Startseite Energiemanagement AC/DC- und DC/DC-Wandler (integrierter FET)

TPS54A20

AKTIV

Kleiner, 10-MHz-, 8-V- bis 14-V-, 10-A-Synchron-SWIFT™-Serienkondensator-Abwärtswandler

Eine neuere Version dieses Produkts ist verfügbar

Gleiche Funktionalität, andere Pinbelegung als verglichener Baustein
TPS543A22 AKTIV Synchroner SWIFT™-Abwärtswandler, 4 bis 18 V Eingangsspannung, 12 A, erweiterter Strommodus Fixed frequency converter with smaller solution size and higher efficiency

Produktdetails

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 10 Vin (min) (V) 8 Vin (max) (V) 14 Switching frequency (min) (kHz) 4000 Switching frequency (max) (kHz) 10000 Features Adjustable current limit, Enable, Frequency synchronization, Phase Interleaving, Power good, Pre-Bias Start-Up, Synchronous Rectification, UVLO adjustable Control mode Constant on-time (COT) Vout (min) (V) 0.5 Vout (max) (V) 2 Iq (typ) (µA) 5000 Duty cycle (max) (%) 25
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 10 Vin (min) (V) 8 Vin (max) (V) 14 Switching frequency (min) (kHz) 4000 Switching frequency (max) (kHz) 10000 Features Adjustable current limit, Enable, Frequency synchronization, Phase Interleaving, Power good, Pre-Bias Start-Up, Synchronous Rectification, UVLO adjustable Control mode Constant on-time (COT) Vout (min) (V) 0.5 Vout (max) (V) 2 Iq (typ) (µA) 5000 Duty cycle (max) (%) 25
VQFN-HR (RNJ) 20 14 mm² 4 x 3.5
  • Two-phase, Synchronous Series Capacitor Buck
    Converter
  • Automatic Current Balancing Between Phases
  • 2-MHz to 5-MHz Per Phase Switching Frequency
  • 14-ns Minimum On-Time
  • 0.51-V to 2-V Output Voltage Range with ±0.5%
    Feedback Reference Voltage
  • Input Overvoltage Lockout for 17-V Surge
    Protection
  • Adjustable Current Limit with Auto Restart
    (Hiccup)
  • Synchronizes to an External Clock
  • Fixed Frequency in Steady State
  • Adaptive On-Time Control
  • Internal Feedback Loop Compensation
  • Internal Gate Drive LDO with External Supply
    Option
  • EN Pin Allowing for Adjustable Input UVLO
  • Selectable Soft-Start Time
  • Monotonic Startup with Pre-biased Output
  • Output Power Good Indicator (Open Drain)
  • Output Overvoltage/Undervoltage Protection
  • Two-phase, Synchronous Series Capacitor Buck
    Converter
  • Automatic Current Balancing Between Phases
  • 2-MHz to 5-MHz Per Phase Switching Frequency
  • 14-ns Minimum On-Time
  • 0.51-V to 2-V Output Voltage Range with ±0.5%
    Feedback Reference Voltage
  • Input Overvoltage Lockout for 17-V Surge
    Protection
  • Adjustable Current Limit with Auto Restart
    (Hiccup)
  • Synchronizes to an External Clock
  • Fixed Frequency in Steady State
  • Adaptive On-Time Control
  • Internal Feedback Loop Compensation
  • Internal Gate Drive LDO with External Supply
    Option
  • EN Pin Allowing for Adjustable Input UVLO
  • Selectable Soft-Start Time
  • Monotonic Startup with Pre-biased Output
  • Output Power Good Indicator (Open Drain)
  • Output Overvoltage/Undervoltage Protection

The TPS54A20 is a two-phase, synchronous series capacitor buck converter designed for small size, low voltage applications from a 12-V input rail. This topology uniquely merges a switched capacitor circuit with a two phase buck converter. Advantages include automatic current balancing between the inductors, lower switching losses which enable high frequency (HF) operation, and voltage step-down through the series capacitor. Small, low profile inductors used with the TPS54A20 significantly reduce total solution area and height. An adaptive on-time control architecture provides fast transient response and accurate voltage regulation at up to 10-MHz operating frequency. Fixed frequency operation during steady state is maintained through the use of a phase lock loop (PLL) to lock switching signals to a reference oscillator.

