NCP1602DCCSNT1G Integrated Circuits (ICs)

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PMIC - PFC (Power Factor Correction) is an important part of any electrical system. It is used to increase power factor and reduce power losses in the system by adjusting the current and voltage to ensure that they are in phase with each other. The NCP1602DCCSNT1G is a common application field and working principle of power factor correction integrated circuits.

NCP1602DCCSNT1G is a two-channel synchronous common-drain MOSFET driver that allows two MOSFETs to be combined in a high-voltage, low-side synchronous rectification application. It allows an easy way to implementing efficient, low-cost power factor correction designs. The device contains an on-chip mover feedback circuit that provides a very low current sense resistor, a logic auto-sequence circuit for the high voltage side, an active clamp circuit and an active pull-down circuit for the low voltage side, a soft start circuit, and over temperature protection circuitry.

The mover feedback is used to sense the current on the converter output and provide a control signal to adjust the duty cycle for power factor correction. The logic auto-sequence circuit enables the synchronous rectifier to be activated and the voltage across the high-side MOSFET to be properly regulated. The active clamp circuit ensures that the low-side MOSFET remains off when the high-side MOSFET is in its off-state. Finally, the pull-down circuit ensures that the current continues to be regulated even when the output voltage of the converter is zero.

The NCP1602DCCSNT1G can be used in a wide variety of power factor correction applications, including flyback and boost topologies. It is typically used for applications with a load current up to 4A, a motor drive up to 8A and a hard switching frequency up to 8kHz.

The device operates from a single voltage supply and can be used in both single and multiple output converters. It has a maximum power dissipation of 8W and can operate over a temperature range of - 55°C to +150°C. The device is available in a PDIP-8 package and can be used with a variety of logic supply voltages.

In summary, the NCP1602DCCSNT1G is a versatile and low-cost power factor correction integrated circuit that is suitable for a wide range of applications. It is designed for hard switching frequencies up to 8kHz and can be used with a variety of logic supply voltages. Its on-chip mover feedback system provides precise power factor control and ensures accurate current regulation.

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