TPS25985
4.5-V to 16-V, 0.59-mΩ, 80-A stackable compact eFuse with accurate and fast current monitor
TPS25985
- 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 low on-resistance: 0.59 mΩ (typ.)
- Rated for 60-A RMS current and 80-A peak current
- Supports parallel connection of multiple eFuses for higher current support
- Active device state synchronization and load sharing during start-up and steady-state for unlimited scalability
- Robust overcurrent protection
- Adjustable overcurrent threshold (IOCP): 10 A to 60 A with accuracy of ±6% (max.)
- Circuit-breaker response during steady state operation with 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 (< 200 ns) 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
- > 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
- Assured 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
- 100% Pb Free
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.
Multiple TPS25985x devices can be connected in parallel to increase the total current capacity for high power systems. All devices actively synchronize their operating state and share current during start-up as well as steady state to avoid over-stressing some of the devices which can result in premature or partial shutdown of the parallel chain.
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.
The devices are characterized for operation over a junction temperature range of –40°C to +125°C.
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Technical documentation
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TPS25985x 4.5 V – 16 V, 0.59-mΩ, 80-A Stackable eFuse with Accurate and Fast Current Monitor datasheet (Rev. A) | PDF | HTML | 29 Sep 2022 |
| Application note | Implementation of PSYS Monitor Using TPS25984, TPS25985, or TPS25990 eFuses | PDF | HTML | 15 Nov 2023 | |
| Technical article | Managing thermals: 3 ways to break through power-density barriers | PDF | HTML | 16 Oct 2022 | |
| Technical article | How a fully-stackable eFuse can help meet ever-increasing power needs of servers | PDF | HTML | 03 Oct 2022 | |
| EVM User's guide | TPS25985 evaluation module for eFuse User's Guide (Rev. A) | PDF | HTML | 29 Sep 2022 | |
| Certificate | TPS25985EVM EU RoHS Declaration of Conformity (DoC) (Rev. A) | 15 Sep 2022 | ||
| Application note | How eFuse Ensures Integrated FET Operation in Safe Operating Area | PDF | HTML | 07 Sep 2022 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
TPS25985EVM — TPS25985 evaluation module for 4.5-V to 16-V, 80-A, 0.59-mΩ eFuse
The TPS25985EVM eFuse evaluation board allows reference circuit evaluation of the TPS25985 eFuse. The TPS25985 device is a 4.5-V to 16-V, 80-A eFuse with integrated 0.59-mΩ FET with overcurrent, inrush current protection, adjustable overcurrent transient blanking timer, programmable undervoltage, (...)
TVS-RECOMMENDATION-CALC — TVS diode recommendation tool
Supported products & hardware
This design resource supports most products in these categories.
Check the product details page to verify support.
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parametric-filter eFuses & hot swap controllers
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
| Package | Pins | Download |
|---|---|---|
| VQFN-HR (RQP) | 26 | View options |
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