TDA4814 Siemens Semiconductor, TDA4814 Datasheet
TDA4814
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TDA4814 Summary of contents
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Power Factor Controller IC for High Power Factor and Active Harmonic Filter Features IC for sinusoidal line-current consumption Power factor approaching 1 Controls boost converter as an active harmonics filter Direct drive of SIPMOS transistor Zero crossing detector for discontinuous ...
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Pin Configurations (top view) Pin Definitions and Functions Pin Symbol 1 GND 2 QSIP – ICOMP Amp START 7 N. START 9 Q STOP 10 I STOP 11 I ...
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The TDA 4814 A contains all functions for designing electronic ballasts and switched-mode power supplies with sinusoidal line current consumption and a power factor approaching 1. They control a boost converter as an active harmonic filter in a discontinuous (triangular ...
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Circuit Description This device has a conditioning circuit for the internal power supply. It allows standby operation with very low current consumption (less than 0.5 mA), a hysteresis between enable and switch-off levels and an internal voltage stabilization. An integrated ...
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Output Driver The output driver is intended to drive a SIPMOS transistor directly designed as a push-pull stage. Both the capacitive input impedance and keeping the gate level at zero potential in standby operation by an internal 10-k ...
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Absolute Maximum Ratings T = – 125 ˚C A Parameter Supply voltage Inputs Comparator Op Amp Multiplier Outputs Multiplier Op Amp V Z current GND S Driver output QSIP QSIP clamping diodes Input START STOP Output START STOP ...
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Absolute Maximum Ratings (cont’ – 125 ˚C A Parameter Operating Range Supply voltage Z-current Driver current Operating temperature Characteristics < < – ˚ ...
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Characteristics (cont’ < < – ˚ Parameter Operational Amplifier (Op Amp) Open-loop voltage gain Input offset voltage Input current Common-mode input voltage range Output current ...
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Characteristics (cont’ < < – ˚ Parameter 2) Multiplier (M1) Quadrant for input voltages Input voltage M1 Reference level for M1 Input voltage M2 Reference ...
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Characteristics (cont’ < < – ˚ Parameter Detector (I DET) Upper switching voltage for voltage rising (H) Lower switching voltage for voltage falling (L) Switching ...
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Multiplier Characteristics Semiconductor Group 11 TDA 4814 ...
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Discontinuous Operation Mode with Variable Frequency The TDA 4814 A work in a discontinuous operation mode with variable frequency. The principle of a freely oscillating controller exploits the physical relationship between current and voltage at the boost converter choke. The ...
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Typical Application Circuit Boost Converter with TDA 4814 A The TDA 4814A control a boost converter as an active harmonic filter, drawing a sinusoidal line current and providing a regulated DC voltage at the converter output. The active harmonic filter ...
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Benefits of TDA 4814 A in Electronic Ballasts and SMPS Sinusoidal line current consumption Power Factor approaching 1 increases the power available from the AC line by more than 35 % compared to conventional rectifier circuits. Circuit breakers and connectors ...