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SLVS795B – OCTOBER 2008 – REVISED DECEMBER 2008
1.5-A, 60V STEP DOWN
SWIFT™ DC/DC CONVERTER WITH ECO-MODE™
1
FEATURES
•
3.5V to 60V Input Voltage Range
•
200-mΩ High-Side MOSFET
•
High Efficiency at Light Loads with a Pulse
Skipping Eco-Mode™
•
116µA Operating Quiescent Current
•
1.3µA Shutdown Current
•
300kHz to 2.5MHz Switching Frequency
•
Synchronizes to External Clock
•
Adjustable Slow Start/Sequencing
•
UV and OV Power Good Output
•
Adjustable UVLO Voltage and Hysteresis
2
•
•
•
•
0.8-V Internal Voltage Reference
MSOP10 Package With PowerPAD™
Supported by SwitcherPro™ Software Tool
For SWIFT™ Documentation, See the TI
Website at
APPLICATIONS
•
•
12-V, 24-V and 48-V Industrial and Commercial
Low Power Systems
Aftermarket Auto Accessories: Video, GPS,
Entertainment
DESCRIPTION
The TPS54160 device is a 60V, 1.5A, step down regulator with an integrated high side MOSFET. Current mode
control provides simple external compensation and flexible component selection. A low ripple pulse skip mode
reduces the no load, regulated output supply current to 116µA. Using the enable pin, shutdown supply current is
reduced to 1.3µA.
Under voltage lockout is internally set at 2.5V, but can be increased using the enable pin. The output voltage
startup ramp is controlled by the slow start pin that can also be configured for sequencing/tracking. An open
drain power good signal indicates the output is within 93% to 107% of its nominal voltage.
A wide switching frequency range allows efficiency and external component size to be optimized. Frequency fold
back and thermal shutdown protects the part during an overload condition.
The TPS54160 is available in 10 pin thermally enhanced MSOP Power Pad package.
SIMPLIFIED SCHEMATIC
EFFICIENCY
vs
LOAD CURRENT
90
85
80
VIN
PWRGD
TPS54160
EN
BOOT
PH
SS /TR
RT /CLK
COMP
VSENSE
Efficiency - %
75
70
65
60
55
50
0
0.25
0.50
V
I
= 12 V,
V
O
= 3.3 V,
f
sw
= 1200 kHz
0.75
1
1.25
Load Current - A
1.50
1.75
2
GND
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, SwitcherPro, SWIFT are trademarks of Texas Instruments.
Copyright © 2008, 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 ]
