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TPS2421-2

AKTIV

3 V bis 20 V, 33 mΩ, 1,8–5,5 A-eFuse mit thermischer Abschaltung

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Datenblatt

TPS2421-2

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

Vabsmax_cont (V) 25 Vin (max) (V) 20 Vin (min) (V) 3 Current limit (max) (A) 5.5 Current limit (min) (A) 1.8 Features Adjustable current limit, Fault output, Overcurrent protection, Power good signal, Thermal shutdown UL recognition UL2367 Overcurrent response Current limiting, Power limiting Fault response Auto-retry Ron (typ) (mΩ) 33 Rating Catalog Soft start Adjustable Quiescent current (Iq) (typ) (A) 0.0039 Quiescent current (Iq) (max) (A) 0.005 Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 125
Vabsmax_cont (V) 25 Vin (max) (V) 20 Vin (min) (V) 3 Current limit (max) (A) 5.5 Current limit (min) (A) 1.8 Features Adjustable current limit, Fault output, Overcurrent protection, Power good signal, Thermal shutdown UL recognition UL2367 Overcurrent response Current limiting, Power limiting Fault response Auto-retry Ron (typ) (mΩ) 33 Rating Catalog Soft start Adjustable Quiescent current (Iq) (typ) (A) 0.0039 Quiescent current (Iq) (max) (A) 0.005 Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 125
HSOIC (DDA) 8 29.4 mm² (4.9 mm × 6 mm)
  • 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
  • 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).

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).
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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt TPS2421-x 5-A, 20-V Integrated FET Hot Swap datasheet (Rev. K) PDF | HTML 15.05.2019
Zertifikat TPS2421-2 UL Certificate of Compliance IEC 60950-1 24.04.2020
Informationen zur funktionalen Sicherheit eFuse: Safety Certification and why it Matters 18.03.2020
E-book 11 Ways to Protect Your Power Path 03.07.2019
Auswahlhilfe Power Management Guide 2018 (Rev. R) 25.06.2018
Anwendungshinweis Basics of eFuses (Rev. A) 05.04.2018
Anwendungshinweis Power Multiplexing Using Load Switches and eFuses (Rev. A) 20.06.2017
Benutzerhandbuch TPS2420 Reference Design 27.03.2009

Design und Entwicklung

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Evaluierungsplatine

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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 (...)

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