TDA4862集成電路（IC）的PFC（功率因數(shù)校正）規(guī)格書PDF中文資料

TDA4862屬于集成電路（IC）的PFC（功率因數(shù)校正）。由英飛凌科技股份公司制造生產(chǎn)的TDA4862PFC（功率因數(shù)校正）功率因數(shù)校正 (PFC) 是用于調(diào)整交流電路中的電壓和電流之間的相位角，使之趨近于零的半導(dǎo)體器件。不同模式包括平均電流、邊界導(dǎo)通、連續(xù)導(dǎo)通、臨界導(dǎo)通、電流控制式頻率折返、不連續(xù)和不連續(xù)導(dǎo)通，開關(guān)頻率從 6 kHz 至 1.7 MHz 可調(diào)。

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, VCC 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.

Features

? IC for sinusoidal line-current consumption

? Power factor approaching 1

? Controls boost converter as an active harmonics filter

? Internal start-up with low current consumption

? Zero current detector for discontinuous operation mode

? High current totem pole gate driver

? Trimmed ± 1.4 internal reference

? Undervoltage lock-out with hysteresis

? Very low start-up current consumption

? Pin compatible to world standard

? Fast overvoltage regulator

? Current sense input with internal low pass filter