There is a need in many applications to sense currents on the high-side rail of a power bus and translate it into a voltage with respect to ground which is proportional to this current (see Figure 1).

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Although microcontrollers generally run at low voltages, such as 3.3 V, they often need to control loads running at higher voltages like 12 V. If switching the low side isn’t an option, the ...

As EDN's Design Ideas editor, I see a range of design submissions, from good, to not so good. A recent DI I turned down for several reasons included a high-side current sense circuit with ...