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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 (VIN > 3.6 V) • More than 2 A Output Current at 3.3 V in Boost Mode (VIN > 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 onecell 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
VIN 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
VOUT 3.3 V 2 A
R3 1 MΩ
C2 4X22 µF
Power Good Output
Efficiency (%)
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)
14
1
An IMPORTANT NOTICE at the end of th.