- 您现在的位置：买卖IC网 > PDF目录377498 > IR2166 (International Rectifier) RES 560 OHM 1/10W 5% SM PDF资料下载
参数资料
| 型号： | IR2166 |
| 厂商： | International Rectifier |
| 英文描述： | RES 560 OHM 1/10W 5% SM |
| 中文描述： | 功率因数校正 |
| 文件页数： | 23/29页 |
| 文件大小： | 371K |
| 代理商： | IR2166 |
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页当前第23页第24页第25页第26页第27页第28页第29页
IR2166
www.irf.com
23
When the switch MPFC is turned on, the inductor
LPFC is connected between the rectified line
input (+) and (-) causing the current in LPFC to
charge up linearly. When MPFC is turned off,
LPFC is connected between the rectified line
input (+) and the DC bus capacitor CBUS
(through diode DPFC) and the stored current in
LPFC flows into CBUS. As MPFC is turned on
and off at a high-frequency, the voltage on CBUS
charges up to a specified voltage. The feedback
loop of the IR2166 regulates this voltage to a
fixed value by continuously monitoring the DC
voltage and adjusting the on-time of MPFC
accordingly. For an increasing DC bus the on-
time is decreased, and for a decreasing DC bus
the on-time is increased. This negative feedback
control is performed with a slow loop speed and
a low loop gain such that the average inductor
current smoothly follows the low-frequency line
input voltage for high power factor and low THD.
The on-time of MPFC therefore appears to be
fixed (with an additional modulation to be
discussed later) over several cycles of the line
voltage. With a fixed on-time, and an off-time
determined by the inductor current discharging
to zero, the result is a system where the
switching frequency is free-running and
constantly changing from a high frequency near
the zero crossing of the AC input line voltage,
to a lower frequency at the peaks (Figure 7).
Figure 7: Sinusoidal line input voltage (solid line), triangular
PFC Inductor current and smoothed sinusoidal line input
current (dashed line) over one half-cycle of the line input
voltage.
When the line input voltage is low (near the zero
crossing), the inductor current will charge up to
a small amount and the discharge time will be
fast resulting in a high switching frequency.
When the input line voltage is high (near the
peak), the inductor current will charge up to a
higher amount and the discharge time will be
longer giving a lower switching frequency. The
triangular PFC inductor current is then smoothed
by the EMI filter to produce a sinusoidal line
input current.
The PFC control circuit of the IR2166 (Figure 8)
only requires four control pins: VBUS, COMP,
ZX and PFC. The VBUS pin is for sensing the
DC bus voltage (via an external resistor voltage
divider), the COMP pin programs the on-time of
MPFC and the speed of the feedback loop, the
ZX pin detects when the inductor current
discharges to zero (via a secondary winding
from the PFC inductor), and the PFC pin is the
low-side gate driver output for MPFC.
V, I
t
相关PDF资料 |
PDF描述 |
|---|---|
| IR2166PBF | PFC & BALLAST CONTROL IC |
| IR2166S | PFC & BALLAST CONTROL IC |
| IR2167 | PFC BALLAST CONTROL IC |
| IR2167S | PFC Ballast Control. Thermal Overload Protection. Brown Out Protection. Programmable Preheat and Frequency. Programmable Deadtime in a 20 Lead SOIC package |
| IR2170 | OVER CURRENT SENSING IC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IR2166PBF | 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 |
| 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 |
发布紧急采购，3分钟左右您将得到回复。