TPS54531

AKTIV

Abwärtswandler, 3,5 bis 28 V Eingangsspannung, 5 A 570 kHz, mit Eco-Mode

Produktdetails

Iout (max) (A) 5 Vin (min) (V) 3.5 Vin (max) (V) 28 Topology Buck Type Converter Switching frequency (min) (kHz) 570 Switching frequency (max) (kHz) 570 Features Enable, Light Load Efficiency, Soft Start Fixed, UVLO adjustable Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 25 Rating Catalog Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.00011
Iout (max) (A) 5 Vin (min) (V) 3.5 Vin (max) (V) 28 Topology Buck Type Converter Switching frequency (min) (kHz) 570 Switching frequency (max) (kHz) 570 Features Enable, Light Load Efficiency, Soft Start Fixed, UVLO adjustable Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 25 Rating Catalog Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.00011
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • 3.5 to 28-V input voltage range
  • Adjustable output voltage down to 0.8 V
  • Integrated 80-mΩ high-side MOSFET supports up to 5-A continuous output current
  • High efficiency at light loads with a pulse skipping Eco-mode
  • Fixed 570-kHz switching frequency
  • Typical 1-µA shutdown quiescent current
  • Adjustable slow start limits inrush currents
  • Programmable UVLO threshold
  • Overvoltage transient protection
  • Cycle-by-cycle current-limit, frequency fold back, and thermal shutdown protection
  • Available in easy-to-use thermally enhanced 8-pin SO PowerPAD™ integrated circuit package
  • Use TPS56637 for higher efficiency in a smaller package
  • Create a custom design using the TPS54531 with the WEBENCH Power Designer
  • 3.5 to 28-V input voltage range
  • Adjustable output voltage down to 0.8 V
  • Integrated 80-mΩ high-side MOSFET supports up to 5-A continuous output current
  • High efficiency at light loads with a pulse skipping Eco-mode
  • Fixed 570-kHz switching frequency
  • Typical 1-µA shutdown quiescent current
  • Adjustable slow start limits inrush currents
  • Programmable UVLO threshold
  • Overvoltage transient protection
  • Cycle-by-cycle current-limit, frequency fold back, and thermal shutdown protection
  • Available in easy-to-use thermally enhanced 8-pin SO PowerPAD™ integrated circuit package
  • Use TPS56637 for higher efficiency in a smaller package
  • Create a custom design using the TPS54531 with the WEBENCH Power Designer

The TPS54531 device is a 28-V, 5-A non-synchronous buck converter that integrates a low R DS(on) high-side MOSFET. To increase efficiency at light loads, a pulse skipping Eco-mode feature is automatically activated. Furthermore, the 1-µA shutdown supply current allows the device to be used in battery powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input undervoltage lockout. An overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions. A cycle-by-cycle current-limit scheme, frequency fold back, and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54531 device is available in 8-pin SO PowerPAD integrated circuit package that has been internally optimized to improve thermal performance.

The TPS54531 device is a 28-V, 5-A non-synchronous buck converter that integrates a low R DS(on) high-side MOSFET. To increase efficiency at light loads, a pulse skipping Eco-mode feature is automatically activated. Furthermore, the 1-µA shutdown supply current allows the device to be used in battery powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input undervoltage lockout. An overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions. A cycle-by-cycle current-limit scheme, frequency fold back, and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54531 device is available in 8-pin SO PowerPAD integrated circuit package that has been internally optimized to improve thermal performance.

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Alle anzeigen 4
Typ Titel Datum
* Data sheet TPS54531 5-A, 28-V Input,SWIFTStep-Down Converter With Eco-mode datasheet (Rev. B) PDF | HTML 10 Okt 2023
EVM User's guide TPS54531 Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 26 Aug 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Application note Using TPS54335A to Create an Inverting Power Supply (Rev. A) 19 Jul 2017

Design und Entwicklung

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

Evaluierungsplatine

TPS54531EVM-530 — Evaluierungsmodul für DC/DC-Abwärtswandler TPS54531

The TPS54531EVM-530 is a fully assembled and tested circuit for evaluating the TPS54531 synchronous step-down SWIFT™ converter. The EVM converts a 8-V to 28-V input voltage to a regulated 5-V output voltage that delivers up to 5 A and 95.3% efficiency.

Benutzerhandbuch: PDF | HTML
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Benutzerhandbuch: PDF | HTML
Simulationsmodell

TPS54531 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM872A.ZIP (309 KB) - PSpice Model
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