1 Features
• Input operating voltage range: 4.5 V to 16 V
– 20-V absolute maximum
– Withstands negative voltages up to –1 V at
output
• Integrated FET with ultra-low on-resistance: 0.59
mΩ (typ.)
• Rated for continuous current of 55 A and peak
current of 70 A
• Supports parallel connection of multiple eFuses for
higher current support
– Active device state synchronization and load
sharing during start-up and steady-state
• Robust overcurrent protection
– Adjustable overcurrent threshold (IOCP): 10 A to
60 A with accuracy of ±5%
– Circuit-breaker response during steady state
operation with adjustable transient overcurrent
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 (200 ns) to output shortcircuit
events
– Adjustable threshold (2 × IOCP)
– Immune to supply line transients — no
nuisance tripping
• Precise load current monitoring
– < 2.1% error over 50%–100% of maximum
current
– > 500-kHz bandwidth
• Fast overvoltage protection (fixed 16.6-V
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
– Guaranteed FET SOA: 12 W√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
• Small footprint: QFN 4.5-mm × 5-mm, 0.6-mm
pitch
– 29-mil clearance between power and GND pins
2 Applications
• Input hotswap and hotplug
• Server and High performance computing
• Network interface cards
• Graphics and Hardware accelerator cards
• Datacenter switches and Routers
• Fan trays
3 Description
The TPS25985x is an integrated, high-current circuit
protection and power management solution in a small
package. The device provides multiple protection
modes using very few external components and is a
robust defense against overloads, short-circuits, and
excessive inrush current.
Applications with particular inrush current
requirements can set the output slew rate with a
single external capacitor. Output current limit level
can be set by user as per system needs. A user
adjustable overcurrent blanking timer allows systems
to support transient peaks in the load current without
tripping the eFuse.