TPS54494

AKTIV

Synchroner Zweikanal-Abwärtsschalter, 4 A, mit integriertem FET

Produktdetails

Iout (max) (A) 4 Vin (min) (V) 4.5 Vin (max) (V) 18 Topology Buck Type Converter Switching frequency (min) (kHz) 700 Switching frequency (max) (kHz) 700 Features Enable, Light Load Efficiency, Power good, Soft Start Fixed, Synchronous Rectification Control mode D-CAP2 Vout (min) (V) 0.76 Vout (max) (V) 7 Rating Catalog Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.0012
Iout (max) (A) 4 Vin (min) (V) 4.5 Vin (max) (V) 18 Topology Buck Type Converter Switching frequency (min) (kHz) 700 Switching frequency (max) (kHz) 700 Features Enable, Light Load Efficiency, Power good, Soft Start Fixed, Synchronous Rectification Control mode D-CAP2 Vout (min) (V) 0.76 Vout (max) (V) 7 Rating Catalog Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.0012
HTSSOP (PWP) 16 32 mm² 5 x 6.4 VQFN (RSA) 16 16 mm² 4 x 4
  • D-CAP2 Control Mode
    • Fast Transient Response
    • No External Parts Required For Loop Compensation
    • Compatible with Ceramic Output Capacitors
  • Wide Input Voltage Range : 4.5 V to 18 V
  • Output Voltage Range: 0.76V to 7V
  • Highly Efficient Integrated FETs Optimized
    for Low Duty Cycle Applications
    • 90 mΩ (High Side) and 60 mΩ
      (Low Side)
  • High Initial Reference Accuracy
  • 4A CH1 / 2A CH2 Continuous Load Current
  • Low-Side rDS(on) Loss-Less
    Current Sensing
  • Fixed Soft Start : 1 ms
  • Non-Sinking Pre-Biased Soft Start
  • Powergood
  • 700 kHz Switching Frequency
  • Cycle-by-Cycle Over-Current Limit Control
  • OCL/UVLO/TSD Protections
  • Hiccup Timer for Overload Protection
  • Adaptive Gate Drivers with Integrated
    Boost PMOS Switch
  • OCP Constant Due To Thermally Compensated
    rDS(on) with 4000ppm/°C
  • 16-Pin HTSSOP, 16-Pin VQFN
  • Auto-Skip Eco-mode for High Efficiency at Light Load
  • D-CAP2 Control Mode
    • Fast Transient Response
    • No External Parts Required For Loop Compensation
    • Compatible with Ceramic Output Capacitors
  • Wide Input Voltage Range : 4.5 V to 18 V
  • Output Voltage Range: 0.76V to 7V
  • Highly Efficient Integrated FETs Optimized
    for Low Duty Cycle Applications
    • 90 mΩ (High Side) and 60 mΩ
      (Low Side)
  • High Initial Reference Accuracy
  • 4A CH1 / 2A CH2 Continuous Load Current
  • Low-Side rDS(on) Loss-Less
    Current Sensing
  • Fixed Soft Start : 1 ms
  • Non-Sinking Pre-Biased Soft Start
  • Powergood
  • 700 kHz Switching Frequency
  • Cycle-by-Cycle Over-Current Limit Control
  • OCL/UVLO/TSD Protections
  • Hiccup Timer for Overload Protection
  • Adaptive Gate Drivers with Integrated
    Boost PMOS Switch
  • OCP Constant Due To Thermally Compensated
    rDS(on) with 4000ppm/°C
  • 16-Pin HTSSOP, 16-Pin VQFN
  • Auto-Skip Eco-mode for High Efficiency at Light Load

The TPS54494 is a dual, adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54494 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, and low standby current solution. The main control loops of the TPS54494 use the D-CAP2™ mode control which provides a very fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ operation at light loads. Eco-mode™ allows the TPS54494 to maintain high efficiency during lighter load conditions. The TPS54494 is able to adapt to both low equivalent series resistance (ESR) output capacitors such as POSCAP or SP-CAP, and ultra-low ESR, ceramic capacitors. The device provides convenient and efficient operation with input voltages from 4.5V to 18V.

The TPS54494 is available in a 4.4 mm × 5 mm 16-pin TSSOP (PWP) and 4 mm × 4 mm 16-pin VQFN (RSA) package, and is specified for an ambient temperature range from –40°C to 85°C.

The TPS54494 is a dual, adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54494 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, and low standby current solution. The main control loops of the TPS54494 use the D-CAP2™ mode control which provides a very fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ operation at light loads. Eco-mode™ allows the TPS54494 to maintain high efficiency during lighter load conditions. The TPS54494 is able to adapt to both low equivalent series resistance (ESR) output capacitors such as POSCAP or SP-CAP, and ultra-low ESR, ceramic capacitors. The device provides convenient and efficient operation with input voltages from 4.5V to 18V.

The TPS54494 is available in a 4.4 mm × 5 mm 16-pin TSSOP (PWP) and 4 mm × 4 mm 16-pin VQFN (RSA) package, and is specified for an ambient temperature range from –40°C to 85°C.

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Technische Dokumentation

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Alle anzeigen 3
Typ Titel Datum
* Data sheet 4A/2A Dual Channel Synchronous Step-Down Switcher with Integrated FET, TPS54494 datasheet (Rev. B) 20 Aug 2013
EVM User's guide TPS54494 Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 30 Aug 2021
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

TPS54494EVM-057 — TPS54494-Evaluierungsmodul

The Texas Instruments TPS54494EVM-057 evaluation module (EVM) helps designers evaluate the performance of the TPS54494 4A Dual Channel Synchronous Step-Down Switcher with Integrated FET.
Benutzerhandbuch: PDF | HTML
Simulationsmodell

TPS54494 PSpice Transient Model (Rev. A)

SLVM612A.ZIP (361 KB) - PSpice Model
Gehäuse Pins Herunterladen
HTSSOP (PWP) 16 Optionen anzeigen
VQFN (RSA) 16 Optionen anzeigen

Bestellen & Qualität

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  • Qualifikationszusammenfassung
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