XC9247B65CMR-G Integrated Circuits (ICs)

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Power management integrated circuit (PMIC) voltage ­regulators, especially DC/DC switch­ing regulators, are designed to regulate voltages. XC9247B65CMR-G is a DC/DC ­conversion regulators of PMIC voltage regulators. The XC9247B65CMR-G is composed of integrated circuits, such as an oscillator and a power transistor, and passive components, such as capacitors and resistors. The device has two operating modes — step-up mode and step-down mode. This article aims to describe the application fields of XC9247B65CMR-G and its corresponding working principle.

Application fields of the XC9247B65CMR-G

Given the versatile nature of DC/DC switch­ing regulators, XC9247B65CMR-G can be applied in many scenarios. The device is suitable for mobile phone applications, such as main battery chargers, back-up battery charger, flash controllers, touch-screen controllers, and wireless chargers. It can be used in other consumer applications, such as DSLR cameras, digital video cameras, and digital still cameras. Furthermore, XC9247B65CMR-G also offers other applications, such as tablets, ultrabooks, HP Mini PCs, point-of-sale devices, DVD players, GPS trackers, portable chargers, and motor drives.

Working principle of the XC9247B65CMR-G

XC9247B65CMR-G has two operating modes — step-up mode and step-down mode. In step-up mode, the input voltage is stepped up to the higher output voltage. In this mode, an inductor is used to store electrical energy. Current is passed through the inductor increasing it’s magnetic field strength. When the current flowing through the inductor decreases, the stored energy dissipates into the output capacitor, providing power to the load.

In step-down mode, the input voltage is stepped down to the lower output voltage. This operation relies on the principle of pulse-width modulation (PWM). The width of the input voltage pulse is modulated by a transistor. The higher the voltage of the input power supply, the longer the pulse is. This action reduces the output voltage to the desired level. The PWM frequency is controlled by the integrated oscillator. When the output voltage is lower than the prescribed level, a reference voltage is generated to control the PWM cycle.

XC9247B65CMR-G can efficiently convert input voltage to an exact output voltage within a wide range. It also provides other features, such as starts-up current, shutdown current and current limit, which can guarantee the stability of the power supply system.

Conclusion

XC9247B65CMR-G is a DC/DC conversion regulators of the PMIC voltage regulators family which can be used in diverse applications. It features two operating modes — step-up and step-down. Step-up mode relies on the inductor to store energy while the step-down mode utilizes pulse-width modulation (PWM) to control the output voltage. With the features of tight voltage regulation, starts-up and shut-down current, current limit and PWM control, XC9247B65CMR-G is an ideal solution for various application needs.

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