TPS51313 3V to 5.5V input, DCAP2, 1MHz, Step-Down DC/DC Converter for nVidia Graphics PEX (PCI-Express) Rail | TI.com

TPS51313 (ACTIVE)

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

3V to 5.5V input, DCAP2, 1MHz, Step-Down DC/DC Converter for nVidia Graphics PEX (PCI-Express) Rail - TPS51313
Datasheet
 

Description

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.

Features

  • 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

Parametrics

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Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Control mode Duty cycle (Max) (%) Operating temperature range (C) Rating Package Group Type Package size: mm2:W x L (PKG)
TPS51313 Order now 3.1     5.5     0.6     3.3     3     1     1000     1000     0.8     Enable
Light Load Efficiency
Output Discharge
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
D-CAP2     90     -10 to 85     Catalog     VSON | 10     Converter     10VSON: 9 mm2: 3 x 3 (VSON | 10)    
TPS51312 Order now 3.1     5.5     0.6     3.3     3     1     900     900     0.8     Enable
Light Load Efficiency
Output Discharge
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
D-CAP2     90     -40 to 85     Catalog     VSON | 10     Converter     10VSON: 9 mm2: 3 x 3 (VSON | 10)    
TPS53311 Order now 2.9     6     0.6     4.2     3     1     1100     1100     0.32     Enable
Light Load Efficiency
Output Discharge
Phase Interleaving
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
Voltage Mode     99     -40 to 85     Catalog     VQFN | 16     Converter     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)    
TPS53313 Order now 4.5     16     0.6     10     6     1     250     1500     0.32     Enable
Light Load Efficiency
Output Discharge
Power Good
Pre-Bias Start-Up
Synchronous Rectification    
Voltage Mode     99     -40 to 85     Catalog     VQFN | 24     Converter     24VQFN: 16 mm2: 4 x 4 (VQFN | 24)