SG6961DZ

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Power Factor Correction (PFC) is a technology used in electrical power systems to ensure that the load operates in optimal energy efficiency. This technology is used in almost all electrical power systems, often commercial, residential, industrial and military. SG6961DZ is a Power Factor Correction (PFC) controller designed for wide DC voltage input range, high current loads and high efficiency applications.

SG6961DZ can support wide DC input voltage range from 6V up to 400V. It supports all standard buck and boost topologies such as buck, flyback, boost, forward and quasi-resonant. It also provides comprehensive protection features such as over voltage, over current, under voltage, over temperature and short circuit protection, making it ideal for demanding applications with high power density, high efficiency and long life cycle.

The working principle of SG6961DZ is based on a self-regulated power conversion concept. It uses a constant power algorithm, a closed loop system using a voltage to current converter and an error amplifier. The constant power converter measures the input power drawn and converts this into an output voltage by modulating the switching duty cycle of the driver transistors. The error amplifier is then used to regulate the output voltage and maintain the required power factor.

SG6961DZ can be used for the following applications, depending on the specific design requirements:

• Simple switched mode power supply (SMPS) designs
• Game consoles
• LED drivers
• Power adapters
• Laptop chargers
• Solar inverter applications
• DC/DC converters

SG6961DZ offers high performance in combination with efficient operation and robust protections to enable a safe and reliable system design. It is ideal for applications requiring wide input range, high current load, high efficiency and long life application requirements.

In summary, SG6961DZ is a advanced PFC controller designed for wide input voltage range, high current loads and high efficiency applications. It works on a constant power algorithm to maintain the required power factor and provides comprehensive protection features such as over voltage, over current, under voltage and short circuit protection. It is used for a wide range of applications from simple switched mode power supply designs to LED drivers and solar inverters.

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