TPS542951PWP

TPS542951PWP Application Field and Working Principle

TPS542951PWP belongs to the type of DC DC switching regulators from the PMIC (Power Management Integrated Circuits) families, specifically the Voltage Regulators range. It has a wide acceptable input voltage range from 4.5V to 22V and is intended for use in Sony PlayStation Portable (PSP) applications. Italso supports the current-limited foldback current-limit for more precise system control.

This DC-DC voltage converter encompasses a synchronous buck PWM (pulse width modulated) controller that works with two power MOSFETs; one as a high-side power switch and the other functioning as the low-side switch. It offers a fixed on-time operating mode at 25Khz. As for the control logic and built-in protection of the device, it facilitates thermal shutdown and cycle-by-cycle overcurrent protection, with an adjustable over current threshold. This is just to add additional system protection with no need for extra external components.

The output voltage range of TPS542951PWP is adjustable over its operational voltage range and is a fraction of the input voltage. The minimum output voltage can be set to 3.2 V while the maximum output can go as high as 17V. It also boasts of a regulated logic pin voltage with a maximum of 3V output that helps in powering the PSP control circuitry, thereby reducing overall power loss.

The device is provided with a number of features such as voltage monitoring, input supply UVLO (Under Voltage Lock Out), soft-start and inrush current limiting. It also offers a programmable soft-start sequence to ease the stress on power components and to reduce inrush current.

In addition to these, TPS542951PWP has an adjustable frequency feature that can be used to select the switching frequency from any of the frequencies available - 25KHz, 50KHz, 100KHz and 150KHz. The switching frequency can be adjusted as per the requirement of the application. This provides for system flexibility and also helps in meeting the compliance requirements of the application.

Overall, the TPS542951PWP is an integrated device that provides an easy to use and reliable power solution for Sony PlayStation Portable (PSP) and other mobile device applications. It offers low power losses, reduced board space, adjustable output current and voltage, and programmable switching frequencies. It is a great choice for designers looking to develop and deploy a reliable, energy-saving power supply solution that can meet their mission-critical requirements.