MC33368DG

Series:	GreenLine™
Packaging:	Tube
Part Status:	Obsolete
Mode:	Critical Conduction (CRM)
Frequency - Switching:	--
Current - Startup:	16mA
Voltage - Supply:	10 V ~ 16 V
Operating Temperature:	-25°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	16-SOIC (0.154", 3.90mm Width), 14 Leads
Supplier Device Package:	16-SOIC
Base Part Number:	MC33368

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Introduction to MC33368DG application field and working principle

Power Factor Correction (PFC) is a technique used in the power supply industry to increase the efficiency of power supplies while reducing the amount of heat generated. The MC33368DG is a PFC controller designed to reduce the power consumption of various power supplies such as AC-DC converters, switched-mode power supplies (SMPS), and other types of power supplies.

Description of MC33368DG and how it works

The MC33368DG is a highly integrated PFC controller and is capable of realizing a single-stage PFC conversion from DC input to AC output. Additionally, the MC33368DG is a state-of-the-art product with a wide variety of features and benefits for enhanced performance. The controller includes integrated gate drive, a low-noise oscillator, and over-voltage, under-voltage, and over-temperature protection.The internal blocks of the MC33368DG enable it to convert the input DC voltage into an AC voltage. The MC33368DG uses a fixed frequency and variable on-time control scheme to regulate the output voltage at the required level by modulating the pulse width. The on-time of each cycle is controlled by modulating the duty cycle (i.e. the portion of the cycle during which the voltage is switched on) of the internal low-noise oscillator. This, in turn, affects the power delivered to the power supply and the power factor. The maximum achievable power factor is up to 0.96.

Features and Benefits of MC33368DG

The MC33368DG features a number of features and benefits to enhance its performance. The controller\'s low-noise oscillator helps to reduce conducted and radiated noise, while the integrated gate drive enables efficient operation. Additionally, the controller offers excellent protection and temperature monitoring with over-temperature, voltage, and current protection. The MC33368DG is also compatible with a wide range of capacitors, inductors, and MOSFETs, making it easy to design a power stage.

Conclusion

The MC33368DG is a state-of-the-art PFC controller designed to reduce the power consumption of various power supplies such as AC-DC converters, switched-mode power supplies (SMPS), and other types of power supplies. Its features include a low-noise oscillator, integrated gate drive, and over-temperature, over-voltage, and under-voltage protections. This controller is highly efficient and capable of achieving excellent performance with a wide range of capacitors, inductors, and MOSFETs.

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