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eFuses (integrierte Hot-Swaps)

TPS25947

AKTIV

eFuse mit integriertem Verpolungsschutz, 2,7 V bis 23 V, 28 mΩ, 5,5 A

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TPS25947

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

Vabsmax_cont (V) 28 Vin (max) (V) 23 Vin (min) (V) 2.7 Current limit (max) (A) 6 Current limit (min) (A) 0.5 Features Adjustable soft start, Current monitoring, Fault output, Overcurrent protection, Overvoltage protection, Power good signal, Reverse current blocking always, Reverse polarity protection, Short-circuit protection, Thermal shutdown UL recognition IEC62368, UL2367 Overcurrent response Circuit breaker, Current limiting Fault response Auto-retry, Latch-off Ron (typ) (mΩ) 28.3 Overvoltage response Clamp, Cut-off Rating Catalog Soft start Adjustable Quiescent current (Iq) (typ) (A) 0.000426 Quiescent current (Iq) (max) (A) 0.00061 Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 125
Vabsmax_cont (V) 28 Vin (max) (V) 23 Vin (min) (V) 2.7 Current limit (max) (A) 6 Current limit (min) (A) 0.5 Features Adjustable soft start, Current monitoring, Fault output, Overcurrent protection, Overvoltage protection, Power good signal, Reverse current blocking always, Reverse polarity protection, Short-circuit protection, Thermal shutdown UL recognition IEC62368, UL2367 Overcurrent response Circuit breaker, Current limiting Fault response Auto-retry, Latch-off Ron (typ) (mΩ) 28.3 Overvoltage response Clamp, Cut-off Rating Catalog Soft start Adjustable Quiescent current (Iq) (typ) (A) 0.000426 Quiescent current (Iq) (max) (A) 0.00061 Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 125
VQFN-HR (RPW) 10 4 mm² (2 mm × 2 mm)
  • Wide operating input voltage range: 2.7V to 23V
    • 28V absolute maximum
    • Withstands negative voltages up to –15V
  • Integrated back-to-back FETs with low on-resistance: RON = 28.3mΩ (typical)
  • Ideal diode operation with true reverse-current blocking
  • Fast overvoltage protection
    • Overvoltage clamp (OVC) with pin-selectable threshold (3.8V, 5.7V, 13.8V) and 5µs (typical) response time OR
    • Adjustable overvoltage lockout (OVLO) with 1.2µs (typical) response time
  • Overcurrent protection with load current monitor output (ILM)
    • Active current limit OR circuit-breaker options
    • Adjustable threshold (ILIM) 0.5A to 6A
      • ±10% accuracy for ILIM > 1A
    • Adjustable transient blanking timer (ITIMER) to allow peak currents up to 2 × ILIM
    • Output load current monitor accuracy: ±6% (IOUT ≥ 1A)
  • Fast-trip response for short-circuit protection
    • 500ns (typical) response time
    • Adjustable (2 × ILIM) and fixed thresholds
  • Active high enable input with adjustable undervoltage lockout threshold (UVLO)
  • Adjustable output slew rate control (dVdt)
  • Overtemperature protection
  • Digital outputs
    • Priority power MUX control (AUXOFF) and fault indication (FLT) or
    • Power Good indication (PG) with adjustable threshold (PGTH)
  • UL 2367 recognition
    • File No. E339631
    • RILM ≥ 750Ω
  • IEC 62368-1 CB certified
  • Small footprint: QFN 2mm × 2mm, 0.45mm pitch
  • Wide operating input voltage range: 2.7V to 23V
    • 28V absolute maximum
    • Withstands negative voltages up to –15V
  • Integrated back-to-back FETs with low on-resistance: RON = 28.3mΩ (typical)
  • Ideal diode operation with true reverse-current blocking
  • Fast overvoltage protection
    • Overvoltage clamp (OVC) with pin-selectable threshold (3.8V, 5.7V, 13.8V) and 5µs (typical) response time OR
    • Adjustable overvoltage lockout (OVLO) with 1.2µs (typical) response time
  • Overcurrent protection with load current monitor output (ILM)
    • Active current limit OR circuit-breaker options
    • Adjustable threshold (ILIM) 0.5A to 6A
      • ±10% accuracy for ILIM > 1A
    • Adjustable transient blanking timer (ITIMER) to allow peak currents up to 2 × ILIM
    • Output load current monitor accuracy: ±6% (IOUT ≥ 1A)
  • Fast-trip response for short-circuit protection
    • 500ns (typical) response time
    • Adjustable (2 × ILIM) and fixed thresholds
  • Active high enable input with adjustable undervoltage lockout threshold (UVLO)
  • Adjustable output slew rate control (dVdt)
  • Overtemperature protection
  • Digital outputs
    • Priority power MUX control (AUXOFF) and fault indication (FLT) or
    • Power Good indication (PG) with adjustable threshold (PGTH)
  • UL 2367 recognition
    • File No. E339631
    • RILM ≥ 750Ω
  • IEC 62368-1 CB certified
  • Small footprint: QFN 2mm × 2mm, 0.45mm pitch

