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参数资料
| 型号： | IRPLLNR3 |
| 厂商： | International Rectifier |
| 英文描述： | Universal Input Linear Fluorescent Ballast using the IR2167 |
| 中文描述： | 通用输入线性荧光灯镇流器用IR2167 |
| 文件页数： | 8/27页 |
| 文件大小： | 341K |
| 代理商： | IRPLLNR3 |
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IRPLLNR3
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Preheat Mode
When the ballast reaches the end of the UVLO mode, the Preheat mode is entered. At this point the
ballast control oscillator of the IR2167 has begun to operate and the half-bridge output is driving the
resonant load (lamp) circuit. The ballast control section oscillator of the IR2167 is similar to oscillators
found in many popular PWM voltage regulator ICs and consists of a timing capacitor and resistor
connected to ground. Resistors RT and RPH program a current which determines the ramp up time
of capacitor CT and resistor RDT determines the ramp down time. The downward ramping time of CT
is the dead time between the switching off of the LO (HO) and the switching on of the HO (LO) pins on
the IR2167. The Preheat mode frequency of oscillation is selected such that the voltage appearing
across the lamp is below the minimum lamp ignition voltage while supplying enough current to preheat
the lamp filaments to the correct emission temperature within the Preheat mode period. The preheat-
ing of the lamp filaments is performed with a constant voltage during the Preheat mode. The wave-
form in Figure 2 shows the lamp filament current while Figure 3 shows lamp filament voltage during
the normal Startup, Preheat and Ignition Ramp modes of the ballast.
Figure 1:
Top trace: Half-bridge output voltage
Middle trace: Bus Voltage
Bottom trace: VCC of the IR2167
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| IRPLMB1E | 功能描述:KIT DESIGN BALLAST 220VAC 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 |
| IR-POST-B | 制造商:Knoll Systems 功能描述:Single Target IR Repeater Kit with Black Postage Stamp Receiver 制造商:KNOLL SYSTEMS 功能描述:IR REPEATER COMPLETE KIT BLACK POSTAGE STAMP RECEIVER |
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