TDA4863-TDA4863G Fast Delivery |IC PHOENIX CO.,LIMITED

TDA4863G ,Power Control ICsFunctional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..
TDA4864AJ ,Vertical deflection booster
TDA4864J ,Vertical deflection booster
TDA4865AJ , eflection boosters for use in vertical deflection systems for frame frequencies up to 200 Hz.
TDA4865AJ , eflection boosters for use in vertical deflection systems for frame frequencies up to 200 Hz.
TDA4866J ,25 V, Full bridge current driver vertical deflection booster
TFM-3 ,Circuits - FREQUENCY MIXERS
TFM-3 ,Circuits - FREQUENCY MIXERS
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TFP101PZP , T1 PANELBUS DIGITAL RECEIVER
TFP201APZP ,PanelBus DVI Receiver 112MHz, HSYNC fix  SLDS116A - MARCH 2000 − REVISED JUNE 2000 Supports SXGA R ..
TFP201PZP ,PanelBus DVI Receiver 112MHz  SLDS116A - MARCH 2000 − REVISED JUNE 2000 Supports SXGA R ..

TDA4863-TDA4863G
Power Control ICs
Boost Controller
TDA4863
Power Factor Controller
IC for High Power Factor
and Low THD
For questions on technology, delivery and prices please contact the Infineon
Technologies Offices in Germany or the Infineon Technologies Companies and
Representatives worldwide: see our webpage at http://www.infineon.com.
TDA4863
Revision History:2003-05V1.0
Previous Version:
Table of ContentsPageOverview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2Improvements Referred to TDA 4862 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.4Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.5Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2IC Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.3Voltage Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.4Overvoltage Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.5Multiplier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.6Current Sense Comparator, LEB and RS Flip-Flop . . . . . . . . . . . . . . . . . . 10
2.7Zero Current Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.8Restart Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.9Undervoltage Lockout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.10Gate Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.11Signal Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.3Electrical Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Application Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.1Results of THD Measurements with Application Board Pout=110W . . . . 22
Power Factor Controller
IC for High Power Factor
and Low THD
TDA4863
Final DataBoost Controller
1Overview
1.1FeaturesIC for sinusoidal line-current consumptionPower factor achieves nearly 1Controls boost converter as active harmonic
filter for low THDStart up with low current consumptionZero current detector for discontinuous
operation modeOutput overvoltage protectionOutput undervoltage lockoutInternal start up timerTotem pole output with active shut downInternal leading edge blanking LEB
1.2Improvements Referred to TDA 4862Suitable for universal input applications with low THD at low load conditionsVery low start up currentAccurate OVR and VISENSEmax thresholdCompetition compatible VCC thresholdsEnable threshold referred to VVSENSE
Figure1Typical application
1.3Description
The TDA4863 IC controls a boost converter in a way that sinusoidal current is taken from
the single phase line supply and stabilized DC voltage is available at the output. This
active harmonic filter limits the harmonic currents resulting from the capacitor pulsed
charge currents during rectification. The power factor which describes the ratio between
active and apparent power is almost one. Line voltage fluctuations can be compensated
very efficiently.
1.4Pin Configuration
Figure2Pin Configuration of TDA4863
Pin Definitions and Functions
1.5Block Diagram
Figure3Internal Bolck Diagram
Functional Description2.1Introduction
Conventional electronic ballasts and switch mode power supplies are designed with a
bridge rectifier and a bulk capacitor. Their disadvantage is that the circuit draws power
from the line when the instantaneous AC voltage exceeds the capacitors voltage. This
occurs near the line voltage peak and causes a high charge current spike with following
characteristics: The apparent power is higher than the real power that means low power
factor condition, the current spikes are non sinusoidal with a high content of harmonics
causing line noise, the rectified voltage depends on load condition and requires a large
bulk capacitor, special efforts in noise suppression are necessary.
With the TDA4863 preconverter a sinusoidal current is achieved which varies in direct
instantaneous proportional to the input voltage half sine wave and so provides a power
factor near 1. This is due to the appearance of almost any complex load like a resistive
one at the AC line. The harmonic distortions are reduced and comply with the IEC555
standard requirements.
2.2IC Description
The TDA4863 contains a wide bandwidth voltage amplifier used in a feedback loop, an
overvoltage regulator, an one quadrant multiplier with a wide linear operating range, a
current sense comparator, a zero current detector, a PWM and logic circuitry, a totem-
pole MOSFET driver, an internal trimmed voltage reference, a restart timer and an
undervoltage lockout circuitry.
2.3Voltage Amplifier
With an external capacitor between the pins VSENSE and VAOUT the voltage amplifier
