STMicroelectronics L6566B
The L6566B is an extremely versatile current-mode primary controller ICs, specifically designed for high-performance offline flyback converters. It is also suited for single-stage single-switch input-current-shaping converters (single-stage PFC) for applications supposed to comply with EN61000-3-2 or JEITA-MITI regulations. Both fixed-frequency (FF) and quasi-resonant (QR) operation are supported.| Part No. | L6566B |
|---|---|
| Datasheet | L6566B Download |
| Manufacturer |  STMicroelectronics |
| Description | Multi-mode controller |
| Buy | Stock & Price |
FEATURES
● Selectable multi-mode operation: fixed frequency or quasi-resonant● On-board 700 V high-voltage start-up
● Advanced light load management
● Low quiescent current (< 3 mA)
● Adaptive UVLO SO16N
● Line feedforward for constant power capability vs mains voltage
● Pulse-by-pulse OCP, shutdown on overload (latched or autorestart)
● Transformer saturation detection
● Programmable frequency modulation for EMI reduction
● Latched or autorestart OVP
APPLICATIONS
● Hi-end AC-DC adapter/charger● LCD TV/monitor, PDP
● digital consumer, IT equipment
● single-stage PFC
● Brownout protection
● -600/+800 mA totem pole gate driver with active pull-down during UVLO
● SO16N package Figure 1. Block diagram VREF SS COMP VFF - 1 HV Icharge VCC 5 10 14 SOFT-START & FAULT MNGT TIME OUT VOLTAGE REGULATOR & ADAPTIVE UVLO Reference voltages Internal supply UVLO VCC 9 LOW CLAMP & DISABLE OFF2 15 VCC OVP 6.4V 1 mA + OVPL LINE VOLTAGE FEEDFORWARD 7.7V Q CS LEB 1.5 V 7 -+ -+ +- Vth PWM OCP VCC 6 FMOD UV...
