SLVSGG3A May 2022 – September 2022 TPS25985
PRODUCTION DATA
This design example considers a 12-V system operating voltage with a tolerance of ±10%. The maximum steady-state load current is 300 A. If the load current exceeds 330 A, the eFuse circuit must allow transient overload currents up to a 16-ms interval. For persistent overloads lasting longer than that, the eFuse circuit must break the circuit and then latch-off. The eFuse circuit must charge a bulk capacitance of 55 mF and support approximately 12% of the steady-state load during start-up. Figure 9-3 shows the application schematic for this design example.