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TDA4862 Datasheet(PDF) 2 Page - Siemens Semiconductor Group

Part No. TDA4862
Description  Power-Factor Controller PFC IC for High Power Factor and Active Harmonic Filter
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Maker  SIEMENS [Siemens Semiconductor Group]
Homepage  http://www.siemens.com/
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 2 page
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TDA 4862
Semiconductor Group
2
1998-02-16
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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