TPS54980PWPR

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DC-DC switching regulators can deliver power at regulated voltage over a wide range of current demands without the need for huge transformers and circuits. The Texas Instruments TPS54980PWPR is an example of a switch mode DC-DC power supply, which combines the latest semiconductor technologies and supporting components to deliver high quality power efficiently, in a tiny package. This application note will discuss the primary field in which the TPS54980PWPR can be used, and its working principle.

Application Field of Use

The TPS54980PWPR is specifically designed for use in applications that require a wide range of input voltages and output currents. This includes applications such as automotive infotainment systems, navigation systems, electronic control units, and LED lighting systems. This power supply can deliver power to up to 6 different output voltages simultaneously, with each one able to have its own independent current monitoring.

This switch mode power supply also offers low power consumption during standby mode, which is ideal for energy-saving applications. Due to its high accuracy and large range of input and output voltages, this power supply is also suitable for industrial applications.

Working Principle

The TPS54980PWPR is an integrated, non-isolated buck-boost converter, containing a high-efficiency, high-voltage synchronous rectifier and two pulse-width-modulated (PWM) switches inside a single integrated circuit. This design is optimally designed to provide outstanding efficiency with ultra-low noise at all times.

The TPS54980PWPR functions by using two cascaded PWM switches with integrated high-side and low-side drive circuits. The pulse width of each switch is controlled by the microcontroller, depending on the input voltage and output current requirements of the system. When the voltage of the input voltage is greater than the output voltage, it is buck mode, and the low-side switch is on and the high-side switch is off. Conversely, when the input voltage is lower than the output voltage, it is boost mode and the high-side switch is on and the low-side switch is off.

The TPS54980PWPR also features an integrated synchronous rectifier that eliminates the need for an external Schottky diode. This rectifier further improves power efficiency and eliminates power loss due to thermal heating caused by the external diode.

Furthermore, this power supply offers a wide range of output voltage (0.8V to 5.5V) and an operating temperature range of –40 to +125°C. The wide range of input and output voltages allows for versatility and makes this power supply suitable for a wide range of applications.

Conclusion

The TPS54980PWPR is a switch mode DC-DC power supply which is designed for use in applications that require a wide range of input and output voltages. This power supply is optimally designed to provide excellent efficiency, low noise and high reliability. It can operate within a temperature range of –40 to +125°C and offers a wide range of output voltage. This makes it suitable for applications such as automotive infotainment systems, navigation systems, electronic control units, and LED lighting systems.

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