L6566BH

L6566BH Multimode controller for SMPS Features ■ Selectable multimode operation: fixed frequency or quasi-resonant ■ On-board 840 V high voltage startup ■ Advanced light load management ■ Low quiescent current (< 3 mA) ■ Adaptive UVLO ■ Line feedforward for constant power capability vs. mains voltage ■ Pulse-by-pulse OCP, shutdown on overload (latched or auto-restart) ■ Transformer saturation detection ■ Programmable frequency modulation for EMI reduction ■ Latched or auto-restart OVP ■ Brownout protection Figure 1. Block diagram Datasheet — production data SO16N ■ -600/+800 mA totem pole gate driver with active pull-down during UVLO ■ SO16N package Applications ■ Industrial SMPS ■ SMPS running off rectified 3-phase input line VREF SS COMP VFF - 1 HV IHV VCC 5 10 14 SOFT-START & FAULT MNGT TIME OUT VOLTAGE REGULATOR & ADAPTIVE UVLO Ref erence voltages Internal supply UVLO VCC 9 15 LOW CLAMP OFF2 & DISABLE VCC OVP LINE VOLTAGE FEEDFORWARD 6.4V Icharge 7.7V + OVPL Q LEB 1.5 V 7 -+ -+ +- Vth PWM OCP VCC 6 FMOD UVLO_SHF + 400 uA 5.7V + BURST-MODE Hiccup-mode OCP logic OCP2 14V 4 OSC 13 OSCILLATOR MODE/SC 12 ZCD 50 mV 100 mV 11 MODE SELECTION & TURN-ON LOGIC ZERO CURRENT - DETECTOR + OVERVOLTAGE PROTECTION OVP R Q S TIME OUT OVPL LATCH OFF2 IC_LATCH DRIVER + 4.5V 8 AC_OK 16 3V 15 µA 0.450V 0.485V + AC_FAIL UVLO DISABLE 3 CS GD DIS April 2012 This is information on a product in full production. Doc ID 16610 Rev 2 1/51 ...