- 您现在的位置：买卖IC网 > PDF目录299960 > TDA4863-2G (INFINEON TECHNOLOGIES AG) POWER FACTOR CONTROLLER, PDSO8 PDF资料下载
参数资料
| 型号： | TDA4863-2G |
| 厂商： | INFINEON TECHNOLOGIES AG |
| 元件分类： | 稳压器 |
| 英文描述： | POWER FACTOR CONTROLLER, PDSO8 |
| 封装： | PLASTIC, SO-8 |
| 文件页数： | 27/27页 |
| 文件大小： | 284K |
| 代理商： | TDA4863-2G |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页当前第27页
TDA4863-2
Functional Description
Data Sheet
9
V1.2, 2004-02
2
Functional Description
2.1
Introduction
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 TDA4863-2 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.
2.2
IC Description
The TDA4863-2 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.
2.3
Voltage 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 integrators bandwidth is set below 20 Hz in order to suppress
the 100 Hz ripple of the rectified line voltage. The voltage amplifier is internally
compensated and has a gain bandwidth of 5 MHz (typ.) and a phase margin of 80
degrees. The non-inverting input is biased internally to 2.5 V. The output is directly
connected to the multiplier input.
The gate drive is disabled when VSENSE voltage is less than 0.2 V or VAOUT voltage
is less than 2.2 V.
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.
相关PDF资料 |
PDF描述 |
|---|---|
| TDA8042MDK-T | 175 MHz - 325 MHz RF/MICROWAVE QUADRAPHASE DEMODULATOR |
| TDC550MM-5 | INTERCONNECTION DEVICE |
| TDP08H0SBD1R | PIANO DIP SWITCH-8SWITCHES, SPST, MOMENTARY,0.025A, 24VDC, SURFACE MOUNT-STRAIGHT |
| TDP08H0SBD1 | PIANO DIP SWITCH-8SWITCHES, SPST, MOMENTARY,0.025A, 24VDC, SURFACE MOUNT-STRAIGHT |
| TDPXEB-40M34S-0301 | 40 CONTACT(S), FEMALE, MULTIWAY RACK AND PANEL CONN, SOLDER, RECEPTACLE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TDA48632GNT | 功能描述:功率因数校正 IC PFC IC High Power and Low THD 20V RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| TDA48632GXUMA2 | 制造商:Infineon Technologies AG 功能描述:Power Factor Correction CONTRLR 0.02mA 8-Pin DSO 制造商:Infineon Technologies AG 功能描述:INDUSTRIAL IC - Tape and Reel 制造商:Infineon Technologies AG 功能描述:IC PFC CONTROLLER DCM DSO8 |
| TDA48632HKLA1 | 制造商:Infineon Technologies AG 功能描述:Power Factor Correction CONTRLR 0.02mA 8-Pin PDIP 制造商:Infineon Technologies AG 功能描述:INDUSTRIAL IC - Rail/Tube 制造商:Infineon Technologies AG 功能描述:IC PFC CONTROLLER DCM 8DIP |
| TDA4863A | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Vertical deflection booster |
| TDA4863AJ | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Vertical deflection booster |
发布紧急采购，3分钟左右您将得到回复。