediate bus voltage regulation and point-of-load implementations. It is designed to be used as a primary power regulator step-down converter in applications such as distributed power architectures. It can also be used as a secondary power regulator or active load switch in point-of-load architectures. The TPS54428DRCR can deliver up to 25A current with a high level of efficiency and excellent transient response. It is designed to provide accurate output voltage with respect to reference voltage and temperature.

Working Principle

The TPS54428DRCR utilizes a constant frequency and current mode control technique for both step-down and step-up conversion. The IC has two independent buck regulators, each providing up to 25A of output current. The two regulators can be operated in parallel or synchronous buck topologies. In the synchronous buck topology, the two regulators are connected together in a master-slave configuration, enabling low I²R loss at the input and output. The IC includes multiple protection features such as over-voltage, over-current, and over-temperature. It also has programmable soft start, short circuit protection, and supply sequencing.

The TPS54428DRCR operates in fixed frequency mode, at a frequency range of 400kHz–850kHz. The switching waveforms of the IC can be optimized by controlling the duty cycle of the internal high-side and low-side MOSFETs. The switching frequency and the duty cycle of the internal FETs can be programmed through an external resistor. The IC has an internal variable ramp compensation to optimize the response of the power conversion loop. This variable ramp allows the IC to have excellent line and load transient performance.

In addition, a graphical user interface (GUI) can be used to configure the control parameters such as the step-down inductor value, current limit, and voltage setting for the output voltage. The user can also choose from several different operating modes including burst mode and PWM mode. The PWM mode ensures that the output voltage remains the same under varying load conditions. The burst mode helps to reduce the power consumption at light load conditions.

Conclusion

The TPS54428DRCR is a versatile IC that is well-suited for a wide range of applications. It is designed with a wide variety of features and options to suit the needs of many types of applications. It operates in fixed frequency mode, offering excellent line and load transient performance. It also has programmable soft start and short circuit protection features. Additionally, various protection features make it suitable for use in distributed power systems, embedded computing and networking, data storage, telecommunications, and various other industrial applications.

The specific data is subject to PDF, and the above content is for reference