RT8239CGQW

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RT8239CGQW Application Field and Working Principle

RT8239CGQW is a special purpose voltage regulator, which is classified as part of Power Management IC (PMIC). It is mainly utilized for protection, DC/DC converter, and BIOS functions in applications related to notebook computers and LCD monitors. This regulator is among the load-sharing regulators that can achieve high output power.

Features

RT8239CGQW is a special purpose voltage regulator which provides some superior features, including:

• Nine Voltage Settings - It has nine voltage settings ranging from 1.8V to 10.0V., allowing it to be used in a wide range of applications.
• High Efficiency - It has an efficiency of up to 95%, meaning that it consumes lower power.
• Low Input Voltage - It has an input voltage range of 0.5V to 5.5V.
• Fan Speed Control - Its fan speed control helps in reducing fan noise and power consumption.
• Over-Current Protection - It is equipped with over-current protection which helps in preventing damage caused by excessive current.
• Over-Temperature Protection - It is also equipped with over-temperature protection which helps in preventing damage caused by excessive heat.

Applications

RT8239CGQW is primarily used for protection and DC/DC converter functions in applications related to notebook computers and LCD monitors. It can also be used in the following applications:

• PCIe 3.0 slots
• VGA cards
• Motherboard power supply
• Bios update
• Embedded systems
• Smart phones

Working Principle

RT8239CGQW is an active voltage regulator that can regulate an output voltage from 0.5V to 10.0V. It works on the principle of Pulse–Width Modulation (PWM). The control circuit of the PWM consists of two parts, the error amplifier and the oscillator. The error amplifier senses the output voltage and generates the error signal in response to it. This error signal is then used to control the duty cycle of the oscillator pulse. The duty cycle is controlled in such a way that the output voltage is kept constant. The output voltage is then regulated by the feedback loop between the Error Amplifier and the Oscillator.

Apart from the PWM technique, RT8239CGQW also utilizes advanced current-mode control techniques. The current-mode control is a very efficient technique, as it can achieve higher switching frequencies and efficient operation regardless of the load conditions. This advanced technique helps in optimizing the performance of the regulator and achieving better efficiency.

Conclusion

In conclusion, RT8239CGQW is a special purpose voltage regulator that has nine voltage settings ranging from 1.8V to 10.0V. It is mainly used for protection, DC/DC converter, and BIOS functions in applications related to notebook computers and LCD monitors. It utilizes PWM and current-mode control techniques for efficient and better regulating performance. RT8239CGQW can be used in a wide range of applications ranging from PCIe 3.0 slots, VGA cards, motherboard power supply, bios update, embedded systems and smart phones.

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