TPS54010_16 Datasheet, PDF (1/30 Pages) Texas Instruments – 2.2 – 4 -V, 14-A OUTPUT SYNCHRONOUS BUCK PWM SWITCHER WITH INTEGRATED FETs

Typical Size
6,4 mm X 9,7 mm
TPS54010
www.ti.com
SLVS509B – MAY 2004 – REVISED JUNE 2005
2.2 – 4 -V, 14-A OUTPUT SYNCHRONOUS BUCK PWM SWITCHER
WITH INTEGRATED FETs (SWIFT™)
FEATURES
• Separate Low-Voltage Power Bus
• 8-mΩ MOSFET Switches for High Efficiency at
14-A Continuous Output
• Adjustable Output Voltage Down to 0.9 V
• Externally Compensated With 1% Internal
Reference Accuracy
• Fast Transient Response
• Wide PWM Frequency: Adjustable 280 kHz to
700 kHz
• Load Protected by Peak Current Limit and
Thermal Shutdown
• Integrated Solution Reduces Board Area and
Total Cost
• SWIFT Documentation, Application Notes, and
Design Software: www.ti.com/swift
DESCRIPTION
As a member of the SWIFT™ family of dc/dc regu-
lators, the TPS54010 low-input voltage, high-output
current synchronous buck PWM converter integrates
all required active components. Included on the
substrate with the listed features are a true, high-
performance, voltage error amplifier that enables
maximum performance under transient conditions
and flexibility in choosing the output filter L and C
components; an undervoltage-lockout circuit to pre-
vent start-up until the VIN input voltage reaches 3 V;
an internally and externally set slowstart circuit to limit
in-rush currents; and a power-good output useful for
processor/logic reset, fault signaling, and supply se-
quencing.
The TPS54010 is available in a thermally enhanced
28-pin TSSOP (PWP) PowerPAD™ package, which
eliminates bulky heatsinks.
APPLICATIONS
• Low-Voltage, High-Density Systems With
Power Distributed at 2.5 V, 3.3 V Available
• Point of Load Regulation for High-
Performance DSPs, FPGAs, ASICs, and
Microprocessors
• Broadband, Networking, and Optical
Communications Infrastructure
SIMPLIFIED SCHEMATIC
2.5 V or 3.3 V
Input1
350 mF
PVIN
PH
TPS54010
BOOT
Input2
3.3 V
VIN
PGND
COMP
0.68 mH
0.047 mF 200 mF 0.1 mF
120 pF
1 mF
VBIAS
4.64 kW
10 kW
Output
AGND ^VSENSE
3300 pF
422 W
1 mF
14.7 kW
1500 pF
Compensation
Network
100
95
90
85
80
75
70
65
60
55
50
0
EFFICIENCY
vs
OUTPUT CURRENT
VIN = 3.3 V,
PVIN = 2.5 V,
V_O = 1.5 V,
f_s= 700 kHz
2 4 6 8 10 12 14 16
I_O − Output Current − A
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, PowerPAD are trademarks of Texas Instruments.
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 © 2004–2005, Texas Instruments Incorporated