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参数资料
| 型号： | IRPLCFL8U |
| 厂商： | International Rectifier |
| 文件页数： | 21/27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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Lamp Preheating
The lamp must be sufficiently preheated before ignition. The correct preheat current
can be determined from published data or from International Rectifiers Ballast Designer
software.
The preheat time can be set by adjusting the value of CPH. 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 LRES should be chosen to provide sufficient 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.
The lamp filament (Cathode) resistance over the range of dimming levels should be
between 3 and 5.5 times the resistance when cold. A simple method for determining
the hot resistance is to first connect one cathode to a DC power supply via an ammeter
and slowly increase the voltage from zero, noting the current at 1V intervals. This
should be done until the cathode can be seen to be glowing red. When this occurs the
voltage should not be increased further in order to prevent possible cathode damage.
The resistance can then be calculated for each voltage and hence the acceptable
voltage range can be found to comply with the 3 to 5.5 times cold resistance, which can
be easily measured with a digital multi-meter (DMM).
Then when the ballast is being run a true RMS digital voltmeter can be connected
across one cathode and the voltage can be observed at maximum and minimum
brightness. The cathode voltage increases as the ballast is dimmed. The values of
CH1 and CH2 will control how much it increases by, reducing the capacitance will
reduce the amount by which the voltage rises. The values should be chosen to prevent
the voltage exceeding the upper limit at minimum output.
It is important to consider that using additional windings on the inductor to provide
cathode heating means that power is now being transferred through the core and
consequently the core losses will increase and hence the core operating temperature.
The core will reach its highest operating temperature when the ballast is running at
minimum brightness.
www.irf.com
RD0803
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相关代理商/技术参数 |
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| 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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