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

TPS53511

AKTIV

1,5-A-Abwärtsregler mit integrierten MOSFETs

Eine neuere Version dieses Produkts ist verfügbar

Ähnliche Funktionalität wie verglichener Baustein
TPS562211 AKTIV Synchroner Abwärtswandler, 4,2 bis 18 V, 2 A, mit 1 % Genauigkeit, PG/SS und PFM/Forced-PWM im SOT58 Higher efficiency with lower external component count in a smaller package.

Produktdetails

Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 1.5 Vin (min) (V) 4.5 Vin (max) (V) 18 Switching frequency (min) (kHz) 700 Switching frequency (max) (kHz) 700 Features Enable, Light Load Efficiency, Power good, Pre-Bias Start-Up, Synchronous Rectification Control mode D-CAP2 Vout (min) (V) 0.75 Vout (max) (V) 5 Iq (typ) (µA) 1300 Duty cycle (max) (%) 95
Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 1.5 Vin (min) (V) 4.5 Vin (max) (V) 18 Switching frequency (min) (kHz) 700 Switching frequency (max) (kHz) 700 Features Enable, Light Load Efficiency, Power good, Pre-Bias Start-Up, Synchronous Rectification Control mode D-CAP2 Vout (min) (V) 0.75 Vout (max) (V) 5 Iq (typ) (µA) 1300 Duty cycle (max) (%) 95
VQFN (RGT) 16 9 mm² 3 x 3
  • Continuous 1.5-A output current
  • 4.5-V to 18-V supply voltage range
  • 2-V to 18-V conversion voltage range
  • DCAP2™ mode control enables fast transient response
  • Low output ripple and support all MLCC output capacitor
  • Skip mode for light load control
  • Highly efficient integrated FETs optimized for lower duty cycle applications
  • High efficiency, less than 10-µA supply current at shutdown
  • Adjustable soft-start time
  • Support pre-biased soft start
  • 700-kHz switching frequency
  • Cycle-by-cycle overcurrent limit
  • Open-drain power-good indication
  • Internal bootstrap switch
  • Small 3-mm × 3-mm, 16-pin QFN (RGT) package
  • Continuous 1.5-A output current
  • 4.5-V to 18-V supply voltage range
  • 2-V to 18-V conversion voltage range
  • DCAP2™ mode control enables fast transient response
  • Low output ripple and support all MLCC output capacitor
  • Skip mode for light load control
  • Highly efficient integrated FETs optimized for lower duty cycle applications
  • High efficiency, less than 10-µA supply current at shutdown
  • Adjustable soft-start time
  • Support pre-biased soft start
  • 700-kHz switching frequency
  • Cycle-by-cycle overcurrent limit
  • Open-drain power-good indication
  • Internal bootstrap switch
  • Small 3-mm × 3-mm, 16-pin QFN (RGT) package

The TPS53511 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The device is suitable for points-of-load (POL) in computing power systems, and provides a cost-effective, low component count, low standby current solution. The main control loop for the TPS53511 uses the D-CAP2™ mode control to provide a fast transient response with no external components. The adaptive on-time control supports seamless operation between PWM mode during heavy load conditions and reduced frequency operation during light-load conditions for high efficiency.

The TPS53511 includes a proprietary circuit that enables the device 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 operates from 4.5-V to 18-V supply input, and from 2-V to 18-V input power supply voltage. The device features an adjustable slow-start time and a power-good function. It also supports pre-biased soft start. The TPS53511 is available in a 16-pin QFN package, and is designed to operate from –40°C to 85°C.

The TPS53511 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The device is suitable for points-of-load (POL) in computing power systems, and provides a cost-effective, low component count, low standby current solution. The main control loop for the TPS53511 uses the D-CAP2™ mode control to provide a fast transient response with no external components. The adaptive on-time control supports seamless operation between PWM mode during heavy load conditions and reduced frequency operation during light-load conditions for high efficiency.

The TPS53511 includes a proprietary circuit that enables the device 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 operates from 4.5-V to 18-V supply input, and from 2-V to 18-V input power supply voltage. The device features an adjustable slow-start time and a power-good function. It also supports pre-biased soft start. The TPS53511 is available in a 16-pin QFN package, and is designed to operate from –40°C to 85°C.

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Technische Dokumentation

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Typ Titel Datum
* Data sheet 4.5-V to 18-V Input, 1.5-A Step-Down Regulator with Integrated Switcher datasheet (Rev. B) PDF | HTML 17 Aug 2021
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 30 Apr 2024
Technical article How to latch off a power converter that has a hiccup fault response PDF | HTML 20 Dez 2023
Application note Unified Ground Connection Recommendation on TPS53K- Integrated FET-Converter Dev 25 Jan 2017

Design und Entwicklung

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

Simulationsmodell

TPS53511 TINA-TI Transient Reference Design

SLUM394.TSC (197 KB) - TINA-TI Reference Design
Simulationsmodell

TPS53511 TINA-TI Transient Spice Model

SLUM393.ZIP (44 KB) - TINA-TI Spice Model
Simulationsmodell

TPS53511 Unencrypted PSpice Transient Model Package (Rev. A)

SLUM380A.ZIP (319 KB) - PSpice Model
Gehäuse Pins Herunterladen
VQFN (RGT) 16 Optionen anzeigen

Bestellen & Qualität

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  • Qualifikationszusammenfassung
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