TPS55386PWPRG4

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TPS55386PWPRG4 Application Field and Working Principle

PMIC (power management integrated circuits) provide precise voltage and power management for a wide range of industries, from automotive engines to mobile device batteries. Among PMICs available on the market today, TPS55386PWPRG4 is a DC-to-DC switching regulator that stands out for its low current requirements, high-frequency switching, and excellent thermal behavior. Let us take a deeper look into the application field and working principle of the TPS55386PWPRG4.

Application field of TPS55386PWPRG4

The TPS55386PWPRG4 is specifically designed as a low-power power management solution, ideal for applications such as LED lighting, mobile phones, and notebook computer batteries. The device offers an ultra-low quiescent current of 0.470μA and provides adjustable output, selectable current limit, and safety fault protection features. The device has a wide input voltage range from 3V to 20V and provides an adjustable output voltage from 1.8V to 4V with a programmable switching frequency of up to 1MHz. The device has a wide operating temperature range from -40°C to +80°C.

For mobile device applications, desirable features such as low quiescent current, wide input voltage range, and 2-bit programmable current limit enable the TPS55386PWPRG4 to power up a range of batteries with minimum influence to their user experience. The device also has an integrated current sense circuit that helps reduce the power loss and helps to monitor the load current with a load current monitor (LCM) capability.

Working Principle of TPS55386PWPRG4

The TPS55386PWPRG4 is a DC-to-DC switching regulator with a buck-boost topology. The device has an onboard power MOSFET switch connected between the input voltage and the output voltage in order to regulate the output voltage. The device takes a fraction of the input voltage, sets a reference voltage based on this fraction, and then controls the power switch accordingly to regulate the output voltage.

The device’s programmable features like toggle frequency and duty cycle can be used to optimize the power conversion efficiency. The toggle frequency is the frequency at which the power switch turns on and off and the duty cycle is the ratio of the on time to the total time of the toggle frequency. The output voltage can also be adjusted by setting the reference voltage based on the input voltage and the duty cycle of the power switch. The power MOSFET switch is also enabled by a linear driver circuit that helps to prevent the power switch from being over driven and minimizes the thermal stress on the device.

The TPS55386PWPRG4 also has integrated safety features such as over current protection (OCP), under current protection (UCP), over voltage protection (OVP) and reverse voltage protection (RVP). The OVP and UCP features protect the device from voltage and current surges, while the RVP feature prevents current from flowing in an unintended direction. The TPS55386PWPRG4 is also equipped with a load current monitor (LCM) that can be used to monitor the load current to improve system performance. All of these features make the TPS55386PWPRG4 an ideal choice for a wide range of applications.

Conclusion

The TPS55386PWPRG4 is a low-power DC-to-DC switching regulator specifically designed for mobile and portable device applications. The device offers an ultra-low quiescent current of 0.470μA and provides adjustable output, selectable current limit, and safety fault protection features. It is an ideal solution for applications requiring high-efficiency, high-frequency switching, and excellent thermal behavior. With its integrated safety features and energy-saving features, the TPS55386PWPRG4 is a reliable and efficient power management solution.

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