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| 型号： | IRPLCFL8U |
| 厂商： | International Rectifier |
| 文件页数： | 5/27页 |
| 文件大小： | 0K |
| 描述： | KIT DES FLUOR BALLAST IRS2530D |
| 标准包装： | 1 |
| 主要目的： | 照明，镇流器控制 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | IRS2530D |
| 主要属性： | 32W，调光，120 VAC |
| 次要属性： | 预热，自动预热，电压不足保护 |
| 已供物品： | 板，CD |
| 相关产品： | IRS2530DSPBF-ND - IC BALLAST CTRL DIM 600V 8-SOIC IRS2530DSTRPBFDKR-ND - IC DIMMING BALLAST CTRL 8-SOIC IRS2530DSTRPBFCT-ND - IC DIMMING BALLAST CTRL 8-SOIC IRS2530DSTRPBFTR-ND - IC DIMMING BALLAST CTRL 8-SOIC IRS2530DPBF-ND - IC CTRL BALLAST DIMMING 8-DIP |
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Ballast / Lamp Operating Characteristic
Lamp
Current
Ballast Running
Frequency
Figure 2.3: Lamp current against ballast frequency
To obtain 50% output, the frequency would have to be very precisely set. This is not
practical since the tolerances of the output inductor, capacitor and oscillator timing
components do not allow this. Even if each ballast was individually adjusted in
production variations in lamp behavior over temperature would mean that under some
conditions the lamp arc would extinguish at this setting leaving the system in
permanent preheat which would burn out the cathodes eventually.
This explains why the 150VDC bus solution has been adopted in some designs as this
allows 50% output to be achieved without this problem. However as discussed in the
previous section this approach is not without some major disadvantages.
IRPLCFL4 Reference Design
It is however necessary in order to create a reliable design to include a closed loop
feedback system that controls the lamp current by adjusting the ballast frequency from
a VCO (voltage controlled oscillator) driven by the output of an error amplifier that
senses the lamp arc current directly and compares it with a reference. This has been
used in the IRPLCFL4 reference design “A 3 Way Dimming CFL Ballast” and has been
demonstrated to be capable of controlling the lamp output down to approximately 10%
arc current maintaining stability. This also compensates for tolerances in the
components of the circuit or the lamp.
www.irf.com
RD0803
-5-
相关PDF资料 |
PDF描述 |
|---|---|
| IRPLDIM1U | BALLAST DIMMING 32W/T8 120VAC |
| IRPLDIM2E | KIT BALLAST DIM DIG 230VAC |
| IRPLDIM2U | BALLAST DIM DIG 32W/T8 120VAC |
| IRPLDIM3 | KIT DES FLUOR BALLAST IRS2158D |
| IRPLDIM4E | KIT DES BALLAST 26W IRS2530D |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IRPLCFL9U | 功能描述:电源管理IC开发工具 3 lvl Dim CFL Fluor Ballast Ref dsgn 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 |
| IRPLDIM1 | 制造商:IRF 制造商全称:International Rectifier 功能描述:Dimming Ballast Control IC Design Kit |
| IRPLDIM1E | 功能描述:KIT BALLAST DIMMING 230VAC 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 |
| IRPLDIM1U | 功能描述:BALLAST DIMMING 32W/T8 120VAC 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 |
| IRPLDIM2A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Digitally Addressable DALI Dimming Ballast Reference Design |
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