TPS51313

ACTIVE

3V to 5.5V input, DCAP2, 1MHz, Step-Down DC/DC Converter for nVidia Graphics PEX (PCI-Express) Rail

Product details

Rating Catalog Operating temperature range (°C) -10 to 85 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 3.1 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1000 Switching frequency (max) (kHz) 1000 Features Enable, Light load efficiency, Output discharge, Power good, Pre-Bias Start-Up, Soft Start Fixed, Synchronous Rectification Control mode D-CAP2 Vout (min) (V) 0.6 Vout (max) (V) 3.3 Iq (typ) (µA) 800 Duty cycle (max) (%) 90
Rating Catalog Operating temperature range (°C) -10 to 85 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 3.1 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1000 Switching frequency (max) (kHz) 1000 Features Enable, Light load efficiency, Output discharge, Power good, Pre-Bias Start-Up, Soft Start Fixed, Synchronous Rectification Control mode D-CAP2 Vout (min) (V) 0.6 Vout (max) (V) 3.3 Iq (typ) (µA) 800 Duty cycle (max) (%) 90
VSON (DRC) 10 9 mm² 3 x 3
  • Input Voltage VIN Range : 3.1 V to 5.5 V
  • Bias Voltage VCC Range: 3.1 V to 5.5 V
  • Output Voltage Range: 0.6 V to 3.3 V
  • 0.6-V, 1% Voltage Reference Accuracy
  • Switching Frequency: 1 MHz
  • No External Compensation is Required
  • Fixed Voltage Servo Soft-Start Function
  • Thermal Shutdown
  • Input Voltage VIN Range : 3.1 V to 5.5 V
  • Bias Voltage VCC Range: 3.1 V to 5.5 V
  • Output Voltage Range: 0.6 V to 3.3 V
  • 0.6-V, 1% Voltage Reference Accuracy
  • Switching Frequency: 1 MHz
  • No External Compensation is Required
  • Fixed Voltage Servo Soft-Start Function
  • Thermal Shutdown

The TPS51313 is an easy-to-use, fully integrated, synchronous buck converter for low voltage point-of-load applications. It is designed to meet the NVIDIA OpenVreg Type 0 specifications, including the package and footprint requirement. It supports 3-A (maximum) of dc output current at output voltages from 0.6 V to 3.3 V. The D-CAP2 mode adaptive, constant on-time control with 1-MHz switching frequency allows a small footprint when designed using all ceramic output capacitors and offers a low external component count. The device also features auto-skip function at light load condition, pre-biased start-up and internally fixed soft-start time. When the device is disabled, the output capacitor is discharged through internal resistor. The TPS51313 is available in a 3 mm x 3 mm, 10-pin DRC package (Green RoHS compliant and Pb free) and is specified between –10°C and 85°C.

The TPS51313 is an easy-to-use, fully integrated, synchronous buck converter for low voltage point-of-load applications. It is designed to meet the NVIDIA OpenVreg Type 0 specifications, including the package and footprint requirement. It supports 3-A (maximum) of dc output current at output voltages from 0.6 V to 3.3 V. The D-CAP2 mode adaptive, constant on-time control with 1-MHz switching frequency allows a small footprint when designed using all ceramic output capacitors and offers a low external component count. The device also features auto-skip function at light load condition, pre-biased start-up and internally fixed soft-start time. When the device is disabled, the output capacitor is discharged through internal resistor. The TPS51313 is available in a 3 mm x 3 mm, 10-pin DRC package (Green RoHS compliant and Pb free) and is specified between –10°C and 85°C.

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* Data sheet TPS51313 datasheet 13 May 2012

Design & development

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Simulation model

TPS51313 Unencrypted PSpice Transient Model Package (Rev. A)

SLUM334A.ZIP (39 KB) - PSpice Model
Package Pins CAD symbols, footprints & 3D models
VSON (DRC) 10 Ultra Librarian

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