参数资料
| 型号： | IRPLHID2 |
| 厂商： | International Rectifier |
| 文件页数： | 12/30页 |
| 文件大小： | 0K |
| 描述： | KIT DESIGN BALLAST IRS2573D |
| 标准包装： | 1 |
| 系列： | * |
| 主要目的： | 照明，镇流器控制 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | * |
| 主要属性： | * |
| 次要属性： | * |
| 已供物品： | 板 |
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inductor charges up to a peak level, depending on the inductance value, and the
secondary winding output of the buck inductor is at some negative voltage level,
depending on the ratio between the primary and secondary windings. The secondary
winding output is measured by the ZX pin, which clamps the negative voltage to a diode
drop below COM using the internal ESD diode, and limits the resulting negative current
flowing out of the pin with an external resistor, RZX. When the voltage on the internal
on-time capacitor exceeds the voltage on the PCOMP pin or ICOMP pin, the on-time has
ended and the buck output turns off.
The secondary winding output of the buck inductor transitions to some positive voltage
level, depending on the ratio between the primary and secondary windings, and causes
the ZX pin to exceed the internal 2V threshold. The current in the buck inductor begins
to discharge into the lamp full-bridge output stage. When the inductor current reaches
zero, the ZX pin decreases back below the 2V threshold. This causes the internal logic
of the buck control to start the on-time cycle again. This mode of operation is known as
critical-conduction mode because the buck MOSFET is turned on each cycle when the
inductor current discharges to zero. The on-time is programmed by the voltage level on
the PCOMP pin, and the off-time is determined by the time it takes for the inductor
current to discharge to zero, as measured by a negative-going edge on the ZX pin. The
resulting shape of the current in the inductor is triangular with a peak value determined
by the inductance value and on-time setting.
Figure 5.6: Buck control timing diagram (critical conduction mode): CH1 is TOFF pin voltage, CH2 is
ZX pin voltage, CH3 is Buck output voltage and CH4 is current through buck inductor LBUCK
During lamp warm-up or a short-circuit condition at the output, the inductor current will
charge up to an excessive level that can saturate the inductor or damage the buck
MOSFET. To prevent this condition, the buck current sensing resistor (RBCS) is set
such that the voltage at the CS pin exceeds the internal over-current threshold (1.2V
typical) before the inductor saturates. Should the CS pin exceed 1.2V before the internal
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PDF描述 |
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| 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 |
| IRPLMB1E | KIT DESIGN BALLAST 220VAC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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: |
| IRPLLED7 | 功能描述:IC MOSFET DRIVER RoHS:否 类别:集成电路 (IC) >> PMIC - MOSFET，电桥驱动器 - 外部开关 系列:* 标准包装:95 系列:- 配置:半桥 输入类型:PWM 延迟时间:25ns 电流 - 峰:1.6A 配置数:1 输出数:2 高端电压 - 最大（自引导启动）:118V 电源电压:9 V ~ 14 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SOIC 包装:管件 产品目录页面:1282 (CN2011-ZH PDF) 其它名称:*LM5104M*LM5104M/NOPBLM5104M |
| IRPLLNR1 | 制造商:未知厂家 制造商全称:未知厂家 功能描述: |
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