参数资料
型号: AUIPS7111S
厂商: International Rectifier
文件页数: 7/15页
文件大小: 0K
描述: IC DVR CURRENT SENSE 1CH D2PAK-5
标准包装: 50
类型: 高端,电流感应
输入类型: 非反相
输出数: 1
导通状态电阻: 6 毫欧
电流 - 输出 / 通道: 10A
电流 - 峰值输出: 45A
电源电压: 5.5 V ~ 6.8 V
工作温度: -40°C ~ 150°C
安装类型: 表面贴装
封装/外壳: TO-263-5,D²Pak(4 引线+接片),TO-263BB
供应商设备封装: D²PAK
包装: 管件
AUIPS7111S
Input level VIH/VIL
The input level are referenced to Vcc. When Vcc-Vin exceed VIH the part turns on and when Vcc-Vin goes below VIL the
part turns off
Current sensing accuracy
Ifb
Ifb2
Ifb1
Ifb leakage
I offset
Iout1
Iout2
Iout
The current sensing is specified by measuring 3 points :
- Ifb1 for Iout1
- Ifb2 for Iout2
- Ifb leakage for Iout=0
The parameters in the datasheet are computed with the following formula :
Ratio = ( Iout2 – Iout1 )/( Ifb2 – Ifb1)
I offset = Ifb1 x Ratio – Iout1
This allows the designer to evaluate the Ifb for any Iout value using :
Ifb = ( Iout + I offset ) / Ratio if Ifb > Ifb leakage
For some applications, a calibration is required. In that case, the accuracy of the system will depends on the variation of
the I offset and the ratio over the temperature range. The ratio variation is given by Ratio_TC specified in page 4.
The Ioffset variation depends directly of the Rdson :
I offset@-40°C= I offset@25°C / 0.7
I offset@150°C= I offset@25°C / 1.9
Over-current protection
The threshold of the over-current protection is set in order to guaranteed that the device is able to turn on a load with an
inrush current lower than the minimum of Isd. Nevertheless for high current and high temperature the device may switch
off for a lower current due to the over-temperature protection (see Figure 10).
www.irf.com
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