Onsemi FAN9673 | Demoboard FEBFAN9673_B01H2500A

Description

The FAN9673 is a 32-pin, Continuous Conduction Mode (CCM) Power Factor Correction (PFC) controller IC intended for PFC pre-regulators. The FAN9673 includes average current and boost-type power factor correction, which results in a power supply that fully complies with the IEC1000-3-2 specification. A TriFault Detect™ function helps reduce external components and provides full protection for feedback loops, such as over voltage. An over-voltage comparator shuts down the PFC stage in the event of a sudden load decrease. The RDY signal can be used for power-on sequence control. The Channel Management (CM) function can enable / disable the each channel independently. The FAN9673 also includes PFC soft-start, peak current limiting, and input voltage brown-in/out protection.

Features

• Continuous Conduction Mode Control
• Maximum Three-Channel PFC Control
• Average Current Mode Control
• PFC Slave Channels External Signal / Channel Management Function Control
• Programmable Operation Frequency Range: 18 kHz~40 kHz or 55 kHz~75 kHz
• Programmable PFC Output Voltage
• Two Types of Current Limit
• TriFault Detect™ Protects Against Feedback Loop Failure
• SAG Protection
• Programmable Soft Start
• Under-Voltage Lockout (UVLO)
• Differential Current Sensing
• Available in 32-Pin LQFP Package

Typical applications

• Home Appliance/Industrial Motor Motion Control

More information

• Datasheet