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Description

The TDA 16846-2 (this name is used in the description for all types) is optimized to control free running or fixed frequency flyback converters with or without Power Factor Correction (Current Pump). To provide low power consumption at light loads, this device reduces the switching frequency in small steps with load, towards an adjustable minimum (e. g. 20 kHz in standby mode).

Features

? Line Current Consumption with PFC

? Low Power Consumption

? Stable and Adjustable Standby Frequency

? Very Low Start-up Current

? Soft-Start for Quiet Start-up

? Free usable Fault Comparators

? Synchronization and Fixed Frequency Circuits

? Over- and Undervoltage Lockout

? Switch Off at Mains Undervoltage

? Temporary High Power Circuit (only TDA 16847-2)

? Mains Voltage Dependent Fold Back Point Correction

? Continuous Frequency Reduction with Decreasing Load

? Adjustable and Voltage Dependent Ringing Suppression Time