TPS65273VDAPR Integrated Circuits (ICs)

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TPS65273VDAPR Application Field and Working Principle

The TPS65273VDAPR is a DC-DC switching regulator designed for applications such as tablets, mobile phone, notebooks, etc. It provides up to 8A of output current with high priority protection under various operation modes, including low-voltage protection, current limit, thermal shutdown protection and overvoltage protection. The device is also highly efficient and fully integrates internal power MOSFETs, allowing it to handle wide input voltage range.

The TPS65273VDAPR can operate in two kinds of modes – Pulse Frequency Modulation (PFM) mode and Pulse Width Modulation (PWM) mode. In PFM mode, the device enters a mode in which the pulse width of the switching frequency is fixed, with the frequency varying between 0.3MHz and 1.2MHz according to the load. This enables the devices to provide high efficiency and low EMI at light loads. In PWM mode, the frequency of the pulse remains fixed and the pulse widths changes according to the load – this provides better efficiency at high load conditions.

The TPS65273VDAPR can handle input voltages from 4.5V to 20V and provides an output voltage range of 0.8V to 5.5V. The device has a switchover voltage pin that turns off the output when the input voltage goes below 3.45V and restarts the output when the input voltage rises above 3.5V. This feature is useful when powering off the system when the battery voltage is low and restarting the system when the battery voltage is sufficient.

The TPS65273VDAPR is also equipped with an integrated core voltage regulator and a power controller, both of which ensure stability of the output voltage and current. The integrated slave core voltage regulator prevents fluctuations in the output voltage when the output load is low and the power controller maintains a constant output current during start up and load transitions. This helps to ensure optimal performance from the device in every situation.

In addition to this, the device also supports a variety of levels of protection from overvoltage protection, current-limiting protection and thermal shutdown protection. The output voltage is monitored for accurate regulation and the over voltage protection prevents excessive voltage from damaging the device. The current limit protection prevents overload currents, ensuring the safe operation of the device and the thermal shutdown protection prevents the device from overheating due to high temperature. This ensures the safe and reliable operation of the TPS65273VDAPR in all conditions.

The TPS65273VDAPR is compact and easy to use, providing the required features for a variety of PC, laptop, notebook and tablet applications. Its high levels of protection, wide input voltage range and wide output voltage range make it a suitable choice for many different applications. Further, its efficient working and wide range of features make it an attractive option for a variety of applications that require dependable power management.

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