TPS54360 Datasheet, PDF (1/10 Pages) Texas Instruments – 60 V Input, 3.5 A, Step Down Converter with Eco-mode™

TPS54360
www.ti.com
SLVSBB4 – AUGUST 2012
60 V Input, 3.5 A, Step Down Converter with Eco-mode™
Check for Samples: TPS54360
FEATURES
1
•2 4.5 V to 60 V (65 V Abs Max) Input Range
• Current Mode Control Converter
• 92-mΩ High-Side MOSFET
• High Efficiency at Light Loads with a Pulse
Skipping Eco-mode™
• 146 μA Operating Quiescent Current
• 1 μA Shutdown Current
• 100 kHz to 2.5 MHz Fixed Switching Frequency
• Synchronizes to External Clock
• Adjustable UVLO Voltage and Hysteresis
• Internal Soft-Start
• Accurate Cycle-by-Cycle Current Limit,
Thermal, OVP, and Frequency Foldback
Protection
• 0.8-V 1% Internal Voltage Reference
• 8-Pin HSOIC with PowerPAD™ Package
• –40°C to 150°C T_J Operating Range
• Supported by WEBENCH™ Software Tool
APPLICATIONS
• 12-V, 24-V and 48-V Industrial, Automotive and
Communications Power Systems
DESCRIPTION
The TPS54360 is a 60 V, 3.5 A, 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 supply current to 146 μA. Shutdown supply current is reduced to 1 μA when the enable pin is pulled
low.
Under voltage lockout is internally set at 4.3 V, but can be increased using the enable pin. The output voltage
startup ramp is internally controlled to allow a controlled start-up and eliminate overshoot.
A wide switching frequency range allows either efficiency or external component size to be optimized. Frequency
foldback and thermal shutdown protects internal and external components during an overload condition.
The TPS54360 is available in an 8-pin thermally enhanced HSOIC PowerPAD™ package.
SPACER
V_IN
SIMPLIFIED SCHEMATIC
VIN
TPS54360
EN
BOOT
RT/CLK ^SW
100
90
80
70
60
V_OUT
50
40
EFFICIENCY vs LOAD CURRENT
V_IN = 12V
30
COMP
FB
GND
R1
20
10
0
V_OUT = 5V, fsw = 600 kHz
V_OUT = 3.3V, fsw = 300 kHz
0
0.5 1.0
1.5 2.0 2.5
3.0 3.5 4.0
R3
I_O - Output Current - A
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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.
2
PRODUCT PREVIEW information concerns products in the
formative or design phase of development. Characteristic data and
other specifications are design goals. Texas Instruments reserves
the right to change or discontinue these products without notice.
Copyright © 2012, Texas Instruments Incorporated