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Benefit of ICL8800/ICL8810/ICL8820 multi-mode flyback operations

Benefit of ICL8800/ICL8810/ICL8820 multi-mode flyback operations

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Community Translation: ICL8800/ICL8810/ICL8820マルチモードフライバック動作の利点

The controller operates in voltage mode to optimize the power factor. It also autonomously selects the best mode of operation based on operation conditions like input voltage and input frequency as well as load conditions. Quasi-resonant mode (QRM) controls the on-time and maximizes the efficiency by switching on at the valleys of the ZCD signal. This ensures zero-current switching with a minimum of switching losses. Burst mode for ICL8810 and ICL8820 increases the efficiency in light load operation and extends the power range for wide range input voltage designs. At the same time it enables very low standby power.

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