TPS53318 Datasheet, PDF (1/34 Pages) Texas Instruments – High-Efficiency 8-A or 14-A Synchronous Buck Converter with Eco-mode

TPS53318, TPS53319
www.ti.com
SLUSAY8B – JUNE 2012 – REVISED MAY 2013
High-Efficiency 8-A or 14-A Synchronous Buck Converter with Eco-mode™
Check for Samples: TPS53318, TPS53319
FEATURES
1
•2 Conversion Input Voltage Range: 1.5 V to 22 V
• VDD Input Voltage Range: 4.5 V to 25 V
• 91% Efficiency from 12 V to 1.5 V at 14 A
• Output Voltage Range: 0.6 V to 5.5 V
• 5-V LDO Output
• Supports Single Rail Input
• Integrated Power MOSFETs with 8-A
(TPS53318) or 14-A (TPS53319) of Continuous
Output Current
• Auto-Skip Eco-mode™ for Light-Load
Efficiency
• <110 μA Shut Down Current
• D-CAP™ Mode with Fast Transient Response
• Selectable Switching Frequency from 250 kHz
to 1 MHz with External Resistor
• Selectable Auto-Skip or PWM-Only Operation
• Built-in 1% 0.6-V Reference.
• 0.7-ms, 1.4-ms, 2.8-ms and 5.6-ms Selectable
Internal Voltage Servo Soft-Start
• Integrated Boost Switch
• Pre-Charged Start-up Capability
• Adjustable Overcurrent Limit with Thermal
Compensation
• Overvoltage, Undervoltage, UVLO and Over-
Temperature Protection
• Supports All Ceramic Output Capacitors
• Open-Drain Power Good Indication
• Incorporates NexFET™ Power Block
Technology
• 22-pin QFN Package with PowerPAD™
APPLICATIONS
• Server/Storage
• Workstations and Desktops
• Telecommunications Infrastructure
DESCRIPTION
The TPS53318 and TPS53319 are D-CAP™ mode,
8-A or 14-A synchronous switchers with integrated
MOSFETs. They are designed for ease of use, low
external component count, and space-conscious
power systems.
These devices feature accurate 1%, 0.6-V reference,
and integrated boost switch. A sample of competitive
features include: 1.5-V to 22-V wide conversion input
voltage range, very low external component count, D-
CAP™ mode control for super fast transient, auto-
skip mode operation, internal soft-start control,
selectable frequency, and no need for compensation.
The conversion input voltage ranges from 1.5 V to
22 V, the supply voltage range is from 4.5 V to 25 V,
and the output voltage range is from 0.6 V to 5.5 V.
These devices are available in 5 mm x 6 mm, 22-pin
QFN package and is specified from –40°C to 85°C.
SIMPLIFIED APPLICATION
VVDD
VIN
22 21 20 19 18 17 16 15 14 13 12
VREG
TPS53318/TPS53319
GND
1 2 3 4 5 6 7 8 9 10 11
PGOOD
EN
VOUT
UDG-12040
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.
Eco-mode, NexFET, PowerPAD 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 © 2012–2013, Texas Instruments Incorporated