Calculation tool
TPS25940-Q1
2.7-V to 18-V, 42mΩ, 0.6-5.3A automotive eFuse with current monitor and short to battery protection
Data sheet
TPS25940-Q1
- Qualified for automotive applications
- AEC-Q100 qualified with the following results:
- Device temperature grade 1: –40°C to +125°C ambient operating temperature range
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C5
- 2.7-V to 18-V operating voltage, 20 V (maximum)
- Total RON: 42 mΩ (typical)
- 0.6-A to 5.3-A adjustable current limit (±8%)
- IMON Current indicator output
- ±8% accuracy for TPS25940-Q1/TPS25940L-Q1
- Adjustable under-, overvoltage threshold (±2%)
- Reverse current blocking
- 1-µs reverse voltage shutoff
- Programmable dVo/dt control
- Power good and fault outputs
- Short-to-battery protection
- Short-to-ground protection
- TPS25940-Q1/TPS259401A-Q1: auto-retry
- TPS25940L-Q1: latch-off
The TPS25940xx-Q1 eFuse Power Switches are compact, feature rich power management devices with a full suite of protection functions. The wide operating range allows control of many popular DC bus voltages. Integrated back-to-back FETs provide bidirectional current control making the device well suited for systems with load side holdup energy that must not drain back to a failed supply bus.
Load, source and device protection are provided with many programmable features including overcurrent, dVo/dt ramp and overvoltage, undervoltage thresholds. For system status monitoring and downstream load control, the device provides PGOOD, FLT and precise current monitor output. Precise programmable undervoltage, overvoltage thresholds and mode simplify power management design.
The TPS25940xx-Q1 monitor V(IN) and V(OUT) to provide true reverse current blocking when V(IN) < (V(OUT) – 66 mV). This function supports supply bus protection from over-voltages during output short to battery faults.
Technical documentation
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View all 7 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TPS25940xx-Q1 2.7-V to 18-V eFuse with Integrated Short-to-Battery Protection datasheet (Rev. E) | PDF | HTML | 29 Jan 2021 |
| Functional safety information | eFuse: Safety Certification and why it Matters | 18 Mar 2020 | ||
| E-book | 11 Ways to Protect Your Power Path | 03 Jul 2019 | ||
| EVM User's guide | TPS25940 Evaluation Module User's Guide (Rev. B) | 09 Jul 2018 | ||
| Application note | Basics of eFuses (Rev. A) | 05 Apr 2018 | ||
| Application note | Charging Super Capacitor With eFuse | 08 Aug 2017 | ||
| Application note | Power Multiplexing Using Load Switches and eFuses (Rev. A) | 20 Jun 2017 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
TPS25940EVM-635 — TPS25940x Evaluation Module
The TPS25940XEVM-635 is an eFuse (Current Limiter with DEVSLP) that operates from 2.7V to 18V, and have integrated back-to-back FETs with programmable under-voltage, over-voltage, reverse-voltage, over-current and in-rush current protection. It also includes analog current monitoring in a small (...)
User guide: PDF
Simulation model
TPS25940-Q1 Unencrypted PSpice Transient Model Package (Rev. B)
SLVMBN6B.ZIP (78 KB) - PSpice Model
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Check the product details page to verify support.
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| Package | Pins | Download |
|---|---|---|
| WQFN (RVC) | 20 | View options |
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