TPS40055PWPR

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TheTPS40055PWPR Integrated Circuit (IC) is a high-frequency DC/DC controller designed for use in non-isolated buck applications. As one of Texas Instrument’s (TI’s) Power System product family, the TPS40055PWPR is especially designed for high-current, high-performance, and low-noise applications. This DC/DC controller is suitable for various applications including computing, networking, storage, automotive, and industrial.

The TPS40055PWPR is a 6-phase interleaved synchronous buck DC/DC controller. It combines 6 synchronous buck channels while being able to maintain a high switching frequency with multiple internal synchronous rectifiers to increase power efficiency. This device also offers advanced features such as an adjustable soft-start, overvoltage and undervoltage protection, and unique spread spectrum frequency modulation to reduce the radio frequency interference. Additionally, the device includes smart power stages with integrated power-good indicator and features the industry-leading transient performance. It is available in a thermally enhanced 38-pin package (9-foot chip-scale package) and is specifically designed for cost-sensitive point-of-load applications.

In applications, the TPS40055PWPR operates as a high voltage buck controller that can be used to regulate multiple DC/DC converters whose operating voltage range from 0V to 28V. The output current capability of the TPS40055PWPR is up to 3A and the frequency range is from 200KHz to 1MHz. For operation, the device requires a supply voltage between 7V and 32V.

The working principle of the TPS40055PWPR involves the control of an on-chip MOSFET switch. An internal oscillator is used to generate an intermittent signal that is used to control the on-chip MOSFET switch. When the MOSFET is on, the input voltage is connected to the output and the inductor receives current to store energy. When the voltage level exceeds a switching threshold, the inductor current turns off the MOSFET switch and the stored energy is then delivered to the output. This process is repeated until the output converges to a regulated voltage that is regulated by an on-chip voltage reference.

In conclusion, the TPS40055PWPR is a high-frequency DC/DC controller that is suitable for various applications and able to regulate multiple DC/DC converters. It features an adjustable soft-start, advanced features such as overvoltage and undervoltage protection, and unique spread spectrum frequency modulation to reduce interference. Additionally, the device includes smart power stages with integrated power-good indicator, and also offers industry-leading transient performance. With its 6-phase interleaved synchronous buck DC/DC controller design and its efficient operation, the TPS40055PWPR is an ideal device for cost-sensitive point-of-load applications.

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