TPS630250YFFR Integrated Circuits (ICs)

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TPS630250YFFR is a regulated direct current to direct current (DC-DC) switching converter from Texas Instruments. The device has a wide input range from 4.2 to 14V, making it an ideal device for battery powered applications including single-cell 3.2V-5V, multi-cell 4.2V-14V, and USB power supplies. TPS630250YFFR runs at a switching frequency of 1.5MHz, enabling a compact solution size. The device supports a wide output voltage range from 0.6 to 5.5V output voltage regulation in 1.5V precision, at output currents up to 500mA.

Applications of TPS630250YFFR include, but are not limited to, portable computing, connected and communications devices, medical devices, and many other handheld devices that require a small amount of battery power. It can also be used as an adjustable voltage regulator, as the output voltage can be adjusted in 22.5mV increments from 0.6V to 5.5V. Furthermore, the device also integrates key features, such as an internal LDO, thermal overload protection, overvoltage protection, and output short-circuit protection, making it suitable for many thermal and voltage sensitive portable embedded systems.

Working Principle

The TPS630250YFFR employs a switch-mode, buck-boost design to regulate input voltage to the required output voltage. The primary control architecture of the device is a peak current mode synchronous buck-boost control integrated circuit (IC). The peak current mode IC is used to control the average current of the inductor by sensing the voltage across the inductor. In order to maintain the output voltage at its desired setpoint, a feedback loop is formed with the loop compensation circuitry. The TPS630250YFFR also features a built-in integrated low dropout (LDO) which allows for additional voltage and current tracking for an extra measure of stability and performance.

The device includes both current- and voltage-mode pulsed control. The voltage-mode control maintains constant peak current and allows the frequency of the switching to be varied when the output load varies. The current-mode control, on the other hand, helps to maintain the output voltage while the duty ratio of the switch changes to keep the load current constant. Depending on the application, the user can select either current- or voltage-mode control while programming the duty cycle of the switch circuitry with external components.

In addition, the TPS630250YFFR also includes an internal voltage reference for ensuring a precise output voltage, an integrated differential amplifier for monitoring the current in the switch enabling protection functions, and additional circuitry for overvoltage protection, output short-circuit protection, soft-start, and thermal overload protection.

Conclusion

The TPS630250YFFR DC-DC switching regulator from Texas Instruments is a highly integrated and configurable regulator that allows for efficient conversion of power from a range of input voltages to a wide range of output voltages. The regulator features sophisticated control architecture, such as programmable peak current- or voltage-mode control, and built-in safety features to ensure the performance and reliability of the device. Furthermore, it supports a wide range of output currents, making it suitable for many portable and embedded applications.

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