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| 型号： | IR2166PBF |
| 厂商： | International Rectifier |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | PFC & BALLAST CONTROL IC |
| 中文描述： | 功率因数校正 |
| 文件页数： | 22/29页 |
| 文件大小： | 371K |
| 代理商： | IR2166PBF |
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IR2166
22
www.irf.com
lower than the minimum specified ballast input
voltage. This hysteresis will result in clean turn-
on and turnoff of the ballast.
CS and EOL Fault Mode (FAULT)
Should the voltage at the SD/EOL pin exceed 3V
or decrease below 1V during RUN mode, the IC
enters fault mode and all gate driver outputs, HO,
LO and PFC, are latched off in the 'low' state.
CPH is discharged to COM for resetting the
preheat time, and CT is discharged to COM for
disabling the oscillator. To exit fault mode, VCC
must be recycled back below the UVLO negative-
going turn-off threshold, or, the shutdown pin, SD,
must be pulled above 5.2 volts. Either of these
will force the IC to enter UVLO mode (see State
Diagram, page 7). Once VCC is above the turn-
on threshold and SD is below 5.0 volts, the IC
will begin oscillating again in the preheat mode.
The current sense function will force the IC to
enter FAULT mode only after the voltage at the
current sense pin has been pulsed about 25 times
with a voltage greater than 1.3 volts during preheat
and ignition modes only. These over-currents must
occur during the on-time of LO. During run mode,
a single pulse on the CS pin above 1.3V will force
the IC to enter FAULT mode.
II. PFC Section Functional Description
In most electronic ballasts it is necessary to
have the circuit act as a pure resistive load to
the AC input line voltage. The degree to which
the circuit matches a pure resistor is measured
by the phase shift between the input voltage
and input current and how well the shape of the
input current waveform matches the shape of
the sinusoidal input voltage. The cosine of the
phase angle between the input voltage and input
current is defined as the power factor (PF), and
how well the shape of the input current waveform
matches the shape of the input voltage is
determined by the total harmonic distortion
(THD). A power factor of 1.0 (maximum)
corresponds to zero phase shift and a THD of
0% represents a pure sinewave (no distortion).
For this reason it is desirable to have a high PF
and a low THD. To achieve this, the IR2166
includes an active power factor correction (PFC)
circuit which, for an AC line input voltage,
produces an AC line input current. The control
method implemented in the IR2166 is for a boost-
type converter (Figure 6) running in critical-
conduction mode (CCM). This means that during
each switching cycle of the PFC MOSFET, the
circuit waits until the inductor current discharges
to zero before turning the PFC MOSFET on again.
The PFC MOSFET is turned on and off at a
much higher frequency (>10KHz) than the line
input frequency (50 to 60Hz).
LO
CS
25 Pulses
Run Mode
Fault Mode
2.0V
Figure 5: FAULT counter during preheat and ignition
CBUS
+
(+)
(-)
MPFC
LPFC
DPFC
DC Bus
Figure 6: Boost-type PFC circuit
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IR2166PBF | 制造商:International Rectifier 功能描述:Controller IC Output Voltage Max.:25V |
| IR2166S | 功能描述:IC PFC/BALLAST CONTROL 16-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 照明，镇流器控制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 类型:CCFL 控制器 频率:40 ~ 80 kHz 电流 - 电源:5mA 电流 - 输出:- 电源电压:4.5 V ~ 5.5 V 工作温度:-40°C ~ 85°C 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:带卷 (TR) 其它名称:90-3991V+V01 |
| IR2166SPBF | 功能描述:功率驱动器IC PFC BALLAST CTRL IC 600V 15.6V VCC ESD RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| IR2166STRPBF | 功能描述:功率驱动器IC PFC Ballast Cntrl RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| IR2167 | 制造商:IRF 制造商全称:International Rectifier 功能描述:PFC BALLAST CONTROL IC |
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