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TDA4862G Datasheet(PDF) 2 Page - Infineon Technologies AG |
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TDA4862G Datasheet(HTML) 2 Page - Infineon Technologies AG |
2 / 18 page TDA 4862 2 200 5-02-17 Description The TDA 4862 is excellent convenient for designing a preconverter in ballasts and switched mode power supplies with sinusoidal line current consumption and a power factor approaching unity. The TDA 4862 controls a boost converter as an active harmonics filter in a discontinuous mode (free oscillating triangular shaped current mode). The TDA 4862 comprises an internal start-up timer, a high gain voltage amplifier, an one quadrant multiplier for approaching unity power factor, a zero current detector, PWM and logic circuitry, and totem pole MOSFET gate driver. Protective features are: input undervoltage lockout with hysteresis, V CC zener clamp, cycle-by-cycle current limiting, output voltage limiting for fast and slow load changes up to open circuit, and a sinking gate driver current activated whenever undervoltage mode occurs. The output voltage of this preconverter is regulated with high accuracy. Therefore the device can be used for world-wide line voltages without switches. The TDA 4862 is the improved version of the TDA 4817 with a pinout equivalent to world standard. Figure 1 Pin Configuration (top view) TDA 4862 TDA 4862 G MULTIN 4 3 2 1 IEP01748 5 6 GND DETIN 7 8 GTDRV VCC AOUT V SENSE V SENSE Ι 4 3 2 1 IEP01749 5 6 7 8 SENSE Ι MULTIN AOUT V SENSE V CC V GTDRV GND DETIN |
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