The TPS54A20 is a two-phase, synchronous series capacitor buck converter designed for small size, low voltage applications from a 12-V input rail. This topology uniquely merges a switched capacitor circuit with a two phase buck converter. Advantages include automatic current balancing between the inductors, lower switching losses which enable high frequency (HF) operation, and voltage step-down through the series capacitor. Small, low profile inductors used with the TPS54A20 significantly reduce total solution area and height. An adaptive on-time control architecture provides fast transient response and accurate voltage regulation at up to 10-MHz operating frequency. Fixed frequency operation during steady state is maintained through the use of a phase lock loop (PLL) to lock switching signals to a reference oscillator.

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Technische Dokumentation

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Typ Titel Datum
* Data sheet TPS54A20 8-V to 14-V Input, 10-A, up to 10-MHz SWIFT Step Down Converter datasheet (Rev. A) PDF | HTML 07 Apr 2016
Analog Design Journal Control-Mode Quick Reference Guide (Rev. B) PDF | HTML 29 Aug 2023
EVM User's guide TPS54A20 SWIFT™ Step-Down Converter Evaluation Module User's Guide (Rev. B) PDF | HTML 03 Aug 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Analog Design Journal Using a high‐freq. switching regulator w/o a linear reg. to power a data‐convert 24 Sep 2018
More literature Common Mistakes in DC/DC Converters and How to Fix Them 14 Feb 2018
More literature Design of Multi-MHz Series Capacitor Buck Converters Used As Voltage Regulators 31 Jan 2018
Analog Design Journal Saving board space with a low-profile series-capacitor buck converter 24 Okt 2016
More literature Design of a high-frequency series capacitor buck converter 17 Aug 2016
Application note Introduction to the Series Capacitor Buck Converter (Rev. A) 24 Mai 2016
Technical article No small matter: How to reduce voltage regulator size PDF | HTML 23 Mai 2016
White paper Breakthrough power delivery for space-constrained applications 13 Mai 2016

Design und Entwicklung

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

Evaluierungsplatine

TPS54A20EVM-770 — TPS54A20 Synchron-Abwärtswandler – Evaluierungsmodul

TPS54A20EVM-770 is a 10 A synchronous dual phase converter evaluation module (EVM).  The EVM generates a 1.2 V output voltage froma a nominal 12 V input.  The input voltage range is 9.2 V to 14 V with a minimum start up voltage of 9.4 V.  The circuit is set upfor default operation of (...)

Benutzerhandbuch: PDF | HTML
Simulationsmodell

TPS54A20 PSpice Transient Model

SLVMBF2.ZIP (583 KB) - PSpice Model
Referenzdesigns

PMP11438 — Drei verschiedene Abwärtswandlerschaltungen zur Umwandlung von 12 V in 1,2 V bei >6 A-Laststrom – Re

PMP11438 is a vehicle used to compare three different power solutions for converting a 12V bus to 1.2V at 6-10A. The 1.2V output voltage is applicable to DDR4 memory applications. Each solution offers an advantage in either full load efficiency, light load efficiency, density, height, transient (...)
Test report: PDF
Schaltplan: PDF
Referenzdesigns

PMP15008 — Referenzdesign für winzigen und flachen Point-of-Load-Spannungsregler (10 A)

The PMP15008 reference design is a small, high frequency point-of-load voltage regulator. A unique converter topology enables high efficiency while operating at 2 MHz per phase. This design is targeted at applications like processor or memory power with an 8 V to 14 V input and 0.5 V to 2 V, (...)
Test report: PDF
Schaltplan: PDF
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
VQFN-HR (RNJ) 20 Ultra Librarian

Bestellen & Qualität

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