TPS54618-Q1 Datasheet, PDF (1/38 Pages) Texas Instruments – 2.95-V to 6-V Input, 6-A Output, 2-MHz, Synchronous Step-Down SWIFT Switcher

TPS54618-Q1
www.ti.com
SLVSBY9C – AUGUST 2013 – REVISED DECEMBER 2013
2.95-V to 6-V Input, 6-A Output, 2-MHz, Synchronous Step-Down SWIFT™ Switcher
Check for Samples: TPS54618-Q1
FEATURES
1
•2 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 H2
– Device CDM ESD Classification Level C4B
• Two 12-mΩ (Typical) MOSFETs for High
Efficiency at 6-A Loads
• 300-kHz to 2-MHz Switching Frequency
• 0.8-V ±1% Voltage Reference Overtemperature
(–40°C to 150°C)
• Synchronizes to External Clock
• Adjustable Slow Start and Sequencing
• UV and OV Power-Good Output
• Thermally Enhanced 3-mm × 3-mm 16-pin QFN
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
Figure 1. SIMPLIFIED SCHEMATIC
VIN
CI
VIN
C_BOOT
BOOT
R4
TPS54618-Q1
LO
EN
PH
R5
CO
PWRGD
VOUT
R1
VSENSE
SS/TR
R2
RT /CLK
COMP
GND
AGND
C ss
POWERPAD
RT
R3
C1
DESCRIPTION
The TPS54618RTE-Q1 SWIFT integrated circuit is a
full-featured 6-V, 6-A, synchronous step-down
current-mode converter with two integrated
MOSFETs.
The TPS54618RTE-Q1 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 TPS54618RTE-Q1 provides accurate regulation
for a variety of loads with an accurate ±1% voltage
reference (VREF) overtemperature.
The integrated 12-mΩ MOSFETs and 515-μA typical
supply current maximize efficiency. Using the enable
pin reduces the shutdown supply current to 5.5 µA
when the device enters shutdown mode.
The undervoltage lockout internal setting is 2.6 V, but
can be increased by programming the threshold with
a resistor network on the enable pin. The slow-start
pin controls the output-voltage start-up ramp. An
open-drain power-good signal indicates when the
output is within 93% to 107% of its nominal voltage.
Frequency foldback and thermal shutdown protect the
device during an overcurrent condition.
The SwitcherPro™ software tool, available at
www.ti.com/switcherpro, supports the TPS54618RTE-
Q1.
For more SWIFT^TM integrated-circuit documentation,
see the TI Web site at www.ti.com/swift.
100
95
90
85
80
75
70
65
60
55
50
0
3 Vin
5 Vin
f_s = 500kHz
Vout = 1.8V
1
2
3
4
5
6
I_O - Output Current - A
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.
SWIFT, SwitcherPro 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 © 2013, Texas Instruments Incorporated