OB6683 Description
OB6683 integrates a transition mode power factor correction (TM PFC) controller and a QuasiResonant (QR) controller in one chip. The PFC controller provides a cost effective solution for optimizing the power factor. The QR controller provides higher efficiency and lower EMI pared to conventional PWM system.
OB6683 Key Features
- Integrated PFC Controller and QR Controller
- Transition Mode PFC Controller
- Multi-Mode Operation for QR Stage
- Line Voltage pensation for QR Stage
- Enhanced Dynamic Response for PFC Stage
- PFC Light Load Turn Off Control
- Audio Noise Free Operation
- External Latch Triggering for Both Converters
- Minimum OFF time for Ringing Suppression
- Maximum ON Time Limit for QR Stage