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SO16N Datasheet(PDF) 1 Page - STMicroelectronics |
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SO16N Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 51 page  This is information on a product in full production. April 2012 Doc ID 16610 Rev 2 1/51 51 L6566BH Multimode controller for SMPS Datasheet — production data 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 ■ -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 SO16N Figure 1. Block diagram + - + - ZERO CURRENT DETECTOR 50 mV 100 mV VCC 915 7 ZCD COMP VFF CS GD 4 11 3 LINE VOLTAGE FEEDFORWARD 1.5 V + - 4.5V DIS 8 LATCH LEB 14V Ref erence voltages 5 VCC 10 Internal supply VREF UVLO VOLTAGE REGULATOR & ADAPTIVE UVLO FMOD 6 IC_LATCH DISABLE UVLO Q 12 + - + - 0.450V 0.485V AC_OK 16 13 AC_FAIL UVLO_SHF VCC 5.7V 1 HV SOFT-START & FAULT MNGT 14 SS OSC MODE/SC +- OSCILLATOR R S Q MODE SELECTION & TURN-ON LOGIC OVERVOLTAGE PROTECTION 15 µA 7.7V OCP PWM TIME OUT TIME OUT + - Vth BURST-MODE LOW CLAMP & DISABLE OFF2 OFF2 IHV Hiccup-mode OCP logic 3 V 400 uA DRIVER OCP2 6.4V VCC Icharge OVPL OVP OVPL OVP www.st.com |
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