The CM6800XIP is a power factor correction (PFC) and pulse-width modulation (PWM) combo controller from Champion Microelectronic Corp. It's designed for AC-DC power supplies that require power factor correction to meet regulatory standards and improve efficiency.

Applications:

• Power supplies for desktop PCs
• Power supplies for servers
• LCD TV power supplies
• LED lighting power supplies
• Adapters and chargers

Features:

• Interleaved PFC and PWM control
• Integrated PFC and PWM controllers
• Low start-up current
• Cycle-by-cycle current limiting
• Over-voltage protection
• Over-current protection
• Open-loop protection
• Brown-out protection
• PFC soft-start
• PWM soft-start
• Leading edge blanking on current sense input
• Internal clamp circuit on gate driver output

Benefits:

• Improved power factor, reducing harmonic distortion and increasing efficiency.
• Simplified design and reduced component count due to integrated PFC and PWM controllers.
• Enhanced reliability and protection with comprehensive protection features.
• Stable operation under varying input voltage conditions with brown-out protection.
• Reduced stress on components during start-up with soft-start features.
• Precise control and protection with cycle-by-cycle current limiting.

Additional Details:

The CM6800XIP typically operates in critical conduction mode (CRM) for PFC control, providing high efficiency and low total harmonic distortion (THD). The PWM controller can be configured for various topologies, such as forward, flyback, or boost converters, depending on the specific application requirements. The device includes internal protection features to safeguard against over-voltage, over-current, and open-loop conditions. The operating frequency is typically in the range of 65kHz to 200kHz, depending on the external component values and design parameters. It is available in a DIP package.