TPS51317

ACTIVE

3.3V / 5V Input, 6A, D-CAP+ Mode Synchronous Step-Down Converter

Product details

Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 6 Vin (min) (V) 3.3 Vin (max) (V) 5 Switching frequency (min) (kHz) 800 Switching frequency (max) (kHz) 1500 Features Enable, Light load efficiency, Output discharge, Power good, Synchronous Rectification, Tracking Control mode D-CAP+ Vout (min) (V) 0.6 Vout (max) (V) 2 Iq (typ) (µA) 1100 Duty cycle (max) (%) 90
Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 6 Vin (min) (V) 3.3 Vin (max) (V) 5 Switching frequency (min) (kHz) 800 Switching frequency (max) (kHz) 1500 Features Enable, Light load efficiency, Output discharge, Power good, Synchronous Rectification, Tracking Control mode D-CAP+ Vout (min) (V) 0.6 Vout (max) (V) 2 Iq (typ) (µA) 1100 Duty cycle (max) (%) 90
VQFN (RGB) 20 14 mm² 4 x 3.5
  • Integrated FETs Converter w/TI Proprietary D-CAP+ Mode Architecture
  • Minimum External Components Count
  • Integrated FETs Converter w/TI Proprietary D-CAP+ Mode Architecture
  • Support all MLCC Output Capacitor and SP/POSCAP
  • Auto-Skip Mode and Ripple Reduction Mode
  • Optimized Efficiency at Light and Heavy Loads
  • Selectable 800-kHz, 1-MHz, 1.2-MHz and 1.5-MHz Frequency
  • Up to 6.0-V Conversion Voltage Range
  • Adjustable Output Voltage Range From 0.6 V to 2 V
  • Small 3.5 mm × 4 mm, 20-Pin QFN Package
  • Integrated FETs Converter w/TI Proprietary D-CAP+ Mode Architecture
  • Minimum External Components Count
  • Integrated FETs Converter w/TI Proprietary D-CAP+ Mode Architecture
  • Support all MLCC Output Capacitor and SP/POSCAP
  • Auto-Skip Mode and Ripple Reduction Mode
  • Optimized Efficiency at Light and Heavy Loads
  • Selectable 800-kHz, 1-MHz, 1.2-MHz and 1.5-MHz Frequency
  • Up to 6.0-V Conversion Voltage Range
  • Adjustable Output Voltage Range From 0.6 V to 2 V
  • Small 3.5 mm × 4 mm, 20-Pin QFN Package

The TPS51317 is a fully integrated synchronous buck regulator employing D-CAP+™ mode architechture. It is used for 3.3-V and 5-V step-down systems where space is a consideration, high-performance and optimized component count are required.

The TPS51317 features four switching frequency settings (up to 1.5 MHz), synchronous operation in SKIP, droop support, external tracking support, pre-bias startup, output soft discharge, integrated bootstrap switch, power good function, enable function and complete protection functions, and both output ceramic and SP/POS capacitor support. It supports supply and conversion voltages up to 6.0 V, and output voltages adjustable from 0.6 V to 2.0V.

The TPS51317 is available in the 3.5 mm × 4 mm 20-pin QFN package (Green RoHs compliant and Pb free) and is specified from -40°C to 85°C.

The TPS51317 is a fully integrated synchronous buck regulator employing D-CAP+™ mode architechture. It is used for 3.3-V and 5-V step-down systems where space is a consideration, high-performance and optimized component count are required.

The TPS51317 features four switching frequency settings (up to 1.5 MHz), synchronous operation in SKIP, droop support, external tracking support, pre-bias startup, output soft discharge, integrated bootstrap switch, power good function, enable function and complete protection functions, and both output ceramic and SP/POS capacitor support. It supports supply and conversion voltages up to 6.0 V, and output voltages adjustable from 0.6 V to 2.0V.

The TPS51317 is available in the 3.5 mm × 4 mm 20-pin QFN package (Green RoHs compliant and Pb free) and is specified from -40°C to 85°C.

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Technical documentation

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* Data sheet 3.3-V/5-V Input, 6A, D-CAP+ Mode Synchronous Step-down Integrated FETs Converter datasheet 19 Feb 2011
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 30 Apr 2024

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation model

TPS51317 IBIS Model

SLUM348.ZIP (10 KB) - IBIS Model
Simulation model

TPS51317 Unencrypted PSpice Transient Model Package (Rev. A)

SLUM156A.ZIP (51 KB) - PSpice Model
Package Pins CAD symbols, footprints & 3D models
VQFN (RGB) 20 Ultra Librarian

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