参数资料
| 型号： | IRPLHID2 |
| 厂商： | International Rectifier |
| 文件页数： | 13/30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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on-time capacitor reaches the voltage level on the PCOMP pin or ICOMP pin, the on-
time will end and the buck output will turn off. The off-time is determined by a negative-
going edge on the ZX pin, or, if the maximum off time is reached as programmed by the
time it takes for the CTOFF on the TOFF pin to charge up to an internal threshold of 2V.
If the maximum off-time is reached before the inductor current discharges to zero, then
the inductor will begin charging again from some value above zero. This mode of
operation is known as continuous-conduction mode and results in a continuous DC
current in the inductor with a ripple bounded above by the over-current threshold and
below by the maximum off time setting (see Figure 5.7). Continuous-conduction mode
also allows for a higher average current to flow through the buck inductor before
saturation occurs than with critical-conduction mode.
CS = 1.2V
Figure 5.7: Buck control timing diagram (continuous 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
5.6 Constant Power Control
During the general mode of operation and after the lamp has ignited, the IC regulates
the lamp output power to a constant level. To achieve this, the IC measures the lamp
voltage and lamp current at the VSENSE and ISENSE pins, multiplies the voltage and
current together using an internal multiplier circuit to calculate power, and regulates the
output of the multiplier circuit to a constant reference voltage by increasing or decreasing
the buck on-time. If the lamp power is too low then the output of the multiplier will be
below the internal reference voltage. The operational trans-conductance amplifier (OTA)
will output a sourcing current to the PCOMP pin that will charge up the CPCOMP to a
higher voltage. This will increase the on-time of buck and increase the output current to
the lamp for increasing the output power. If the lamp power is too high, then the
opposite will occur. The OTA will output a sinking current to the PCOMP pin that will
discharge the CPCOMP to a lower voltage. This will decrease the buck on-time and
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相关PDF资料 |
PDF描述 |
|---|---|
| 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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