RT7736BGE

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PMIC (Power Management Integrated Circuit) can be divided into three categories, namely AC DC converters, offline switchers, and battery chargers. Among them, AC to DC converters can provide DC power from AC power sources. Offline switchers are used to convert AC into DC components by regulation of the frequency and voltage. Battery chargers convert DC power to charge batteries. RT7736BGE is an AC/DC converters IC, it is also a PWM type step-down(or Buck) switching regulator.

RT7736BGE is a PWM type step-down switching regulator that takes an input voltage of 6V to 36V and can provide an output voltage adjustable from 0.6V to 31.5V and a maximum output current of 3A. It features a minimum operating frequency of 2.5MHz. It is a synchronous step-down switching regulator, which means the switching current is regulated and the ripple current is minimized. The RT7736BGE has an advanced peak current mode control architecture with internal compensation, an integrated synchronous rectifier for increased efficiency, and an over-temperature protection with hysteresis.

The RT7736BGE can be configured in several ways to meet the needs of various applications. It can operate in either continuous current mode (CCM) or discontinuous current mode (DCM) for low current applications; it can be used as a non-synchronous buck converter or as a synchronous buck converter. It can also be used as a multi-phase converter to reduce input ripple current and improve efficiency. Additionally, the device includes a Power-Good signal pin, which can be used to enable/disable the output voltage.

The working principle of RT7736BGE is the same as other DC-DC converters. It uses a series of switches (MOSFETs) to control the energy transfer between the input and output of the circuit. When the switch is closed, current flows into the inductor and energy is stored. When the switch is opened, current is forced out of the inductor into the output capacitor and the load, thus providing a regulated DC output voltage. During each switching cycle, the regulating circuit will adjust the on-time of the switch according to the output voltage feedback from a sense resistor placed at the output of the circuit. When the output voltage reaches its programmed value, the regulating circuit will reduce the amount of energy transferred to the output ensuring a stable output voltage.

In conclusion, RT7736BGE is a PMIC product specifically designed for AC/DC conversion. It can be used for regulating and controlling the DC output voltage from an AC power source in a wide range of applications. With its high switching frequency, low output ripple and wide input voltage range, it offers excellent performance in terms of efficiency and accuracy. Its integrated synchronous rectifier further increases efficiency and its high integration eliminates the need for external components.

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