TPS63027 Datasheet, PDF (1/23 Pages) Texas Instruments – High Current, High Efficiency Single Inductor Buck-Boost Converter

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TPS63027
SLVSDK8 – DECEMBER 2016
TPS63027 High Current, High Efficiency Single Inductor Buck-Boost Converter
1 Features
•1 Real Buck or Boost Operation with Automatic and
Seamless Transition Between Buck and Boost
Operation
• 2.3 V to 5.5 V Input Voltage Range
• 1.0V to 5.5V Output Voltage Range
• 2 A Continuous Output Current : V_IN≥ 2.5 V,
V_OUT= 3.5 V
• Efficiency up to 96%
• 2.5MHz Typical Switching Frequency
• 35-μA Operating Quiescent Current
• Integrated Soft Start
• Power Save Mode
• True Shutdown Function
• Output Capacitor Discharge Function
• Over-Temperature Protection and Over-Current
Protection
• Wide Capacitance Selection
• Small 2.1 mm x 2.1 mm, 25-pin WCSP
2 Applications
• Cellular Phones, Smart Phones
• Tablets PC
• PC and Smart Phone accessories
• Point of Load Regulation
• Battery Powered Applications
3 Description
The TPS63027 is a high efficiency, low quiescent
current buck-boost converters suitable for application
where the input voltage is higher or lower than the
output. Output currents can go as high as 2 A in
boost mode and as high as 4 A in buck mode. The
maximum average current in the switches is limited to
a typical value of 4.5 A. The TPS63027 regulates the
output voltage over the complete input voltage range
by automatically switching between buck or boost
mode depending on the input voltage ensuring a
seamless transition between modes. The buck-boost
converter is based on a fixed frequency, pulse-width-
modulation (PWM) controller using synchronous
rectification to obtain highest efficiency. At low load
currents, the converter enters Power Save Mode to
maintain high efficiency over the complete load
current range. There is a PFM/PWM pin that allows
the user to choose between automatic PFM/PWM
mode operation and forced PWM operation. During
PWM mode a fixed-frequency of typically 2.5 MHz is
used. The output voltage is programmable using an
external resistor divider, or is fixed internally on the
chip. The converter can be disabled to minimize
battery drain. During shutdown, the load is
disconnected from the battery. The device is
packaged in a 25-pin WCSP package measuring 2.1
mm x 2.1 mm.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS63027
DSBGA (25)
2.1 mm × 2.1 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Typical Application
sp
1uH
Efficiency vs Output Current
V_IN
2.3V - 5.5V
10µF
L1
L2
VIN
VOUT
AVIN
EN
FB
MODE
GND
AGND
TPS63027
V_OUT
up to 5.5V / 2A
2x
22µF
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.