Calculation tool
TPS25948-CALC — TPS25948 design calculator
The design calculator allows customer to size the external peripheral components while designing with TPS25948 eFuse
Data sheet
TPS25948
- Wide operating input voltage range: 3.5V to 23V
- 28V absolute maximum
- Can be powered from either IN or OUT
- Integrated back-to-back FETs with low ON-resistance: RON = 12.2mΩ (typ)
- Ideal diode operation with true reverse current blocking (RCB)
- External pin control (RCBCTRL) to disable RCB and allow bi-directional power delivery in steady-state to support USB OTG or DRP operation
- Fast overvoltage protection
- Adjustable overvoltage lockout (OVLO) with 1µs (typ) response time
- Overcurrent protection with load current monitor output (ILM)
- Active current limit response
- Adjustable threshold (ILIM) 1A–9A
- ±10% accuracy (max) for ILIM > 3A
- Adjustable transient blanking timer (ITIMER) to allow peak currents > ILIM
- Output load current monitor accuracy: ±6% (typ) (IOUT ≥ 3A)
- Fast-trip response for short-circuit protection
- < 1µs (typ) response time
- Adjustable and fixed thresholds
- Active high enable input with adjustable undervoltage lockout threshold (UVLO)
- Adjustable output slew rate control (dVdt)
- Overtemperature protection
- Digital outputs: Supply Good (SPLYGD/SPLYGD) and Fault Indication (FLT)
- UL 2367 recognition (planned)
- IEC 62368-1 CB certification (planned)
- IEC 61000-4-5: 28V on IN
- Small footprint: PowerWCSP 2.4mm × 1.7mm, 0.5mm pitch
The TPS25948xx family of eFuses is a highly integrated, circuit-protection and power-management solution in a small package. The devices provide multiple protection modes that use few external components and are a robust defense against overloads, short-circuits, voltage surges and excessive inrush current. With integrated back-to-back FETs, reverse current flow from output to input is blocked at all times, making the devices well suited for power MUX and ORing applications, as well as systems that need load side energy hold up storage if input power supply fails. The devices use a linear ORing based scheme to ensure almost zero DC reverse current and emulate ideal diode behavior with minimum forward voltage drop and power dissipation. The devices also provide an external pin control option to disable the reverse current blocking and allow bi-directional power delivery in steady-state.
Output slew rate and inrush current can be adjusted using a single external capacitor. Loads are protected from input overvoltage conditions by cutting off the output if input exceeds an adjustable overvoltage threshold. The devices respond to output overload by actively limiting the current. The output current limit threshold as well as the transient overcurrent blanking timer are user adjustable. The current limit control pin also functions as an analog load current monitor.
The devices are available in a 2.4mm × 1.7mm, 12-ball power wafer chip scale package (PowerWCSP) for improved thermal performance and reduced system footprint.
The devices are characterized for operation over a junction temperature range of –40°C to +125°C.
Technical documentation
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View all 3 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TPS25948xx 3.5V–23V, 12.2mΩ, 8A eFuse With Bi-directional Power Delivery datasheet (Rev. B) | PDF | HTML | 14 Jun 2024 |
| EVM User's guide | TPS25948EVM: Evaluation Module for TPS25948 eFuse (Rev. A) | PDF | HTML | 07 Jul 2023 | |
| Certificate | TPS25948EVM EU RoHS Declaration of Conformity (DoC) | 20 Sep 2022 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
TPS25948EVM — TPS25948 evaluation module for 3.5-V to 23-V, 8-A, 12-mΩ eFuse
The TPS25948 evaluation module allows reference circuit evaluation of the TPS25948 eFuse. The TPS25948 device is a 3.5-V to 23-V, 8-A eFuse with integrated 12-mΩ FET with reverse current protection, inrush current protection, programmable under voltage, over voltage protection and current limiting.
Calculation tool
TVS-RECOMMENDATION-CALC — TVS diode recommendation tool
This tool suggests suitable TVS for given system parameters and abs max voltage rating of the device.
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
Simulation tool
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| POWERWCSP (YWP) | 12 | Ultra Librarian |
Ordering & quality
Information included:
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Information included:
- Fab location
- Assembly location
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Support & training
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