TPS54308DDCR Integrated Circuits (ICs)

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TPS54308DDCR Application Field and Working Principles

The Texas Instruments TPS54308DDCR is an ultra-efficient, 4-phase synchronous buck DC-DC regulator with support for input and output voltages in a wide range. This device provides a wide range of power for a variety of high-performance, low-power applications. It is designed to operate with a 1 V input and output voltage, and is capable of delivering power from 4.0V to 22V.

The TPS54308DDCR is part of Texas Instruments’ switching regulator family. It is a pulse-width modulation (PWM) type device that provides high switching frequencies and high light load efficiency. Furthermore, the device includes an adjustable frequency, internal soft-start and adjustable current limit. Using a unique “switching triple play” technique enables high power efficiency over the whole load range.

The TPS54308DDCR is suitable for a variety of applications including industrial and communication power, consumer and portable and mobile applications. Typical applications include set-top boxes, routers, gateways, cellular base stations, automotive and lighting applications.

TPS54308DDCR Working Principles

The TPS54308DDCR functions by synchronising the two MOSFETs in each phase, allowing a low on-resistance operation. Each phase has its own control circuitry and the control sign-off is phase-shifted from phase to phase. The switching action is driven by the dual-mode current-mode control, which is a combination of a peak current mode control and an average current mode control.

The average current mode control ensures a constant output voltage when the input power varies. The peak current mode control provides fast transient response. The TPS54308DDCR also allows flexibility by allowing adjustable output voltage, frequency and current limit. The output voltage is adjustable within 0% to 100% of the input voltage.

The frequency of operation of the TPS54308DDCR is programmable and ranges from 50 kHz to 1 MHz. Finally, the maximum current limit is programmable and adjustable according to the current consumed by the load. This ensures that the device does not experience current overload and protect the device from damage.

Conclusion

In conclusion, the Texas Instruments TPS54308DDCR is an ultra-efficient, 4-phase synchronous buck DC-DC regulator with support for input and output voltages in a wide range. It uses a dual-mode current-mode control technique for fast transient response, and is suitable for a variety of applications including industrial and communication power, consumer and portable and mobile applications.

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