RT8015AGQW Integrated Circuits (ICs)

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The RT8015AGQW is a single-phase synchronous buck DC/DC switching regulator with a USB Type-C port. It integrates two main power MOSFETs, integrated precise current sense and soft-start in a small package with a simple application circuit, enabling quick design-in and small form factor. This device is a high Integrated and precise voltage regulator that offers great performance in the field.

Application Field

The primary application field for the RT8015AGQW DC/DC switching regulator is low power single-phase converters. It can be used in a wide range of power supply applications such as ultra-low EMI SMPS, laptop adapters, notebook adapter, USB charging and other portable applications. Moreover, it can be used in power supplies for computer equipments such as PC and PC peripheral systems, communication equipment and home appliances.

Working Principle

The RT8015AGQW follows the standard synchronous buck DC/DC converter topology,consisting of an inductor and two switched MOSFETs. The device performance is further enhanced with high-accuracy current detection,current limit, and cycle-by-cycle peak current protection. The voltage regulation is also enhanced with a precision adjustable output voltage and very low noise operation.

The RT8015AGQW produces an output current representing an adjustable proportion of the sensed input current. The integrating current sensormeasures the average current flowing through the power switch by using a resistor as a shunt. This prevents the formation of parasitic voltage drops which causes instability and lead to power losses due to power dissipation. The inductor peak current limit is protected by sensing the primary side current and the peak current is further protected by immediately turning off the switch when the current limit is exceeded.

The RT8015AGQW also offers a wide range of functions such as under-voltage lockout (UVLO), over-voltage protection (OVP), short-circuit protection and over-temperature protection. Other protective features include overload, frequency foldback, programmable start up delay, enable/disable and power margin. These functions can be enabled or disabled through I2C interface.

The RT8015AGQW further increases its performance with the precise voltage regulation loop which consists of a precision voltage reference,an error amplifier and a precise, wide range feedback signal. With precise voltage regulation, the device is able to control the output voltage precisely to precise values even at low load current.

Moreover, the RT8015AGQW also features a low-noise operation due to its wide bandwidth control loop and high-efficiency. With its low-noise operation, the device is able to effectively reduce the electrical noise generated in the system during high-frequency switching.

Conclusion

The RT8015AGQW integrates two main power MOSFETs, integrated precise current sense and soft-start in a small package with a simple application circuit, enabling quick design-in and small form factor. The RT8015AGQW is a high-performance DC/DC switching regulator designed for low power, single-phase converters. It offers a wide range of features such as precision voltage regulation,high-accuracy current detection, current limiting, peak current protection and low-noise operation. These features make the RT8015AGQW an ideal choice for applications such as ultra-low EMI SMPS, laptop adapters, notebook adapter, USB charging and portable applications.

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