The TPS25947xx family of eFuses is a highly integrated circuit protection and power management solution in a small package. The devices provide multiple protection modes using very few external components and are a robust defense against overloads, short-circuits, voltage surges, reverse polarity 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 an excellent choice for power MUX/ORing applications as well as systems which need load side energy hold up storage in case input power supply fails. The devices use linear ORing based scheme to establish an almost zero DC reverse current and emulate ideal diode behavior with minimum forward voltage drop and power dissipation.

Output slew rate and inrush current can be adjusted using an external capacitor. Loads are protected from input overvoltage conditions either by clamping the output to a safe fixed maximum voltage (pin selectable), or by cutting off the output if input exceeds an adjustable overvoltage threshold. The devices respond to output overload by actively limiting the current or breaking the circuit. 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 2mm × 2mm, 10-pin HotRod™ QFN package for improved thermal performance and reduced system footprint.

The devices are characterized for operation over a junction temperature range from –40°C to +125°C.

The TPS25947xx family of eFuses is a highly integrated circuit protection and power management solution in a small package. The devices provide multiple protection modes using very few external components and are a robust defense against overloads, short-circuits, voltage surges, reverse polarity 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 an excellent choice for power MUX/ORing applications as well as systems which need load side energy hold up storage in case input power supply fails. The devices use linear ORing based scheme to establish an almost zero DC reverse current and emulate ideal diode behavior with minimum forward voltage drop and power dissipation.

Output slew rate and inrush current can be adjusted using an external capacitor. Loads are protected from input overvoltage conditions either by clamping the output to a safe fixed maximum voltage (pin selectable), or by cutting off the output if input exceeds an adjustable overvoltage threshold. The devices respond to output overload by actively limiting the current or breaking the circuit. 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 2mm × 2mm, 10-pin HotRod™ QFN package for improved thermal performance and reduced system footprint.

The devices are characterized for operation over a junction temperature range from –40°C to +125°C.
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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt TPS25947xx, 2.7V to 23V, 5.5A, 28mΩ True Reverse Current Blocking eFuse with Input Reverse Polarity Protection datasheet (Rev. C) PDF | HTML 21.05.2026
Anwendungshinweis How eFuse Ensures Integrated FET Operation in Safe Operating Area PDF | HTML 07.09.2022
Application brief Using an eFuse to Meet IEC62368-3 for USB 2.0 and USB 3.1 Power Sourcing Ports PDF | HTML 07.02.2022
Zertifikat TPS25947x UL2367 Certificate of Compliance E169910 19.01.2022
Zertifikat TPS25947x UL2367 Certificate of Compliance E339631 18.01.2022
Zertifikat TPS25947x CB Test Certificate IEC 62368-1 08.12.2021
Anwendungshinweis Basics of Power MUX (Rev. A) PDF | HTML 20.10.2020
Application brief Fast Role Swap, Linear ORing with TPS25947 and LM73100 in USB-Type C Systems (Rev. A) PDF | HTML 07.10.2020
Application brief eFuses in Smart Electricity Meters PDF | HTML 01.09.2020

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