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Hi team
My product needs to use current measurement in 54V/1A environment
I find the TI Designs as follow
40 V to 400 V Uni-directional Current/Voltage/Power Monitoring Reference Design
https://www.ti.com/lit/ug/tidu849/tidu849.pdf
I have some question:
1. What is the RSHUNT resistance value?
2. Is the wire link correct on high side?
3. Pls help to check the schematic diagram
Thank you
您好,
所附链接方案主要是为了实现高总线电源电压,即可以在高达400 V的总线电压下实现电流检测。而在您的应用中,最高总线电压是54V,TI有多个电流检测芯片可以应用在此总线电压下,如下芯片检索截图:
因此,如果您没有其他设计要求,那么就没必要按照所附链接方案设计您的方案,您可以考虑上述芯片方案直接实现。
VBUS不需要测量的话,可以将INA226 的VBUS管脚接地;
Alert 和I2C(SDA、SCL)都是OD接口,需要接上拉电阻到VS;
被测回路的连接应像下图这样连接: