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PDF TDA4817 Data sheet ( Hoja de datos )

Número de pieza TDA4817
Descripción Power Factor Controller IC for High Power Factor and Active Harmonic Filtering
Fabricantes Siemens Semiconductor 
Logotipo Siemens Semiconductor Logotipo



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Power Factor Controller
IC for High Power Factor and
Active Harmonic Filtering
Advance Information
Features
q IC for sinusoidal line-current consumption
q Power factor approaching 1
q Controls boost converter as an active harmonics filter
q Direct drive of SIPMOS transistor
q Zero crossing detector for discontinuous operation mode
with variable frequency
q 110/220 V AC operation without switchover
q Standby current consumption of 0.5 mA
P-DIP-8-1
TDA 4817
Bipolar IC
P-DSO-8-1
Type
w TDA 4817
w TDA 4817 G
w = New type
Ordering Code
Q67000-A8298
Q67000-A8299
Package
P-DIP-8-1
P-DSO-8-1 (SMD)
The TDA 4817 contains all functions for designing electronic ballasts and switched-mode power
supplies with sinusoidal line current consumption and a power factor approaching 1.
The TDA 4817 controls a boost converter as an active harmonic filter in a discontinuous (triangular
shaped current) mode with variable frequency.
A typical application is in electronic ballasts, especially when a large number of such lamps are
concentrated on one line supply point.
The output voltage of this filter is regulated with high efficiency. Therefore the device can be easily
operated on different line voltages (110/220 VAC) without any switchover.
The TDA 4817 is an 8-pin-economy-version of the TDA 4814 A without reference voltage output
and start/stop monitoring circuit.
Semiconductor Group
1
05.95

1 page




TDA4817 pdf
TDA 4817
Absolute Maximum Ratings
Parameter
Supply voltage
Inputs
Comparator
Operational amplifier
Multiplier
Output OP
Z-current VS-GND
Driver output QSIP
QSIP clamping diodes
Detector input
Detector clamping diodes
Junction temperature
Storage temperature
Thermal resistance
system-air
TDA 4817
TDA 4817 G
Symbol
VS
VC
VOP
VM1
VQOP
IZ
VQSIP
IQSIP
VDet
IDet
Tj
Tstg
R th SA
R th SA
Limit Values
min. typ. max.
– 0.3
– 0.3
– 0.3
– 0.3
VZ
20
20
20
– 0.3
0
– 0.3
– 10
6
100
VS
10
0.9 6
– 10 10
150
– 55 125
100
170
Unit Remarks
V VZ = Z-voltage
V
V
V
V
mA Observe P max
V
mA VQSIP > VS or
VQSIP < – 0.3 V
V
mA VDet > 6 V or
VDet < 0.9 V
˚C
˚C
K/W P-DIP-8 package
K/W P-DSO-8 package
Operating Range
Supply voltage
Z-current
Driver current
Ambient temperature
VS
IZ
IQSIP
TA
VSon
0
– 500
– 25
VZ V 1)
100 mA Observe Pmax
500 mA Observe Pmax
85 ˚C
Semiconductor Group
5

5 Page





TDA4817 arduino
TDA 4817
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 lamps and
in switched-mode power supplies, reducing the harmonic content of the incoming, non rectified
mains current and if suitably dimensioned permitting operation at input voltages between 90 V and
270 V.
Benefits of TDA 4817 in Electronic Ballasts and SMPS
q Sinusoidal line current consumption
q 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 become more
reliable because of the lower peak currents.
q Active harmonic filtering reduces harmonic content in line current to meet VDE/IEC/EN-
standards.
q Wide-range power supplies are easier to implement for AC input voltages of 90 to 250 V without
switch-over.
q Preregulated DC output voltage provides optimal operating conditions for a subsequent
converter.
q Reduced smoothing capacitance:
For a given amplitude of the 100/120 Hz ripple voltage the smoothing capacitance can be
reduced by 50 % in comparison to a conventional rectifier circuit.
Reduced choke size:
Rectifier circuits capable of more than 200 W usually employ chokes to decrease the charging
current ot the capacitor. These chokes are larger than those used in a preregulator with power-
factor control.
q Higher efficiency:
A preregulator does cause some additional losses, but these are more than compensated for by
the cut in losses created by the rectifier configuration and the optimum operating conditions that
are produced for a subsequent converter, even in the event of supply-voltage fluctuations.
Semiconductor Group
11

11 Page







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