参数资料
| 型号： | IRPLHALO1E |
| 厂商： | International Rectifier |
| 文件页数： | 3/17页 |
| 文件大小： | 0K |
| 描述： | KIT HALOGIN CONVERTER 100VA |
| 标准包装： | 1 |
| 主要目的： | 照明，镇流器控制 |
| 已用 IC / 零件： | IR2161 |
| 已供物品： | 板，文档 |
| 相关产品： | IR2161STRPBF-ND - IC HALOGEN CONVERTER CTLR 8-SOIC IR2161PBF-ND - IC HALOGEN CONVERTER CTLR 8-DIP IR2161SPBF-ND - IC HALOGEN CONV CTRL 8-SOIC |
| 其它名称： | *IRPLHALO1E |
IRPLHALO1E
The IR2161 provides low and high side output drives for the half-bridge MOSFETs or IGBTs. The
output from the half bridge is connected to a high frequency stepdown transformer, which supplies
approximately 12Vrms at the output to drive the lamps. The IR2161 also incorporates all of the
protection features needed in the system without the need for very many external components.
At switch on the frequency sweeps from a high frequency around 125kHz down to the normal
operating frequency 30 to 40kHz over a period of approximately 1 second. Because of the leakage
inductance in the transformer this causes the output voltage at the lamp to start at a reduced value
and gradually increase to the 12V nominal level. This reduces the inrush current at switch on. When
the lamp is cold the filament resistance is lower which tends to cause high inrush currents that can
cause false tripping of the shutdown circuit.
The IC includes a short circuit protection that operates if a high current is detected for approximately
50mS causing the outputs to switch off. Similarly if an >50% overload is detected for more than
approximately 500mS then the outputs will switch off. It should be noted that the shutdown time
under an overload condition will be reduced depending on the magnitude of the overload.
This dual mode shutdown circuit will protect the circuit from all output fault conditions and will
function when the convertor is dimmed, unlike the self-oscillating solution and it will also protect the
system from a short circuit at the end of the output leads.
An electronic transformer is normally required to provide a reasonably consistent output voltage
over a range of loads and so the IC senses the load through the current sense resistor and in-
creases the frequency as the load is reduced thus providing compensation for the output trans-
former load regulation. There is also some modulation of the frequency through the line voltage
half-cycle to spread the harmonics and reduce the size and cost of the EMC filtering components
required.
The IR2161 includes all necessary protection features and also allows the convertor to be dimmed
externally with a standard phase cut dimmer for leading or trailing edge. This IC provides the advan-
tage of longer lamp life due to soft start and output voltage shift (load regulation) compensation. It
causes the convertor to run with optimized harmonic behavior (i.e. almost unity power factor) also
at higher loads (solution with bipolar devices can have harmonics problems for high loads due to
the fact that the oscillator start-stop every half cycle, causing cross over distortion).
The IC also includes adaptive dead time to realize soft-switching and allow cool running MOSFETs
(and improves the EMI behavior due to frequency modulation during the line voltage half cycle).
Some points to consider when comparing a Halogen convertor circuit design with an electronic ballast
for fluorescent lamps:
www.irf.com
3
相关PDF资料 |
PDF描述 |
|---|---|
| IRPLHID2 | KIT DESIGN BALLAST IRS2573D |
| IRPLLNR2U | BALLAST 32W/T8 120V AC IR21571 |
| IRPLLNR4 | BALLAST UNIV INP FLUOR IR2166 |
| IRPLLNR5 | KIT BALLAST UNIV FLUOR 54W TL5 |
| IRPLLNR7 | KIT UNIV ELEC BALLAST FLUOR LAMP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IRPLHID1U | 制造商:International Rectifier 功能描述:600V .500A OTHER - Boxed Product (Development Kits) |
| IRPLHID2 | 功能描述:电源管理IC开发工具 HID Ballast for 70W Lamp Using IRS2573D 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 |
| IRPLLED1 | 功能描述:BOARD EVALUATION FOR IRS2540PBF RoHS:是 类别:编程器，开发系统 >> 评估板 - LED 驱动器 系列:- 标准包装:1 系列:PowerWise® 电流 - 输出 / 通道:20mA 输出及类型:1，非隔离 输出电压:17V 特点:可调光 输入电压:2.7 ~ 5.5 V 已供物品:板 已用 IC / 零件:LM3508 相关产品:LM3508TLX-ND - IC LED DRVR WHT BCKLGT 9USMDLM3508TLDKR-ND - IC LED DRVR WHT BCKLGT 9MICROSMDLM3508TLCT-ND - IC LED DRVR WHT BCKLGT 9MICROSMDLM3508TLTR-ND - IC LED DRVR WHT BCKLGT 9MICROSMD |
| IRPLLED1A | 功能描述:电源管理IC开发工具 Hi-Vlt DC-DC Buck Cnvr HBLED Cur Cntrl 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 |
| IRPLLED5 | 制造商:International Rectifier 功能描述: |
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