TPS53318_15 Datasheet, PDF (1/37 Pages) Texas Instruments – TPS5331x High-Efficiency, 8-A or 14-A, Synchronous Buck Converter with Eco-mode Control

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TPS53318, TPS53319
SLUSAY8D – JUNE 2012 – REVISED FEBRUARY 2015
TPS5331x High-Efficiency, 8-A or 14-A, Synchronous Buck Converter
with Eco-mode Control
1 Features
•1 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 (DQP) Package with PowerPAD™
2 Applications
• Server/Storage
• Workstations and Desktops
• Telecommunications Infrastructure
3 Description
The TPS53318 and TPS53319 devices 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.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS53318
TPS53319
LSON-CLIP (22) 6.00 mm x 5.00 mm
(1) For all available packages, see the Package Option
Addendum section at the end of the datasheet.
Simplified Application
V_VDD
V_IN
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
1
V_OUT
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.