TPS54561QDPRRQ1 Integrated Circuits (ICs)

TPS54561QDPRRQ1 is a four-phase DC/DC synchronous buck converter with integrated MOSFET drivers, adjustable current limit and output voltage. It is built on an advanced advanced CMOS process and provides optimal efficiency, high switching frequency and high power density.

Application Field of TPS54561QDPRRQ1

This device is designed for high current applications such as Point of Load (POL) power solution, Advanced Driver Assist System (ADAS) power solutions, communications systems and server/datacenter applications. It is also suitable for other applications that require high efficiency and power density.

Working Principle of TPS54561QDPRRQ1

The TPS54561QDPRRQ1 is a synchronous buck regulator, which means that it regulates an output voltage level by controlling the current flow under load. It works by switching the MOSFETs that supply power to the output inductor on and off. This switching action controls the current in the output inductor, which in turn controls the output voltage.

This device has two integrated drivers within its package, with one driver dedicated to each phase. When one of the MOSFETs turns on, the incoming AC power is converted to DC power, and the voltage is stepped down by the inductor. Then, when the other MOSFET is turned on, the current from the inductor is discharged and the output voltage is regulated.

The synchronization of the drivers is achieved using the internal sync pin. This ensures that the MOSFETs switch on and off in a controlled and synchronized manner, allowing for a higher efficiency, better transient response and cleaner ripple.

The TPS54561QDPRRQ1 uses an adjustable current limit that allows the user to select the current level at which the output voltage will be maintained, thus providing a higher level of efficiency and safety. It is also protected against over-voltage conditions, with a hysteretic over-voltage input protection built into the device.

In summary, the TPS54561QDPRRQ1 is a four-phase DC/DC synchronous buck converter with integrated MOSFET drivers, adjustable current limit and output voltage. It is ideal for high current applications that require high efficiency and power density.