TPS63024 Datasheet, PDF (1/29 Pages) Texas Instruments – High Current, High Efficiency Single Inductor Buck-Boost Converter

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TPS63024
TPS630241, TPS630242
SLVSCK8A – NOVEMBER 2014 – REVISED DECEMBER 2014
TPS63024x 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
• 2.3V to 5.5V input voltage range
• 1.5A Continuous Output Current : V_IN≥ 2.5V,
V_OUT= 3.3V
• Adjustable and fixed output voltage
• Efficiency up to 95% in Buck or Boost mode and
up to 97% when V_IN=V_OUT
• 2.5MHz typical switching frequency
• 35μA 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 1.766 mm x 2.086mm, 20-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 TPS63024 are 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 1.5A in
boost mode and as high as 3A in buck mode. The
maximum average current in the switches is limited to
a typical value of 3A. The TPS63024 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 2.5MHz 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 20-pin WCSP package measuring
1.766 mm x 2.086mm.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS63024
TPS630241
DSBGA (20)
1.766 mm × 2.086 mm
TPS630242
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Typical Application
.
.
L₁ 1µH
V_IN
2.5 V to 5.5 V
C₁
10µF
TPS63024
L1
L2
VIN
VOUT
EN
FB
VINA
GND
PFM/
PWM
PGND
1
V_OUT
3.3 V up to 1.5A
C₂
2X22µF
Efficiency vs Output Current
100
95
90
85
80
75
70
65
60
55
50 _TPS630242
45
100µ
1m
V_IN = 2.8V, V_OUT = 3.3V
V_IN = 3.3V, V_OUT = 3.3V
V_IN = 3.6V, V_OUT = 3.3V
V_IN = 4.2V, V_OUT = 3.3V
10m
100m
1 1.5
Output Current (A)
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.