The MOSFETs used are typically employed in high-frequency switch-mode power supplies. Aside from the power MOSFETs, the circuit uses only two comparators and a few inexpensive transistors, diodes ...

If we choose a low-side power MOSFET with an R DSON of 40 mΩ, then the comparator will be looking at a signal of 0.5 A/2 × 0.04 = 10 mV. For CMOS integrated-circuit comparators, offsets can easily be ...

Instead it turns the Mosfet on when its own intrinsic body diode becomes forward biased to 0.6V, and turns it off again when current through the Fet drops to zero – measured by sensing the voltage ...

The comparator detects this voltage and turns on the MOSFET through the driver when the secondary current conducts in the forward direction. Though conceptually simple, the current-transformer ...

Apart from minimizing the secondary reactive current loss in the MOSFET, this new technique further improves converter efficiency and reduces system cost by removing the need for a current sense ...

[Kerry Wong] had some extreme MOSFETs (IXTK90N25L2) and decided to create a high current electronic load. The result was a two-channel beast that can handle 50 A per channel. Together, they can sin… ...