参数资料
| 型号： | IRPLCFL4 |
| 厂商： | International Rectifier |
| 文件页数： | 9/12页 |
| 文件大小： | 0K |
| 描述： | IC BALLAST DIMMING CFL 3-WAY |
| 标准包装： | 1 |
| 主要目的： | 照明，镇流器控制 |
| 已用 IC / 零件： | IR2156 |
| 已供物品： | 板，文档 |
| 相关产品： | IR2156SPBFDKR-ND - IC CONTROLLR BALLAST 600V 14SOIC IR2156SPBF-ND - IC CTRLR BALLAST 600V .5A 14SOIC IR2156SPBFCT-ND - IC CONTROLLR BALLAST 600V 14SOIC IR2156SPBFTR-ND - IC CONTROLLR BALLAST 600V 14SOIC IR2156PBF-ND - IC CONTROLLER BALLAST 600V 14DIP IR2156STR-ND - IC BALLAST CONT 600V .5A 14-SOIC IR2156-ND - IC CNTL BALLAST 600V 0.5A 14-DIP IR2156S-ND - IC CNTL BALLAST 600V 0.5A 14SOIC |
| 其它名称： | *IRPLCFL4 |
IRPLCFL4
Component Selection
The output inductor and capacitor values should be chosen for the ballast to allow it to run at maxi-
mum brightness around 40-45kHz. This will minimize losses in the inductor. For this example the IR
Ballast Designer software * has been used to select the required preheat, ignition and run frequen-
cies for a 25W spiral CFL lamp giving an L3 of 2.2mH and C of 4.7nF.
The values of R16, R17 and C9 have been calculated to give a preheat frequency of 65kHz and a run
frequency of 40kHz. The ignition frequency will be around 58kHz.
Output Inductor Design
The output inductor L3 should be designed to allow a high peak ignition current without saturating.
This is important as the IR2156 shutdown will be triggered if the inductor saturates. The ignition
current depends on the type of lamp being used and must be kept to a minimum by ensuring the
preheat is correct. To minimize losses in the inductor multi-stranded wire should be used in combina-
tion with Ferrite cores of sufficiently good quality. The best approach to design is to wind as many
turns as possible of multi-stranded wire and have the largest gap possible to achieve the correct
inductance. This will produce the highest available peak current before saturating the inductor. It is
important to bear in mind that when the cores are hot the saturation point and hence the peak current
for the inductor will be lower therefore a poorly designed inductor may result in the ballast shutting
down during an attempted hot re-strike.
The inductor design process can be greatly simplified by using the Ballast Designer software pro-
duced by I.R. For this application it is recommended to fix the core size to EF20.
Lamp Preheating
The lamp must be sufficiently preheated before ignition. The correct preheat current can be deter-
mined from published data or from International Rectifiers Ballast Designer software.
The preheat time can be set by adjusting the value of C10. As a general rule the lamp filament should
glow red before ignition. If preheat is insufficient the ballast is likely to shutdown during ignition
because the output inductor will be unable to operate at the high current required. The number of
turns in the auxiliary cathode windings of the output inductor L2 should be chosen to provide suffi-
cient preheat. In designs for ballasts with integral lamps the shutdown pin can be grounded so that the
inductor may saturate without shutting down the circuit.
www.irf.com
9
相关PDF资料 |
PDF描述 |
|---|---|
| IRPLCFL5E | KIT DESIGN CFL BALLAST 220VAC |
| IRPLCFL5U | KIT DESIGN CFL BALLAST 120VAC |
| IRPLCFL8U | KIT DES FLUOR BALLAST IRS2530D |
| IRPLDIM1U | BALLAST DIMMING 32W/T8 120VAC |
| IRPLDIM2E | KIT BALLAST DIM DIG 230VAC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IRPLCFL5E | 功能描述:KIT DESIGN CFL 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 |
| IRPLCFL5U | 功能描述:KIT DESIGN CFL BALLAST 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 |
| IRPLCFL7U | 制造商:International Rectifier 功能描述:9999V 999.000A OTHER - Boxed Product (Development Kits) |
| IRPLCFL8U | 功能描述:电源管理IC开发工具 3 lvl Dim CFL Fluor Ballast w/IRS2530D 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 |
| 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 |
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