TPS60120PWP

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TPS60120PWP is a fully integrated high efficiency DC-DC buck boost regulator with high peak current and low quiescent current. The main application fields for this IC are industrial, computing, host and mobile applications such as battery-operated systems, tablets, smartphones and base stations. The TPS60120PWP regulating chip integrates several important functions onboard, such as charge pump, step-down converter, step-up converter and compensate, making it ideal for low power battery-operated systems as it offers protection from overcurrent, overvoltage and battery over-discharge.

The TPS60120PWP maximizing the output power by transitioning between buck and boost modes, while adapting the power level in order to match the load requirement. Depending on the input voltage, the TPS60120PWP offers two mode selection, the Buck-Boost and the Buck modes. The Buck-Boost mode offers higher input voltage efficiency as compared to the Buck mode as it enables voltage conversion between VIN and VOUT while also having the capability to power the load from higher voltages. Moreover, its 64% peak efficiency and low quiescent current makes it suitable for continuous mode operation. The TPS60120PWP also implements an internal system that generates over-current and over-voltage protection for the system.

The working principle of the TPS60120PWP is ultimately based on the DC-DC buck-boost converter. It uses a combination of a capacitor and an inductor, to store and convert energy from one voltage level to another. The inductor also allows for smooth transitions between buck (step-down) and boost (step-up) modes based on the following principles:

• Buck Mode: In the Buck mode, the output voltage is lower than the input voltage. The inductor carries most of the energy conversion, so when switching to the Buck mode, the inductor rapidly ramps up the current and stores energy as an increasing magnetic field strength. As the load current is increased, the inductor’s current decreases.
• Boost Mode: In the Boost mode, the output voltage is higher than the input voltage. To achieve this, the inductor absorbs and stores energy from the input voltage, and then quickly ramps up current as the load decreases. As the load draws current, the inductor’s current drops as it releases the stored energy.

Overall, the TPS60120PWP is a high efficiency and cost-effective DC-DC buck-boost converter IC. The TPS60120PWP meets the need of most current mobile applications thanks to its size advantage, suitable operating range and low quiescent current. It offers a low noise and fast load transience, and can also be used as a battery charger. The TPS60120PWP integrates all the functions of a DC-DC buck-boost converter, making it the ideal choice for a wide range of portable, battery-operated electronics.

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