TPS5110PWG4

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TPS5110PWG4 is a voltage regulator belonging to the family of PMIC [Power Management integrated Circuit] – Voltage Regulators – Linear+Switching. This device is equipped with a wide input voltage range of 4.5V to 18V and an adjustable output voltage range from 1.2V to 5.5V. It also provides smooth transition between two modes of operation depending on the load requirements. It also helps to reduce the power consumption while achieving high current performance under heavy load condition.The TPS5110PWG4 is an integrated PWM (Pulse Width Modulation) switching regulator with a high efficiency linear post regulator. The synchronous buck converter is capable of providing 1A of continuous output current at voltage down to 1V. This part is optimized for extremely small, low-noise, low-EMI (electromagnetic interference) and fast start up applications.Working Principle of TPS5110PWG4:The TPS5110PWG4 takes advantage of buck and linear regulation to provide a regulated output voltage as low as 1V and a continuous output current of 1A. When the input voltage is greater than the desired output voltage, the part converts the input voltage into regulated output voltage by using buck switching converter. When the input voltage is near or lower than the required voltage, the part will switch over to the linear regulator. As a result, the output voltage is kept constant and the output current is limited in order to provide the desired regulation.The buck converter consists of an inductor, two switching transistors and the necessary control circuitry. The inductor stores the energy from the input voltage, which is then discharged very rapidly in the form of current pulses (through the switching transistors) to the output capacitor. The output voltage is monitored and compared to the reference voltage. The on-time (the time the switch is on) of the transistors is adjusted based on the difference between the reference and output voltage. This process is called PWM (pulse width modulation) and helps to regulate the output voltage.The linear regulator is used in parallel with the buck converter. It is used to reduce the power losses in the power path when the average output current is too low. It consists of an operational amplifier, a reference voltage, an error amplifier and a low dropout pass transistor. The operational amplifier and reference voltage determine the output voltage level and the error amplifier compares the output voltage with the reference. When the difference is detected, the operational amplifier compensates by controlling the gate of the low dropout transistor, allowing either higher or lower output current to flow. This keeps the voltage level at the correct output voltage level.Application Field of TPS5110PWG4:The TPS5110PWG4 is suitable for low power, low noise and fast start-up applications such as consumer and general electronics, medical and portable devices, mobile phones and tablet PCs, wearables, gaming and automotive. It can also be used in industrial, aerospace and defense applications.Because the TPS5110PWG4 can operate over a wide input voltage range of 4.5V to 18V and an adjustable output voltage range from 1.2V to 5.5V, it is ideal for a wide range of applications where low power consumption, high current performance and fast start up are important requirements.Conclusion:The TPS5110PWG4 is a PWM-controlled buck regulator with linear postregulator component, offering compact solution with very low power consumption. It is specifically designed to meet the needs of low power and small size devices, while providing the highest level of performance and reliability. The wide input voltage range and adjustable output voltage range allows it to be used in a wide range of applications, where fast start up and high current performance are important requirements.

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