TPS54972PWPRG4

The TPS54972PWPRG4 is a synchronous synchronous buck controller that supports a wide range of operating voltages and current ratings. This voltage regulator supports a wide input voltage range of 2.25V to 6.5V and is highly efficient in controlling power supply flows in areas such as portable battery operated applications. The TPS54972PWPRG4 controller integrates part of the power conversion stage and the current mode control, simplifying the design. It offers a built-in second resistor, thus reducing the cost and component count.

The TPS54972PWPRG4 is designed to provide a Constant On-Time control of the synchronous switching buck regulator with Output Voltage tracking to achieve a programmable output current limit. Its Constant On-Time operation reduces the number of external components required to perform power conversion. Additionally, the TPS54972PWPRG4 synchronizes the switching frequency with an external clock to reduce noise and spike interference.

The TPS54972PWPRG4 works by controlling the switching of the two high and low side switches of the synchronous buck converter (that is connected to its output pins) with the help of a programmable switching current limit. When the voltage across the high side switches causes them to reach the predetermined current limit, they are disabled, thus preventing current over-limit and preventing them from overheating. The current sense amplifier monitors the inductor current, and if the load current exceeds the programmed current limit, the switches are disabled.

The output voltage of the TPS54972PWPRG4 can be programmed using the programmable VID pins. It also has an integrated thermal protection that allows the buck switching frequencies to be reduced when the junction temperature reaches a certain threshold. In addition, it has multiple protection features such as overvoltage protection and undervoltage lockout.

The TPS54972PWPRG4 is ideal for use in a wide range of applications such as charger controllers, VRMs for CPUs, GPUs, DSPs, ASICs, FPGAs, and other processing units. It is also well-suited for portable devices and HDTVs, networking equipment, set-top boxes and more. It can also be used for voltage down conversion, voltage regulator, current limit, and other power-management designs.

In conclusion, the TPS54972PWPRG4 is a highly efficient and integrated synchronous synchronous buck controller that is mainly designed to provide a Constant On-Time control with Output Voltage tracking. It offers multiple protection features such as overvoltage protection and undervoltage lockout, as well as an integrated thermal protection circuit. It is suitable for a wide range of applications and is easy to use due to its reduced number of external components.