iscmos
Junior Member level 1
Anyone here did dc-dc converter, since I want to know how to choose current sense resistor? This resistor series with MOSFET which is paralleled to PowerMOSFET. One thing is we need to make it small to get a accurate current ratio, but on the other hand, small resistor leads to small voltage, which also means a low offset current sense amplifier will be required. So how to make a tradeoff between them. Thanks