RT8202GQW

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The RT8202GQW is a DC DC switching controller from Richtek Technology Corporation. It is a low cost, high efficiency DC DC step-down controller with integrated FET. The RT8202GQW is designed for high peak current and low operating current. It is suitable for notebook adapters, portable chargers and voltage converters.

The RT8202GQW integrated FET allows for high efficiency and low ripple operation. It has an ultra-fast response time and can maintain a constant output voltage with low output ripple voltage. The RT8202GQW also provides power sequencing, overload protection and overvoltage protection.

The RT8202GQW is designed for applications such as notebooks, network devices, servers, portable chargers, media players and other consumer electronics. Its features include low start-up current, high efficiency, low standby current and low ripple current.

The RT8202GQW\'s working principle is based on a Pulse Width Modulation (PWM) control. The main parts of the RT8202GQW include an input voltage sense (VIN), a pulse width modulation (PWM) comparator, a voltage reference (VREF), a error amplifier (EA), and an overvoltage & current sensing comparator (ComP).

It uses a current mode architecture to control its output voltage. This means that the output of the PWM comparator is used as the control signal for the pulse width modulation (PWM) switching power supply, which then controls the output of the RT8202GQW. The PWM switching power supply is comprised of a high side switch (N-channel), a low side switch (P-channel), and a gate driver.

The RT8202GQW operates by sensing the input voltage (VIN) and comparing it to the reference voltage (VREF). The output voltage controlled by this comparison, the PWM comparator generates a pulse stream, the width of which is proportional to the input voltage difference. The output is then regulated by the PWM controller, which modulates the duty cycle of the switching power components and sets the output voltage.

The RT8202GQW also features overload protection and overvoltage protection. The overload protection prevents the output voltage from being exceeded, by setting an upper limit on the duty cycle of the power converter. The overvoltage protection feature limits the output voltage by shutting down the power converter if the reference voltage is exceeded.

The RT8202GQW is an easy to use, low cost, and high efficiency DC DC step-down controller with integrated FET. Its features and capabilities make it suitable for a wide range of applications such as notebooks, media players, portable chargers and other consumer electronics.

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