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TDA16847G Datasheet(PDF) 3 Page - Infineon Technologies AG |
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TDA16847G Datasheet(HTML) 3 Page - Infineon Technologies AG |
3 / 28 page Data Sheet 3 2000-01-14 Controller for Switch Mode Power Supplies Supporting Low Power Standby and Power Factor Correction TDA 16846 TDA 16847 Preliminary Data Bipolar IC P-DSO-14-3 P-DIP-14-3 1 Overview 1.1 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 Facility • Over- and Undervoltage Lockout • Switch Off at Mains Undervoltage • Temporary high power circuit (only TDA 16847) • Mains Voltage Dependent Fold Back Point Correction • Continuous Frequency Reduction with Decreasing Load • Adjustable and Voltage Dependent Ringing Suppression Time 1.2 Description The TDA 16846 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 continuously with load, towards an adjustable minimum (e. g. 20 kHz in standby mode). Additionally, the start up current is very low. To avoid switching stresses of the power devices, the power transistor is always switched on at minimum voltage. A special circuit is implemented to avoid jitter. The device has several protection functions: V CC over- and undervoltage, mains undervoltage, current limiting and 2 free usable fault comparators. Regulation can be done by using the internal error amplifier or an opto coupler feedback (additional input). The output driver is ideally suited for driving a power MOSFET, but it can also be used for a bipolar transistor. Fixed frequency and synchronized operation are also possible. Type Ordering Code Package TDA 16846 Q67000-A9377 P-DIP-14-3 TDA 16847 Q67000-A9378 P-DIP-14-3 TDA 16846G Q67006-A9430 P-DSO-14-3 TDA 16847G Q67006-A9412 P-DSO-14-3 |
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