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参数资料
| 型号： | IRS2168DSTRPBF |
| 厂商： | International Rectifier |
| 文件页数： | 12/21页 |
| 文件大小： | 0K |
| 描述： | IC PFC & BALLAST CONTROL 16-SOIC |
| 标准包装： | 1 |
| 类型： | PFC/镇流器控制器 |
| 频率： | 42.5 ~ 46.5 kHz |
| 电流 - 电源： | 10mA |
| 电流 - 输出： | 260mA |
| 电源电压： | 12.5 V ~ 15.6 V |
| 工作温度： | -25°C ~ 125°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC N |
| 包装： | 标准包装 |
| 配用： | IRPLLNR5-ND - KIT BALLAST UNIV FLUOR 54W TL5 |
| 其它名称： | IRS2168DSTRPBFDKR |
IRS2168D(S)PbF
Preheat Mode (PH)
The IRS2168D enters preheat mode when V CC exceeds
the UVLO positive-going threshold (V CCUV+ ). The internal
MOSFET that connects pin CPH to COM is turned off and
an external resistor (Fig. 3) begins to charge the external
preheat timing capacitor (C PH ). LO and HO begin to
oscillate at a higher soft-start frequency and ramp down
quickly to the preheat frequency. The VCO pin is
off and resistor R PH is disconnected from COM. The
equivalent resistance at the FMIN pin increases from the
parallel combination (R PH //R FMIN ) to R FMIN at a rate
programmed by the external capacitor at pin VCO (C VCO )
and resistor R PH . This causes the operating frequency to
ramp down smoothly from the preheat frequency through
the ignition frequency to the final run frequency. During
this ignition ramp, the frequency sweeps through the
resonance frequency of the lamp output stage to ignite
the lamp.
connected to COM through an internal
V CPH
V BUS (+)
VCC
R CPH
2/3*V CC
C PH
CPH
3
MODE
16
HO
MHS
1/3*V CC
Half-
C VCO
R PH
VCO
FMIN
4
M1
Half-
Bridge
Driver
15
VS
Bridge
Output
I LOAD
V VCO
t PH = R CPH * C PH
t
5
OSC.
LO
R FMIN
11
10
CS R 3
MLS
2V
t RAMP = R PH * C VCO
t
IRS2168D
12
COM
C CS
R CS
Load
PREHEAT IGNITION RUN
Figure 4: C PH and VCO timing diagram
Return
V BUS (-)
V BUS (+)
VCC
Figure 3: Preheat circuitry
R CPH
MOSFET M1 so the preheat frequency is determined by
C PH
CPH
3
MODE
16
HO
MHS
the equivalent resistance at the FMIN pin formed by the
parallel combination of resistors R FMIN and R PH . The
C VCO
VCO
4
M1
Half-
Bridge
Driver
15
VS
Half-
Bridge
Output
frequency remains at the preheat frequency until the
voltage on pin C PH exceeds approvixmately 2/3*V CC
(V CPHEOP+ ) and the IC enters Ignition Mode. During
preheat mode, the over-current protection on pin CS and
the 65-cycle (n EVENTS ) consecutive over-current fault
counter are both enabled. The PFC circuit is working in
high-gain mode (see PFC section) and keeps the DC bus
R PH
R FMIN
FMIN
5
IGN.
REG.
IRS2168D
OSC.
12
+
-
COM
1.25V
11
10
LO
CS R 3
C CS
I LOAD
MLS
R CS
Load
voltage regulated at a constant level.
Ignition Mode (IGN)
V BUS (-)
Return
www.irf.com
The IRS2168D ignition mode is defined by the second
time C PH charges from 1/3*V CC (V CPHSOI- ) to 2/3*V CC
(V CPHRUN+ ). When the voltage on pin CPH exceeds
2/3*V CC (V CPHRUN+ ) for the first time, pin CPH is discharged
quickly through an internal MOSFET down to 1/3*V CC
(V CPHSO I - ) (see Figs. 4 and 5). The internal MOSFET
turns off and the voltage on pin C PH begins to increase
again. The internal MOSFET M1 at pin V CO turn
Figure 5: Ignition circuitry
The over-current threshold on pin CS will protect the
ballast against a non-strike or open-filament lamp fault
condition. The voltage on pin CS is defined by the lower
half-bridge MOSFET current flowing through the external
current sensing resistor R CS . This resistor programs the
maximum peak ignition current (and therefore peak
Page 12
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IRS2181 | 制造商:IRF 制造商全称:International Rectifier 功能描述:HIGH AND LOW SIDE DRIVER |
| IRS21814 | 制造商:IRF 制造商全称:International Rectifier 功能描述:HIGH AND LOW SIDE DRIVER |
| IRS21814MPBF | 功能描述:功率驱动器IC HI LO SIDE DRVR 600V 10 to 20V 1.4A 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 |
| IRS21814MTRPBF | 功能描述:功率驱动器IC Hi&Lw Sd Drvr Sft Trn On Non Invrt 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 |
| IRS21814PBF | 功能描述:功率驱动器IC Hi&Lw Sd Drvr Sft Trn On Non Invrt 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 |
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