TPS63020-Q1_15 Datasheet, PDF (1/24 Pages) Texas Instruments – TPS63020-Q1 High Efficiency Single Inductor Buck-Boost Converter With 4-A Switches

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TPS63020-Q1
SLVSD52 – OCTOBER 2015
TPS63020-Q1 High Efficiency Single Inductor Buck-Boost Converter With 4-A Switches
1 Features
•1 Qualified for Automotive Applications
• AEC-Q100 Qualified with the Following Results:
– Device Temperature Grade: –40°C to 125°C
Operating Junction Temperature Range
– Device HBM ESD Classification Level H1B
– Device CDM ESD Classification Level C4B
• Input Voltage Range: 1.8 V to 5.5 V
• Up to 96% Efficiency
• 3 A Output Current at 3.3 V in Step Down Mode
(V_IN > 3.6 V)
• More than 2 A Output Current at 3.3 V in Boost
Mode (V_IN > 2.5 V)
• Automatic Transition Between Step Down and
Boost Mode
• Dynamic Input Current Limit
• Device Quiescent Current less than 50 μA
• Adjustable Output Voltage Range from 1.2 V to
5.5 V
• Power Save Mode for Improved Efficiency at Low
Output Power
• Forced Fixed Frequency Operation at 2.4 MHz
and Synchronization Possible
• Smart Power Good Output
• Load Disconnect During Shutdown
• Overtemperature Protection
• Overvoltage Protection
• Available in a 3-mm × 4-mm, VSON-14 Package
2 Applications
• Infotainment
• Telematics/eCall
3 Description
The TPS63020-Q1 device provides a power supply
solution for products powered by either a two-cell or
three-cell alkaline, NiCd or NiMH battery, or a one-
cell Li-Ion or Li-Polymer battery. Output currents can
go as high as 3 A while using a single-cell Li-Ion or
Li-Polymer battery, and discharge it down to 2.5 V or
lower. The buck-boost converter is based on a fixed
frequency, pulse width modulation (PWM) controller
using synchronous rectification to obtain maximum
efficiency. At low load currents, the converter enters
power save mode to maintain high efficiency over a
wide load current range. The power save mode can
be disabled, forcing the converter to operate at a
fixed switching frequency. The maximum average
current in the switches is limited to a typical value of
4 A. The output voltage is programmable using an
external resistor divider. The converter can be
disabled to minimize battery drain. During shutdown,
the load is disconnected from the battery. The device
is packaged in a 3 mm × 4 mm 14-pin VSON
PowerPAD™ package (DSJ).
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS63020-Q1
VSON (14)
3.00 mm x 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
4 Typical Application Schematic
L₁ 1µH
Efficiency vs Output Current
V_IN
2.5 V to 5.5V
C₁
2X10µF
C₃
0.1µF
L1
L2
VIN
VOUT
VINA
FB
EN
PS/SYNC
PG
GND
PGND
TPS63020
R₁
1MΩ
R₂
180kΩ
V_OUT
3.3V2A
R₃
1MΩ
C₂
4X22µF
Power Good
Output
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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.