TDA4817 Siemens Semiconductor, TDA4817 Datasheet
TDA4817
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TDA4817 Summary of contents
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Power Factor Controller IC for High Power Factor and Active Harmonic Filtering Advance Information 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 ...
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TDA 4817 Pin Configurations (top view) Pin Definitions and Functions Pin Symbol Function 1 GND Ground 2 QSIP Driver output V 3 Supply voltage – Comparator input 5 Multiplier input IM1 6 OP – Input 7 QOP/IM2 ...
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Block Diagram Semiconductor Group 3 TDA 4817 ...
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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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Absolute Maximum Ratings Parameter Supply voltage Inputs Comparator Operational amplifier Multiplier Output OP Z-current V -GND S Driver output QSIP QSIP clamping diodes Detector input Detector clamping diodes Junction temperature Storage temperature Thermal resistance system-air TDA 4817 TDA 4817 G ...
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Characteristics < < – ˚C SON Parameter Current Consumption Without load on driver V (QSIP) and ; QSIP low REF Load on QSIP with SIPMOS gate; dynamic operation ...
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Characteristics (cont’ < < – ˚C SON Parameter Z-Diode ( Z-voltage (observe ) max Multiplier Quadrant for input voltages Input voltage M1 Reference level ...
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Multiplier Characteristics Semiconductor Group 8 TDA 4817 ...
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Discontinuous Operation Mode with Variable Frequency The TDA 4817 works 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 current ...
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Application Circuit: Electronic Ballast Semiconductor Group 10 TDA 4817 ...
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The TDA 4817 controls 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 improves the power factor in electronic ballasts for fluorescent ...
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Summary of Effects of DC-Voltage Preregulation with Power-Factor Control Parameter Mean DC supply voltage Maximum DC supply voltage with line overvoltage Minimurn DC supply voltage with line undervoltage Relative reverse voltage of diodes with line overvoltage 1 Relative forward resistance ...