TPS63020-Q1_16 Datasheet, PDF (1/28 Pages) Texas Instruments – Q1 High Efficiency Single Inductor Buck-Boost Converter

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TPS63020-Q1
SLVSD52A – OCTOBER 2015 – REVISED JANUARY 2016
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 C4A
• 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
V_IN
2.5 V to 5.5 V
C₁
2X10 µF
C₃
0.1 µF
L₁ 1 µH
L1
L2
VIN
VOUT
VINA
FB
EN
PS/SYNC
PG
GND
PGND
TPS63020-Q1
R₁
1 MΩ
R₂
180 kΩ
V_OUT
3.3 V 2 A
R₃
1 MΩ
C₂
4X22 µF
Power Good
Output
100
90
80
70
60
50
40
30
20
10
0
100 µ
Efficiency vs Output Current
VIN = 1.8V, VOUT = 2.5V
VIN = 3.6V, VOUT = 2.5V
VIN = 2.4V, VOUT = 4.5V
VIN = 3.6V, VOUT = 4.5V
TPS63020-Q1, Power Save Enabled
1m
10 m
100 m
Output Current (A)
1
4
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.