AN-9717 データシートの表示（PDF） - Fairchild Semiconductor

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AN-9717

400W Interleaved Dual BCM PFC Controller

Fairchild Semiconductor 

www.fairchildsemi.com

2. Key Features

ƒ Low Total Harmonic Distortion, High Power Factor

ƒ 180° Out-of-Phase Synchronization

ƒ Automatic Phase Disable at Light Load

ƒ 1.8A Sink, 1.0A Source, High-Current Gate Drivers

ƒ Transconductance (gM) Error Amplifier for Reduced Overshoot

ƒ Voltage-Mode Control with (VIN)2 Feed-forward

ƒ Closed-Loop Soft-Start with Programmable Soft-Start Time for Reduced Overshoot

ƒ Minimum Restart Timer Frequency to Avoid Audible Noise

ƒ Maximum Switching Frequency Clamp

ƒ Brownout Protection with Soft Recovery

ƒ Non-Latching OVP on FB Pin and Second-Level Latching Protection on OVP Pin

ƒ Open-Feedback Protection

ƒ Over-Current and Power-Limit Protection for Each Phase

ƒ Low Startup Current: 80µA Typical

ƒ Works with DC, 50Hz to 400Hz AC Inputs

Figure 1. Block Diagram

© 2010 Fairchild Semiconductor Corporation

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FEB279_FAN9611/12 • Rev. 0.0.2

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