Texas Instruments TPS25985 0.59mΩ, 80A eFuse with Current Monitor is an integrated, high-current circuit protection/power management solution in a small 4.5mm x 5mm package with a 0.6mm pitch. The TPS25990 provides multiple protection modes using few external components and offers robust defense against overloads, short circuits, and excessive inrush current. An integrated fast and accurate sense analog load current monitor facilitates predictive maintenance and advanced dynamic platform power management techniques such as Intel PSYS and PROCHOT# to maximize system throughput and power supply utilization. Multiple TPS25985 devices can be connected in parallel to increase the total current capacity for high-power systems.
Features
4.5V to 16V input operating voltage range
20V absolute maximum
Withstands negative voltages up to –1V at the output
Integrated FET with low on-resistance of 0.59mΩ typical
Rated for 60ARMS current and 80A peak current
Supports parallel connection of multiple eFuses for higher current support, active device state synchronization / load sharing during start-up, and steady-state for unlimited scalability
Robust overcurrent protection
Adjustable overcurrent threshold (IOCP) of 10A to 60A with ±6% accuracy (maximum)
Circuit-breaker response during steady state operation with an adjustable transient blanking timer (ITIMER) to support peak currents up to 2 × IOCP
Adjustable active current limit during start-up (ILIM)
Robust short-circuit protection
Fast-trip response (<200ns) to output short-circuit events
Adjustable (2 × IOCP) and fixed thresholds
Immune to supply line transients, no nuisance tripping
Precise analog load current monitoring
±1.4% accuracy
>500kHz bandwidth
Fast overvoltage protection (fixed 16.6V threshold)
Adjustable output slew rate control (dVdt) for inrush current protection
Active high enable input with adjustable undervoltage lockout (UVLO)
Overtemperature Protection (OTP) to ensure FET SOA, assured FET SOA of 12W√s
Integrated FET health monitoring and reporting
Analog die temperature monitor output (TEMP)
Dedicated fault indication pin (FLT)
Power Good indication pin (PG)
Uncommitted general-purpose fast comparator
4.5mm x 5mm QFN package, 0.6mm pitch with 29-mil clearance between power and GND pins
-40°C to +125°C operating temperature range
Lead-free
Applications
Input hotswap and hotplug
Server and high-performance computing
Network interface cards
Graphics and hardware accelerator cards
Datacenter switches and routers
Fan trays
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