ST L6565N

Изолированный10,3 В ~ 18 В

Overview

The L6565N is a current-mode primary SMPS Controller specifically designed to build offline Quasi-resonant ZVS (zero voltage switching at switch turn-on) flyback 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

Applications

• AC/DC Adaptors/Chargers for Cell Phones
• AC/DC Adaptors/Chargers for Cordless Phone
• AC/DC Adaptors/Chargers for PDAs
• AC/DC Adaptors/Chargers for E-books
• Adaptors for Portable Media Player
• Adaptors for DSCs
• Set-top boxes
• DVD players
• Records
• Linear Adapter Replacements