EVB_RT7280GQW

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EVB_RT7280GQW is an evaluation board for the RT7280GQW offline SMPS controller from Richtek. This controller is suitable for a wide range of high performance DC-DC, AC-DC, and other switching power supply applications. It features a wide operating voltage range, fast transient response, high efficiency, fast switching frequency, and programmable output current limit. The EVB_RT7280GQW comes with all necessary components already installed, so all one needs is their input and output sources, an optional programming port, and a power supply.

The RT7280GQW is suitable for use in many power supply applications, including: AC-DC SMPS, DC-DC converters, offline LED drivers, and more. It is also capable of providing a variable output voltage from 3.0V to 24V. The EVB_RT7280GQW features Richtek’s patented BiCMOS technology, which provides ultra-low power consumption and high efficiency. It also includes over-voltage, over-current, and over-temperature protection.

The working principle for the RT7280GQW is a two-stage control loop. First, a primary loop controls the current sense for the output switch. This loop also ensures that the output voltage stays within its expected range. In the secondary loop, the voltage is regulated by the variable output voltage circuit. This loop controls the pulse width modulation (PWM) voltage, which is the output voltage of the power supply.

To use the EVB_RT7280GQW board, one must first connect the main power to the board, and then configure the output voltage and current. One can also use an optional programming interface to control the parameters of the board, such as the output voltage, current, switching frequency, and more. After all settings are completed, the board is ready to use.

The EVB_RT7280GQW evaluation board is suitable for engineers and hobbyists who are looking for a reliable solution for their power supply applications. It is easy to use and provides a wide range of features to ensure that the output voltage and current requirements are met. The board is a great choice for those who need to test the RT7280GQW offline SMPS controller for their applications. Additionally, the board is very affordable and available from a variety of sources.

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