TPS57114-Q1_15 Datasheet, PDF (1/39 Pages) Texas Instruments – TPS57114-Q1 2.95-V to 6-V Input, 4-A Output, 2-MHz, Synchronous Step-Down SWIFT™ Switcher

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TPS57114-Q1
SLVSAH5D – DECEMBER 2010 – REVISED APRIL 2015
TPS57114-Q1 2.95-V to 6-V Input, 4-A Output, 2-MHz, Synchronous Step-Down SWIFT™
Switcher
1 Features
•1 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade 1: –40°C to 125°C
Ambient Operating Temperature Range
– Device HBM ESD Classification Level 2
– Device CDM ESD Classification Level C4B
• Two 12-mΩ (typical) MOSFETs for High Efficiency
at 4-A Loads
• 200-kHz to 2-MHz Switching Frequency
• 0.8 V ± 1% Voltage Reference Over Temperature
(–40°C to 150°C)
• Synchronizes to External Clock
• Adjustable Slow Start and Sequencing
• UV and OV Power-Good Output
• –40°C to 150°C Operating Junction Temperature
Range
• Thermally Enhanced 3-mm × 3-mm 16-Pin QFN
• Pin-Compatible to TPS54418
2 Applications
• Low-Voltage, High-Density Power Systems
• Point-of-Load Regulation for High-Performance
DSPs, FPGAs, ASICs, and Microprocessors
• Broadband, Networking, and Optical
Communications Infrastructure
3 Description
The TPS57114-Q1 device is a full-featured 6-V, 4-A,
synchronous step-down current-mode converter with
two integrated MOSFETs.
The TPS57114-Q1 device enables small designs by
integrating the MOSFETs, implementing current-
mode control to reduce external component count,
reducing inductor size by enabling up to 2-MHz
switching frequency, and minimizing the IC footprint
with a small 3-mm × 3-mm thermally enhanced QFN
package.
The TPS57114-Q1 device provides accurate
regulation for a variety of loads with an accurate ±1%
voltage reference (V_ref) over temperature.
Efficiency is maximized through the integrated 12-mΩ
MOSFETs and 515-μA typical supply current. Using
the enable pin, shutdown supply current is reduced to
5.5 µA by entering a shutdown mode.
The internal undervoltage lockout setting is 2.45 V,
but programming the threshold with a resistor network
on the enable pin can increase the setting. The slow-
start pin controls the output-voltage start-up ramp. An
open-drain power-good signal indicates the output is
within 93% to 107% of its nominal voltage.
Frequency foldback and thermal shutdown protect the
device during an overcurrent condition.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS57114-Q1
WQFN (16)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Simplified Schematic
V_(VIN)
C_(I)
C_(SS)
Rt
TPS57114-Q1 C_(BOOT)
VIN
BOOT
R4
EN
L_(O)
PH
R5
C_(O)
PWRGD
VSENSE
SS/TR
RT/CLK
COMP
GND
R3
AGND
Thermal Pad
C1
V_O
R1
R2
Efficiency Curve
100
V_(VIN) = 3 V
95
90
V_(VIN) = 5 V
85
80
75
70
65
60
55
50
0
1
2
3
4
Output Current (A)
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.