TPS51518 Datasheet, PDF (1/34 Pages) Texas Instruments – Single-Phase, D-CAP™ and D-CAP2™ Controller with 2-Bit Flexible VID Control

TPS51518
www.ti.com
SLUSAO8 – DECEMBER 2011
Single-Phase, D-CAP™ and D-CAP2™ Controller with 2-Bit Flexible VID Control
Check for Samples: TPS51518
FEATURES
1
•2 Differential Voltage Feedback
• DC Compensation for Accurate Regulation
• Wide Input Voltage Range: 3 V to 28 V
• Flexible, 2-Bit VID Supports Output Voltage
from 0.5 V to 2.0 V
• Adaptive On-Time Modulation with Selectable
Control Architecture
– D-CAP™ Mode at 350 kHz for Fast
Transient Response
– D-CAP2™ Mode at 350 kHz for
Ultra-Low/Low ESR Output Capacitor
• 4700 ppm/°C, Low-Side R_DS(on) Current Sensing
• Programmable Soft-Start Time and Output
Voltage Transition Time
• Built-In Output Discharge
• Power Good Output
• Integrated Boost Switch
• Built-In OVP/UVP/OCP
• Thermal Shutdown (Non-latched)
• 3 mm × 3 mm, 20-Pin, QFN (RUK) Package
APPLICATIONS
• Notebook Computers
• GFX Supplies
• System Agent for Intel Chief River Platform
DESCRIPTION
The TPS51518 is a single phase, D-CAP™/
D-CAP2™ synchronous buck controller with 2-bit VID
inputs which can select up to four independent
externally programmable output voltage levels where
full external programmability in the voltage level, step
setting and voltage transition slew rate is desired. It is
used for GFX applications where multiple voltage
levels are desired.
The TPS51518 supports all POS/SPCAP and/or all
ceramic MLCC output capacitor options in
applications where remote sense is a requirement.
Tight DC load regulation is achieved through external
programmable integrator capacitor.
The TPS51518 provides full protection suite,
including OVP, OCL, 5-V UVLO and thermal
shutdown. It supports the conversion voltage up to
28 V, and output voltages adjustable from 0.5 V to
2 V.
The TPS51518 is available in the 3 mm × 3 mm,
QFN, 0.4-mm pitch package and is specified
from –10°C to 105°C.
GSNS
VSNS SLEW TRIP GND MODE
GSNS
V5IN
VIN
V3
DRVL
V2
TPS51518
DRVH
V1
SW
V0
BST
VREF PGOOD VID0 VID1 EN
V5IN
VSNS
VOUT
PGOOD
VID0 VID1 EN
UDG-11217
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
D-CAP, D-CAP2 are trademarks of Texas Instruments.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011, Texas Instruments Incorporated