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| 型号： | IRS2573DSPBF |
| 厂商： | International Rectifier |
| 文件页数： | 18/28页 |
| 文件大小： | 0K |
| 描述： | IC BALLAST CNTRLLER 600V 28-SOIC |
| 标准包装： | 25 |
| 类型： | HID 灯控制器 |
| 频率： | 160 ~ 240 Hz |
| 电流 - 电源： | 10mA |
| 电流 - 输出： | 180mA |
| 电源电压： | 9.5 V ~ 16.6 V |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 28-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 28-SOIC W |
| 包装： | 管件 |
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IRS2573D
Full-Bridge Control
The IC includes a complete high and low-side full-bridge driver necessary for driving the HID lamp with an AC
square-wave voltage. The full-bridge begins oscillating at the programmed frequency immediately when the IC
comes out of UVLO Mode and turns on. The full-bridge is typically driven at a low frequency to prevent acoustic
resonances from damaging the lamp. The full-bridge frequency is programmed with the external capacitor at the
CT pin. CT charges up and down linearly through internal sink and source currents between a fixed voltage
window of 2V and 4V. CT reaching 4V initiates the toggling of LO1/HO1, and LO2/HO2 respectively (see Figure 6).
The dead-time is fixed internally at 1.0us typical. During the dead-time, all full-bridge MOSFETs are off and the
mid-points of each half-bridge are floating or unbiased.
Should an external transient occur during the dead-time
due to an ignition voltage pulse, each half-bridge mid-point (VS1 and VS2 pins) can slew high or low very quickly
and exceed the dv/dt rating of the IC. To prevent this, internal logic guarantees that the IGN pin is set to a logic
‘low’ during the dead-time. No ignition pulses can occur until the dead-time has ended and the appropriate full-
bridge MOSFETs are turned on. This will guarantee that the mid-points are biased to the output voltage of the
buck or COM before an ignition pulse occurs. The full-bridge stops oscillating only when the IC enters Fault
Mode or UVLO Mode.
4V
CT
2V
LO1, HO2
LO2, HO1
Dead-time
Dead-time
VS1
VS2
VLAMP
0V
Figure 6, Full-bridge Timing Diagram
Buck Control
The buck control circuit operates in critical-conduction mode or continuous-conduction mode depending on the
off-time of the buck output or the peak current flowing through the buck MOSFET. During normal lamp running
conditions, the voltage across the buck current sensing resistor, as measured by the CS pin, is below the internal
over-current threshold (1.2V typical). The buck on-time is defined by the time it takes for the internal on-time
capacitor to charge up to the voltage level on the PCOMP pin or ICOMP pin, whichever is lower. During the on-
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18
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相关PDF资料 |
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| IRS27952SPBF | IC DRIVER HALF-BRIDGE 8SOIC |
| IRSF3010S | IC FET SMART SW 50V 11A D2PAK |
| IRSF3011LTR | IC DRIVER LO SIDE 50V 5A SOT-223 |
| IRSF3021LTR | IC DRIVER LO SIDE 50V 3A SOT-223 |
| IRSF3031LTR | IC DRVR LO SIDE 50V 1.8A SOT-223 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IRS2573DSTRPBF | 功能描述:功率驱动器IC Buck & Full-Brdg HID ballast Cntrl IC 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 |
| IRS25801DSTRPBF | 制造商:International Rectifier 功能描述:600V 999.000A SOIC - Tape and Reel 制造商:International Rectifier 功能描述:IC POWER FACTOR CORRECT PFC |
| IRS25803DSPBF | 制造商:International Rectifier 功能描述:CIC SOIC-8N - Tape and Reel 制造商:International Rectifier 功能描述:SEMICONDUCTOR OTHER 制造商:International Rectifier 功能描述:Fluorescent PFC 305VAC SOIC |
| IRS25803DSTRPBF | 制造商:International Rectifier 功能描述:CIC SOIC-8N - Tape and Reel 制造商:International Rectifier 功能描述:SEMICONDUCTOR OTHER 制造商:International Rectifier 功能描述:Fluorescent PFC 305VAC SOIC |
| IRS2580DSPBF | 功能描述:功率驱动器IC COMPBO8 PFC HALF-BRDG BALLAST IC 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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