TPS53355 Datasheet, PDF (1/29 Pages) Texas Instruments – High-Efficiency 30-A Synchronous Buck Converter with Eco-mode™

TPS53355
www.ti.com
SLUSAE5 – AUGUST 2011
High-Efficiency 30-A Synchronous Buck Converter with Eco-mode™
Check for Samples: TPS53355
FEATURES
1
•2 96% Maximum Efficiency
• Conversion Input Voltage Range: 3 V to 15 V
• VDD Input Voltage Range: 4.5 V to 25 V
• Output Voltage Range: 0.6 V to 5.5 V
• 5-V LDO Output
• Supports Single Rail Input
• Integrated Power MOSFETs with 30-A of
Continuous Output Current
• Auto-Skip Eco-mode™ for Light-Load
Efficiency
• <10 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
TPS53355 is a D-CAP™ mode, 30-A synchronous
switcher with integrated MOSFETs. It is designed for
ease of use, low external component count, and
space-conscious power systems.
This device features 5 mΩ/2.0 mΩ integrated
MOSFETs, accurate 1%, 0.6-V reference, and
integrated boost switch. A sample of competitive
features include: 3-V to 15-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 3 V to
15 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.
The device is available in 5 mm x 6 mm, 22-pin QFN
package and is specified from –40°C to 85°C.
TYPICAL APPLICATION
V
VDD
V
IN
22 21 20 19 18 17 16 15 14 13 12
VREG
TPS53355
GND
PGOOD
EN
1 2 3 4 5 6 7 8 9 10 11
V
OUT
UDG-11001
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 © 2011, Texas Instruments Incorporated