OOPS: Overcurrent Overvoltage Protection System
April 2026
Designed a discrete analog overcurrent and overvoltage protection circuit which will be deployed across roughly 10 boards on Berkeley FSAE's 24V/400W low-voltage rail. Each board carries its own latching protection, isolating faults to the offending node instead of tripping the whole bus. The signal chain pairs an INA241 current-sense amplifier and LM2903-Q1 comparator for fast OC detection with a TLV9022L-Q1 acting as the latching SR element that holds the fault state until reset. Trip signals from any monitor wire-OR onto the IN pin of an IRS10752PbF gate driver via open-drain outputs, which then turns off a BUK7Y3R1-80MX low-side MOSFET to disconnect the load. RC blanking on each comparator filters inrush transients while keeping the response time below a microsecond on real faults. I also designed an evaluation PCB in Altium with hierarchical sheets to benchmark three approaches side by side: the LM5069 hot-swap controller, the LM74930-Q1 ideal-diode, and the discrete latching circuit above. Team: Formula Electric @ Berkeley