- 您现在的位置：买卖IC网 > PDF目录377498 > IR2167 (International Rectifier) PFC BALLAST CONTROL IC PDF资料下载
参数资料
| 型号： | IR2167 |
| 厂商： | International Rectifier |
| 英文描述： | PFC BALLAST CONTROL IC |
| 中文描述： | PFC的镇流器控制IC |
| 文件页数： | 19/30页 |
| 文件大小： | 937K |
| 代理商： | IR2167 |
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页当前第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页
IR2167(
S
)
www.irf.com
19
As the external capacitor on the COMP pin begins to charge,
the PFC MOSFET on time duration increases. The gain of
OTA1 is at its maximum value (See Figures 10 & 11).
Maximum gain is desireable to raise the Bus voltage to its
nominal value as quickly as possible. When the voltage at
the VBUS pin reaches 3V, the gain of OTA1 decreases to its
nominal value. The BUS voltage continues to increase to its
nominal value at which time the voltage measured at the
VBUS pin equals 4V. The gain of OTA1 now increases to
its maximum value and remains there until the Run mode.
This is necessary because if VBUS overshoots its nominal
value, the circuit can react quickly to correct the error. Also,
during ignition, there is a sudden increase in load current
which can cause the Bus voltage to sag. With maximum
gain, OTA1 can quickly restore the DC Bus voltage to its
nominal value.
When the AC line voltage is applied to the ballast, VCC
rises to 15V. The PFC section is not enabled until the begin-
ning of the Preheat mode of operation. By not enabling the
PFC section until the beginning of the Preheat mode, the
DC Bus voltage in the ballast is not yet boosted to its nomi-
nal running value. This helps alleviate the initial flash of the
lamp when the half-bridge driver section first begins to switch.
When the PFC circuit is first enabled, (See Figure 10),
the voltage at the VBUS and COMP pins is low. The PFC
Figure 10:
PFC Section
MOSFET is turned on with minimum on time and LPFC is
shorted to ground and begins charging. The PFC MOSFET
then turns off and LPFC begins to discharge into the DC
BUS capacitor.
COMP4 has a 4.3V threshold with hysteresis so that if
the voltage at the VBUS pin overshoots the 4.0V threshold,
the PFC MOSFET will not turn on again until the voltage at
the VBUS pin drops to approximately 4.0V. This effectively
limits ths maximum bus voltage to approximately 8% greater
than the regulated level.
In some instances, the line voltage may be too
high. This causes the AC rectified line current to directly
charge the DC Bus capacitor without being boosted. Since
the current never drops to zero, the ZX pin never goes high
and the PFC MOSFET never turns on. The Watch Dog Timer
circuit provides a pulse to turn on the PFC MOSFET if no
pulse is detected at the ZX pin for 500mS. This enables the
PFC circuitry to regulate the DC Bus voltage at its nominal
value
10
9
11
Q
S
R
Q
Q
S
R
Q
1.0V
VBUS
COMP
ZX
7.6V
4.0V
GM
hi
OTA1
3.0V
COMP1
COMP2
RS1
RS2
4.3V
12
PFC
Q
S
R1
R2 Q
Q
S
R1
R2 Q
COMP3
COMP4
COMP5
RS3
RS4
VCC
Run Mode
Signal
From Fault
Detection Circuitry
4.0V
M1
WATCH-
DOG
TIMER
M2
C1
相关PDF资料 |
PDF描述 |
|---|---|
| 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 |
| IR2170S | OVER CURRENT SENSING IC |
| IR2172 | LINEAR CURRENT SENSING IC |
| IR2172S | Linear Current Sensing. Direct Digital PWM Output. 1.5us Over-current Trip Signal Delay in a 8-lead SOIC package |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IR2167PBF | 功能描述:IC PFC BALLAST CTLR 20DIP RoHS:是 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 |
| IR2167S | 功能描述:IC CNTRLR BALLAST PFC 20-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 |
| IR2167SPBF | 功能描述:IC CTLR BALLAST PFC 20-SOIC RoHS:是 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 |
| IR2167STRPBF | 功能描述:功率因数校正 IC PFC Ballast Control, Thermal Overload Protection, 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 |
| IR2170 | 功能描述:IC CURRENT SENSE 600V 1MA 8-DIP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳流/电流管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 功能:电流开关 检测方法:- 精确度:±10% 输入电压:1.7 V ~ 5.5 V 电流 - 输出:600mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-UFQFN 供应商设备封装:10-UTQFN（1.4x1.8） 包装:管件 |
发布紧急采购，3分钟左右您将得到回复。