SLVSBN0 – MARCH 2013
4.5 V to 60 V Input, 5 A, Step Down DC-DC Converter with Eco-mode™
Check for Samples:
1
FEATURES
•
High Efficiency at Light Loads with Pulse
Skipping Eco-mode™
92-mΩ High-Side MOSFET
146
μA
Operating Quiescent Current and
2
μA
Shutdown Current
100 kHz to 2.5 MHz Fixed Switching Frequency
Synchronizes to External Clock
Low Dropout at Light Loads with Integrated
BOOT Recharge FET
Adjustable UVLO Voltage and Hysteresis
0.8 V 1% Internal Voltage Reference
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8-Pin HSOIC with PowerPAD™ Package
–40°C to 150°C T
J
Operating Range
Supported by WEBENCH™ Software Tool
2
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APPLICATIONS
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•
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Industrial Automation and Motor Control
Vehicle Accessories: GPS, Entertainment
USB Dedicated Charging Ports and Battery
Chargers
12 V, 24 V and 48 V Industrial, Automotive and
Communications Power Systems
DESCRIPTION
The TPS54560 is a 60 V, 5 A, step down regulator with an integrated high side MOSFET. The device survives
load dump pulses up to 65V per ISO 7637. Current mode control provides simple external compensation and
flexible component selection. A low ripple pulse skip mode reduces the no load supply current to 146
μA.
Shutdown supply current is reduced to 2
μA
when the enable pin is pulled low.
Undervoltage lockout is internally set at 4.3 V but can be increased using the enable pin. The output voltage start
up ramp is internally controlled to provide a controlled start up and eliminate overshoot.
A wide switching frequency range allows either efficiency or external component size to be optimized. Output
current is limited cycle-by-cycle. Frequency foldback and thermal shutdown protects internal and external
components during an overload condition.
The TPS54560 is available in an 8-pin thermally enhanced HSOIC PowerPAD™ package.
SIMPLIFIED SCHEMATIC
EFFICIENCY vs LOAD CURRENT
100
36 V to 12 V
95
90
Efficiency (%)
V
IN
VIN
BOOT
TPS54560
EN
COMP
RT/CLK
SW
V
OUT
85
80
75
70
12 V to 3.3 V
12 V to 5 V
FB
GND
65
60
0
0.5
1
V
OUT
= 12 V,
fsw
= 800kHz,
V
OUT
= 5 V and 3.3 V,
f
sw = 400 kHz
1.5
2
2.5
3
3.5
4
4.5
5
C024
I
O
- Output Current (A)
1
2
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.
Eco-mode, PowerPAD, WEBENCH are trademarks of Texas Instruments.
Copyright © 2013, Texas Instruments Incorporated
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.
TI [ TEXAS INSTRUMENTS ]
