RT8035GQW Integrated Circuits (ICs)

RT8035GQW Application Field and Working Principle

The RT8035GQW is a CMOS-based DC/DC switching regulator controller IC specifically designed to provide a very wide variety of high-current and low-noise applications. It works by regulating the output power from the main power source, such as a battery, to supply the more sensitive electronic circuits with a quiet and stable voltage.

The IC typically features adjustable input voltage between 2.8V to 28V and adjustable output voltage between 0.6V to 30V. It also features low quiescent current, excellent line and load transient performance, thermal shutdown and overcurrent protection, and adjustable frequency operation.

Application Fields

Due to its features, the RT8035GQW offers wide application scenarios and as mentioned above, it is designed with high-current performance and low-noise in mind. Therefore, it is suitable for a large range of high-current and low-noise applications such as DCC charger, notebook computer power, LED driver and industrial equipment.

In particular, the IC can be used as a notebook computer power supply as in the modern days, most computers are powered through dongles powered by batteries, AC adapters or USB – all of which require a power supply. The RT8035GQW is suitable for this purpose as it provides stable and low-noise power for the computer, potentially extending its battery life.

The IC can also be used as a DC/DC converter for LED driver applications. The RT8035GQW is equipped with adjustable frequency that couples with the PWM switching to offer high efficiency and low cost. In addition, it can also provide improved power factor in order to ensure the LED driver works reliably.

Working Principle

The RT8035GQW works on the Pulse Width Modulation (PWM) voltage mode topology. This topology consists of an error amplifier, a PWM comparator, and an external oscillator. The oscillator sets the switching frequency and the PWM comparator generates the control signals for the FET. The output voltage and current are regulated by the error amplifier, which compares the actual output voltage to the reference voltage. The error signals are then fed to the PWM comparator to generate the proper duty cycle for the FET, controlling the actual output voltage.

The IC also features a power source selection for the input supply. Upon the detection of the input signals, the IC will select the appropriate power source for the device. This power source selection is automatically done by the IC, providing greater convenience to the user and reducing the number of components required.

Conclusion

The RT8035GQW is a DC/DC switching regulator controller IC, specifically designed to provide a very wide variety of high-current and low-noise applications. It is suitable for applications such as DCC charger, notebook computer power, LED driver and industrial equipment. The IC works on the Pulse Width Modulation (PWM) voltage mode topology and it also features a power source selection for the input supply.