TPS2421-1
- Integrated Pass MOSFET
- Up to 20-V Bus Operation
- Programmable Fault Current
- Current Limit Proportionally Larger than Fault Current
- Programmable Fault Timer
- Internal MOSFET Power Limiting
- Latch-Off on Fault (TPS2421-1) and Retry (TPS2421-2) Versions
- SO-8 PowerPad™ Package
- –40°C to +125°C Junction Temperature Range
- UL2367 Recognized - File Number E169910
The TPS2421 device provides highly integrated hot swap power management and superior protection in applications where the load is powered by busses up to 20 V. The TPS2421 device is well suited to standard bus voltages as low as 3.3 V because of the maximum-UV turnon threshold of 2.9 V. These devices are very effective in systems where a voltage bus must be protected to prevent shorts from interrupting or damaging the unit. The TPS2421 device is an easy to use devices in an 8-pin PowerPad™ SO-8 package.
The TPS2421 device has multiple programmable protection features. Load protection is accomplished by a non-current limiting fault threshold, a hard current limit, and a fault timer. The current dual thresholds allow the system to draw short high current pulses, while the fault timer is running, without causing a voltage droop at the load. An example of this is a disk drive startup. This technique is ideal for loads that experience brief high demand, but benefit from protection levels in-line with their average current draw.
Hotswap MOSFET protection is provided by power limit circuitry which protects the internal MOSFET against SOA related failures.
The TPS2421 device is available in latch-off on fault (TPS2421-1) and retry on fault (TPS2421-2).
Similar products you might be interested in
Same functionality with different pin-out to the compared device
Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | TPS2421-x 5-A, 20-V Integrated FET Hot Swap datasheet (Rev. K) | PDF | HTML | 15 May 2019 |
Certificate | TPS2421-1 UL Certificate of Compliance IEC 60950-1 | 24 Apr 2020 | ||
Functional safety information | eFuse: Safety Certification and why it Matters | 18 Mar 2020 | ||
Selection guide | Power Management Guide 2018 (Rev. R) | 25 Jun 2018 | ||
Application note | Basics of eFuses (Rev. A) | 05 Apr 2018 | ||
User guide | TPS2420 Reference Design | 27 Mar 2009 | ||
User guide | Using the TPS2420, TPS2421-1, TPS2421-2 | 06 Jan 2009 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
TPS2421-1EVM-02 — TPS2421-1 Hot Swap Controller Evaluation Module
The TPS2421-1EVM-02 is a 3-V to 18-V module using the TPS2421-1 hot swap controller with integrated MOSFET. At power on, the output is power limited to control inrush current and protect the MOSFET. On an over-current condition, the controller interrupts power to the load at high speed and signals (...)
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.
-
parametric-filter eFuses & hot swap controllers
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
HSOIC (DDA) | 8 | Ultra Librarian |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
- Fab location
- Assembly location
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.