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L6565 IC – (SMD Package) – Quasi-Resonant SMPS Controller IC

82.00 Excluding tax

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The L6565 is a current-mode primary controller IC, specifically designed to build offline Quasi-resonant ZVS (Zero Voltage Switching at switch turn-on) fly-back converters. Quasi-resonant operation is achieved by means of a transformer demagnetization sensing input that triggers MOSFET’s turn-on.
Converter’s power capability variations with the mains voltage are compensated by line voltage feedforward. At light load the device features a special function that automatically lowers the operating frequency still maintaining the operation as close to ZVS as possible. In addition to very low start-up and quiescent currents, this feature helps keep low the consumption from the mains at light load and be Blue Angel and Energy Star compliant.
The IC includes also a disable function, an on-chip filter on current sense, an error amplifier with a precise reference voltage for primary regulation and an effective two-level overcurrent protection.
Features :-
  • QUASI-RESONANT (QR) ZERO-VOLTAGESWITCHING (ZVS) TOPOLOGY
  • LINE FEED FORWARD TO DELIVER CONSTANT POWER vs. MAINS CHANGE
  • FREQUENCY FOLDBACK FOR OPTIMUM STANDBY EFFICIENCY
  • PULSE-BY-PULSE & HICCUP-MODE OCP
  • ULTRA-LOW START-UP (< 70µA) AND QUIESCENT CURRENT (< 3.5mA)
  • DISABLE FUNCTION (ON/OFF CONTROL)
  • 1% PRECISION (@ Tj = 25°C) INTERNAL REFERENCE VOLTAGE
  • ±400mA TOTEM POLE GATE DRIVER WITH UVLO PULL-DOWN
  • BLUE ANGEL, ENERGY STAR, ENERGY 2000 COMPLIANT
Applications :-
  • TV/MONITOR SMPS
  • AC-DC ADAPTERS/CHARGERS
  • DIGITAL CONSUMER
  • PRINTERS, FAX MACHINES, PHOTOCOPIERS AND SCANNERS

* product image for illustration purposes only. actual product may vary.

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