TPS2110PWRG4

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The TPS2110PWRG4 is a true one-channel, 9-A, everyday low-duty-cycle, synchronous buck-mode current-mode controller also integrated with 3.3V individual-supply, dual-N-channel MOSFET drivers. The TPS2110PWRG4 belongs to the class of PMIC - OR Controllers, Ideal Diodes, and is designed to reduce the power supply system size and cost by using a single inductor for multiple rails. With the help of its features, the TPS2110PWRG4 provides a complete solution for those applications that require low power-supply-rail designs.

The TPS2110PWRG4 application field includes:

1. Power Supplies: It is suitable for single-supply application that requires multiple low-voltage rails. Such as 5V, 3.3V, 1.8V and 1.2V outputs of core processor, DDR and flash memory.
2. Cellular Wireless Base Stations: It is used for providing reliable cross-point power supplies for processors, DSP, RF components and RF amplifiers.
3. Desktop and Notebook Applications: This device can be used for DC-DC solutions such as point-of-load converters, core processor and memory power supplies.
4. Other Miscellaneous Applications: These include automotive, industrial control, communication, medical systems and instrumentation.

The TPS2110PWRG4 features an array of protective features that protect it from overcurrent and overvoltage conditions. These features include:

• Tolerant to Low-Side Sense Resistor Failure: The TPS2110PWRG4 is designed to tolerate the failure of low-side sense resistor.
• Current Limit Protection: The device provides a configurable current limit, including an adjustable peak current limit.
• Voltage Limit Protection: The device offers a degree of protection against a possible voltage overshoot. This protection can be configured to either latch off or current limit.
• Overvoltage Protection: The device provides an internal overvoltage monitoring circuit.
• Temperature Protection: The device includes an internal temperature monitor that can be used as a fault detect. The device also features thermal shutdown for both the high-side and low-side MOSFETs.

The working principle of TPS2110PWRG4 is based on a synchronous buck-mode power topology. In the buck-mode topology, the control of the output voltage is achieved by adjusting the duty cycle of the MOSFETs. The TPS2110PWRG4 uses an adaptive-on-time control scheme to regulate the output voltage. The device utilizes both the output voltage sense resistor and the output voltage feedback voltage to adjust the switching frequency and to determine the on-time of the MOSFETs.

The device provides output voltage regulation without the need for an external control IC. The voltage regulation loop provides fast transient response times and uses an external low-side sense resistor to improve accuracy. The TPS2110PWRG4 also supports pulse-by-pulse current limit and has an adjustable soft-start circuit to limit inrush current. Overall, it offers flexibility for a wide range of applications with different load requirements.

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