acts like an integrator. The integrator monitors the average output voltage over several
line cycles. Typically the integrator´s bandwidth is set below 20Hz in order to suppress
the 100Hz ripple of the rectified line voltage. The voltage amplifier is internally
compensated and has a gain bandwidth of 5MHz (typ.) and a phase margin of 80
degrees. The non-inverting input is biased internally to 2.5V. The output is directly
connected to the multiplier input.
The gate drive is disabled when VSENSE voltage is less than 0.2V or VAOUT voltage
is less than 2.2V.
If the MOSFET is placed nearby the controller switching interferences have to be taken
into account. The output of the voltage amplifier is designed in a way to minimize these
inteferences.
2.4Overvoltage Regulator
Because of the integrator´s low bandwidth fast changes of the output voltage can’t be
regulated within an adequate time. Fast output changes occur during initial start-up,
sudden load removal, or output arcing. While the integrator´s differential input voltage
remains zero during this fast changes a peak current is flowing through the external
capacitor into pin VAOUT. If this current exceeds an internal defined margin the
overvoltage regulator circuitry reduces the multiplier output voltage. As a result the on
time of the MOSFET is reduced.
2.5Multiplier
The one quadrant multiplier regulates the gate driver with respect of the DC output
voltage and the AC half wave rectified input voltage. Both inputs are designed to achieve
good linearity over a wide dynamic range to represent an AC line free from distortion.
Special efforts have been made to assure universal line applications with respect to a 90
to 270V AC range.
The multiplier output is internally clamped to1.3V. So the MOSFET is protected against
critical operating during start up.
2.6Current Sense Comparator, LEB and RS Flip-Flop
The source current of the MOS transistor is transferred into a sense voltage via the
external sense resistor. The multiplier output voltage is compared with this sense
voltage. Switch on time of the MOS transistor is determined by the comparision result
To protect the current comparator input from negative pulses a current source is inserted
which sends current out of the ISENSE pin every time when VISENSE-signal is falling
below ground potential. An internal RC-filter is connected at the ISENSE pin which
smoothes the switch-on current spike.The remaining switch-on current spike is blanked
out via a leading edge blanking circuit with a blanking time of typ. 200ns.
The RS Flip-Flop ensures that only one single switch-on and switch-off pulse appears at
the gate drive output during a given cycle (double pulse suppression).
2.7Zero Current Detector
The zero current detector senses the inductor current via an auxiliary winding and
ensures that the next on-time of the MOSFET is initiated immediately when the inductor
current has reached zero. This reduces the reverse recovery losses of the boost
converter diode to a minimum. The MOSFET is switched off when the voltage drop of
the shunt resistor exceeds the voltage level of the multiplier output. So the boost current
waveform has a triangular shape and there are no deadtime gaps between the cycles.
This leads to a continuous AC line current limiting the peak current to twice of the
To prevent false tripping the zero current detector is designed as a Schmitt-Trigger with
a hysteresis of 0.5V. An internal 5V clamp protects the input from overvoltage
breakdown, a 0.6V clamp prevents substrate injection. An external resistor has to be
used in series with the auxiliary winding to limit the current through the clamps.
2.8Restart Timer
The restart timer function eliminates the need of an oscillator. The timer starts or restarts
the TDA4863 when the driver output has been off for more than 150µs after the inductor
current reaches zero.
2.9Undervoltage Lockout
An undervoltage lockout circuitry switches the IC on when VCC reaches the upper
threshold VCCH and switches the IC off when VCC is falling below the lower threshold VCCL.
During start up the supply current is less then 100µA.
An internal voltage clamp has been added to protect the IC from VCC overvoltage
condition. When using this clamp special care must be taken on power dissipation.
Start up current is provided by an external start up resistor which is connected from the
AC line to the input supply voltage VCC and a storage capacitor which is connected fromCC to ground. Be aware that this capacitor is discharged before the IC is plugged into
the application board. Otherwise the IC can be destroyed due to the high capacitor
voltage.
Bootstrap power supply is created with the previous mentioned auxiliary winding and a
diode (see “Application Circuit” on Page21).
2.10Gate Drive
The TDA4863 totem pole output stage is MOSFET compatible. An internal protection
ciruitry is activated when VCC is within the start up phase and ensures that the MOSFET
is turned off. The totem pole output has been optimized to minimize cross conduction
current during high speed operation.
2.11Signal Diagrams
Figure4Typical signals
Electrical Characteristics3.1Absolute Maximum Ratings
3.2Characteristics
Unless otherwise stated, -40°C < Tj < 150°C, VCC = 14.5V
Start-Up circuit
Voltage AmplifierGuaranteed by design, not tested

Partno	Mfg	Dc	Qty	Available	Descript
TDA4863	INFINEON	N/a	1700	avai	Vertical deflection booster
TDA4863G	INFINEON	N/a	5703	avai	Power Control ICs