TPS53355_15 Datasheet, PDF (1/37 Pages) Texas Instruments – TPS53355 High-Efficiency 30-A Synchronous Buck Converter With Eco-mode™

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TPS53355
SLUSAE5B – AUGUST 2011 – REVISED JANUARY 2015
TPS53355 High-Efficiency 30-A Synchronous Buck Converter With Eco-mode™
1 Features
•1 96% Maximum Efficiency
• Conversion Input Voltage Range: 1.5 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 Shutdown 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
• Precharged Startup Capability
• Adjustable Overcurrent Limit with Thermal
Compensation
• Overvoltage, Undervoltage, UVLO and
Overtemperature Protection
• Supports All Ceramic Output Capacitors
• Open-Drain Power Good Indication
• Incorporates NexFET™ Power Block Technology
• 22-Pin QFN Package With PowerPAD™
2 Applications
• Servers and Storage
• Workstations and Desktops
• Telecommunications Infrastructure
3 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: 1.5-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 1.5 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.
PART NUMBER
TPS53355
Device Information⁽¹⁾
PACKAGE
BODY SIZE (NOM)
LSON-CLIP (22)
6.00 mm × 5.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
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
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.