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| 型号： | IRS21571DSTRPBF |
| 厂商： | International Rectifier |
| 文件页数： | 15/28页 |
| 文件大小： | 0K |
| 描述： | IC BALLAST CONTROL 600V 16SOIC |
| 标准包装： | 2,500 |
| 类型： | 镇流器控制器 |
| 频率： | 43.7 ~ 48.3 kHz |
| 电流 - 电源： | 10mA |
| 电流 - 输出： | 180mA |
| 电源电压： | 11.5 V ~ 15.6 V |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 带卷 (TR) |
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IRS21571D
These connection techniques prevent high current ground loops from interfering with sensitive timing component
operation, and allows the entire control circuit to reject common-mode noise due to output switching.
The Control Sequence and Timing Component Selection
The IRS21571D uses the following control sequence (Figure 3) to drive rapid start fluorescent lamps.
f Start
f PH
f Run
f min
t
5V
V CPH
2V
V RPH
2V
V RUN
Preheat mode
Ignition Run mode
Ramp
mode
Figure 3: IRS21571D Control sequence
The control sequence used in the IRS21571D allows the Run Mode operating frequency of the ballast to be
higher than the ignition frequency (i.e., f start > f ph > f run > f ign ). This control sequence is recommended for lamp
types where the ignition frequency is too close to the run frequency to ensure proper lamp striking for all
production resonant LC component tolerances (please note that it is possible to use the IRS21571D in systems
where f start > f ph > f ign > f run , simply by leaving the RUN pin open).
Six pins in the IC are used to control the Startup, Preheat, Ignition Ramp, and Run modes of operation, and to
allow ballast and lamp engineers the flexibility to optimize their designs for virtually any lamp type.
The heart of this controller is an oscillator which resembles those found in many popular PWM voltage regulator
ICs. In its simplest form, this oscillator consists of a timing resistor and capacitor connected to ground. The
voltage across the timing capacitor C T is a sawtooth, where the rising portion of the ramp is determined by the
current in the R T pin, and the falling portion of the ramp is determined by an external deadtime resistor R DT . The
oscillograph in Figure 4 illustrates the relationship between the oscillator capacitor waveform and the gate driver
outputs.
www.irf.com
15
? 2008 International Rectifier
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IRS2158D | 制造商:IRF 制造商全称:International Rectifier 功能描述:Ballast control and half-bridge driver in one IC |
| IRS2158DPBF | 功能描述:功率驱动器IC Ballast Contrl IC 600V fully intgrtd RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| IRS2158DS | 制造商:IRF 制造商全称:International Rectifier 功能描述:Ballast control and half-bridge driver in one IC |
| IRS2158DSPBF | 功能描述:功率驱动器IC 3-Phase Bridge DRVR 600V 180mA 250uA RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| IRS2158DSTRPBF | 功能描述:功率驱动器IC Ballast Contrl IC 600V fully intgrtd RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
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