TPS54550PWP

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The TPS54550PWP is a 4-phase, integrated N-channel synchronous buck regulator with internal capacitors. It is a high-performance, cost-effective solution for controlling and regulating DC/DC converter outputs, providing regulated power supplies for mobile power critical applications. The device offers flexible power-management features, including adjustable per-phase current limiting, integrated low resistance MOSFETs, and an adjustable switching frequency. Additionally, it is capable of providing excellent efficiency due to its per-phase current-mode control.

The TPS54550PWP is a voltage regulator that offers a wide range of adjustable output current limit, up to 65A total and 13A per phase current. The low RDSON integrated MOSFETs provide low on-resistance, maximising conduction loss and optimising efficiency. With a wide switching-frequency range, the device can work in either Pulse-width Modulation (PWM) or Pulse-Frequency Modulation (PFM) operation, providing excellent operating efficiency over a wide range of load current. Furthermore, a highly integrated 4-phase buck regulator architecture employs high-side P-channel MOSFETs. This minimizes the external components required, costs, and board size. The adjustable soft-start feature ensures a smooth output voltage transition during start-up.

The TPS54550PWP is excellent for DC/DC power supply regulation, as it also has stable operation with excellent line and load regulation characteristics. It is versatile too; it can be used with a wide variety of input voltages, from 4.3V to 22V. Moreover, it has a low operating temperature of -40°C to 125°C, so it is suitable for applications in harsh conditions. In addition, it is offered in a small, low profile 16-pin, 4×4-mm discrete power package.

In terms of its applications, the TPS54550PWP supports a wide range of applications, such as laptops, tablets, and cell phones. It is suited as an on-board regulator or a point of load solution, enabling a PC Board system or a fully integrated mobile power solution. It is also suited to power digital Circuit and logic applications, as well as high-power consumer applications such as LCD televisions and DVRs. In short, the TPS54550PWP can be used for almost any mobile, consumer, or industrial application.

The working principle of the TPS54550PWP is to use the modulating characteristics of a voltage regulator to maintain the output voltage at a set level. It utilizes an output voltage error amplifier to compare the output voltage with the reference voltage, and the error amplifier output drives a MOSFET that then modulates the output voltage according to the feedback of the error amplifier. The output voltage is then fed back to the error amplifier, where it can be adjusted as needed to ensure that the correct voltage is maintained. The current limit is also adjustable, which ensures that the current flowing through the system is kept within safe limits.

The TPS54550PWP is a high-performance, cost-effective, integrated four-phase synchronous buck regulator, offering a wide range of adjustable output current limit, up to 65A total and 13A per phase current. The low RDSON integrated MOSFETs offer low on-resistance and maximises efficiency. It is an ideal solution for DC/DC power supply regulation, as it can handle a wide variety of input voltages, from 4.3V to 22V. The adjustable soft-start ensures a smooth output voltage transition during start-up, and it has a wide range of applications in mobile, consumer, and industrial applications.

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