TPS54628DDAR

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TPS54628DDAR is a two-phase interleaved synchronous buck DC-DC converter, providing high current and efficient low voltage conversion. It utilizes its high-efficiency, high-power PMOSFETs and minimize the overall system circuit with its low cost, compact bill of materials. The TPS54628DDAR operates on a two-phase interleaved topology, reducing peak inductor current and output capacitor ripple decreased by up to 70%, resulting in reduced system size and cost. This feature also provides for cooler operation for the system.

In addition, this device also offers programmable switching frequency up to 1MHz, allowing designers flexibility in terms of a larger range of applications. It comes with an integrated high-side MOSFET and synchronous rectifier allowing the user to reduce physical space, BOM and overall system cost. The TPS54628DDAR also features an over-temperature and over-voltage protection for enhanced reliability and protection for the system.

The TPS54628DDAR is ideal for applications with high power requirements and where low-ripple and low-noise performance is desired. These include server power supplies, enterprise power supplies, set-top boxes, storage and storage devices such as hard drives and solid-state drives, and telecommunication systems.

The TPS54628DDAR works on the principle of switching regulation and an ideal electrical switch. It employs pulse width modulation (PWM) to generate a digital signal that can adjust the duty cycle and mean voltage applied to the load. The switching frequency is governed by the amount of load current and the required steady-state voltage for the output. During the switching cycles, the switch connected to the input is opened and closed at a rate determined by the oscillator. The mean voltage across the load is equal to the duty cycles adjusted from its reference voltage. Since the voltage is adjusted by switching, the output voltage tends to fluctuate under different loads and temperatures.

By utilizing the integrated power MOSFET in the TPS54628DDAR, the power loss and heat generated by the output can be reduced significantly. The integrated synchronous rectifier reduces power losses and enables a fast transient response. The device also employs a current-sharing control that allows simultaneous multipart operation, which is also used in server power supply design.

In addition to its power regulation capabilities, the TPS54628DDAR offers an adjustable soft start and permits external synchronization, enabling operation at higher switching frequencies and line input protection. It also provides two-phase interleaved capability, which reduces output capacitor ripple, resulting in a smaller design and lower bill of materials.

The TPS54628DDAR can be used in DC-DC converter applications such as hard drive power supplies, server power supplies and multi-phased switching regulation applications. This device also finds applications in desktop and server motherboards, high performance computing power supplies, and gaming consoles.

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