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参数资料
| 型号： | IRPLLNR2E |
| 厂商： | International Rectifier |
| 文件页数： | 10/16页 |
| 文件大小： | 0K |
| 描述： | KIT BALLAST LINEAR INT 230VAC |
| 标准包装： | 1 |
| 其它名称： | *IRPLLNR2E |
Figure 7: Typical lamp voltage at startup;
f Startup = f P reheat
Figure 8: Improved lamp voltage at startup;
f Startup > f P reheat
The duration of the Preheat mode as well as which mode of operation the ballast is operating in is
determined by the voltage on the CPH pin of IC2. At the completion of the UVLO mode, Preheat
mode is entered and an internal current source is activated at the CPH pin of IC2 which begins to
charge up capacitor CPH. The ballast remains in the Preheat mode until the voltage on the CPH
pin of IC2 exceeds the Ignition Ramp mode threshold (4V).
Ignition Ramp Mode
At the completion of the Preheat mode (4V < CPH
pin < 5.1V) the ballast switches to the Ignition Ramp
mode and the frequency ramps down to the ignition
frequency. The frequency ramping is accomplished
by turning off the internal open drain MOSFET on
the RPH pin of IC2 (see Figure 1, IR21571 block
diagram). Resistor RPH is no longer connected di-
rectly in parallel with resistor RT. The shift in frequency
does not occur in a step function but rather with an
exponential decay because of capacitor CRAMP in
series with resistor RPH to ground. The duration of
this frequency ramp is determined by the time con-
stant of the RC combination of capacitor CRAMP
and resistor RPH. The minimum frequency of oscil-
lation occurs at the end of this ramp and is deter-
mined by resistor RT and capacitor CT. During this
ramping downward of the frequency, the voltage
across the lamp increases in magnitude as the
frequency approaches the resonant frequency of
the LC load circuit until the lamp ignition voltage
10
Figure 9: Upper trace: voltage on capacitor
CRAMP during Ignition Ramp mode
Lower trace: Lamp voltage during Ignition
Ramp mode.
www.irf.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IRPLLNR2U | 功能描述:BALLAST 32W/T8 120V AC IR21571 RoHS:否 类别:编程器，开发系统 >> 过时/停产零件编号 系列:- 标准包装:1 系列:- 类型:MCU 适用于相关产品:Freescale MC68HC908LJ/LK（80-QFP ZIF 插口） 所含物品:面板、缆线、软件、数据表和用户手册 其它名称:520-1035 |
| IRPLLNR3 | 制造商:IRF 制造商全称:International Rectifier 功能描述:Universal Input Linear Fluorescent Ballast using the IR2167 |
| IRPLLNR4 | 功能描述:BALLAST UNIV INP FLUOR IR2166 RoHS:否 类别:编程器，开发系统 >> 过时/停产零件编号 系列:- 标准包装:1 系列:- 类型:MCU 适用于相关产品:Freescale MC68HC908LJ/LK（80-QFP ZIF 插口） 所含物品:面板、缆线、软件、数据表和用户手册 其它名称:520-1035 |
| IRPLLNR5 | 功能描述:电源管理IC开发工具 Uni Inpt Lin Fluor Ballast 54W TL5 Lamp RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| IRPLLNR7 | 功能描述:电源管理IC开发工具 Flourescent Ballast Using IRS2166DPBF RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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