TPS77818PWPRG4

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Introduction to TPS77818PWPRG4

TPS77818PWPRG4 by Texas Instruments is a synchronous step-down power converter, that provides a low-cost, high performance power solution for portable and mobile applications. It is a high-efficiency, synchronous-rectified, single-phase voltage regulator which can accurately deliver current from an input voltage range of 3 to 12 V up to a programmed output voltage as low as 0.6 V, from a full rated output current of up to 8 A. Its dual-mode operation, in normal and forced PWM, helps conserve power in light load applications. Additionally, the TPS77818PWPRG4 features an advanced digital core control with versatile features such as an automatic burst mode and skip mode to minimize power losses, bringing the total cost down by providing an improved total solution cost.

Application Field of TPS77818PWPRG4

The TPS77818PWPRG4 is designed to meet the power requirements of fast-charging, data cards, and wireless gadget applications while dissipating very little power. It eases system design with a wide input voltage (3 to 12 V), adjustable protection features, maximum output current up to 8 A, and an accurate switching frequency of up to 2 MHz, offering designers extreme flexibility. The TPS77818PWPRG4 solution also offers various features, such as an adjustable UVLO, OVP, and OCP, that protect the device without external components for a smaller overall system footprint. In summary, the TPS77818PWPRG4 is an ideal solution for portable and mobile applications like notebook PCs, other electronic systems, and peripheral devices.

Work Principle of TPS77818PWPRG4

The TPS77818PWPRG4 synchronous step-down power converter works by receiving power from an input voltage, usually in the range of 3 to 12 V, and then converting it to a lower output voltage as low as 0.6 V. The intense power conversion process is done in an efficient and accurate manner by an internal MOSFET switch driven by a high-speed controller operating at a fixed switching frequency of up to 2 MHz. Under normal PWM mode, the output voltage is applied to its inner feedback loop and compared to the reference voltage. This process helps the switching frequency of the converter to adjust itself automatically to efficiently accommodate the load and input conditions.

The TPS77818PWPRG4 also offers a low-power, forced PWM mode option, in which the The MOSFET is forgoing a predefined on or off state. During standby mode, the Auto Burst mode feature helps the switch to reduce its switching current to a minimum level for minimal power dissipation. For extreme light-load conditions, the TPS77818PWPRG4 allows the skip mode to switch the MOSFET off completely, thereby reducing considerable power consumption.

The TPS77818PWPRG4 also has short-circuit protection and adjustable over-voltage protection, under-voltage lockout and over-temperature shutdown features that help enhance the product\'s efficiency and offers excellent safeguard to the system.

Conclusion

The TPS77818PWPRG4 synchronous step-down power converter from Texas Instruments is designed to meet the power requirements of fast-charging, data cards, wireless gadget and other portable and mobile applications. It has a wide input voltage range, an automatic burst mode and skip mode for a low power operation, adjustable over-voltage, under-voltage and over-temperature protection for a better system safety and an accurate switching frequency of up to 2 MHz for an improved efficiency. These formidable features make the TPS77818PWPRG4 the best solution for portable and mobile applications.

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