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TPS63070
SLVSC58B – JUNE 2016 – REVISED MARCH 2019
TPS63070 2-V to 16-V Buck-Boost Converter With 3.6-A Switch Current
1 Features
2 Applications
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Input Voltage Range: 2.0 V to 16 V
Output Voltage Range: 2.5 V to 9 V
Up to 95% Efficiency
+/- 1% dc accuracy in PWM mode
+3% / -1% dc accuracy in PFM mode
2 A Output Current in Buck Mode
2 A Output Current in Boost Mode
(VIN = 4 V; Vout = 5 V)
Precise ENABLE input allows
– user defined undervoltage lockout
– exact sequencing
Automatic Transition Between Step Down and
Boost Mode
Typical Device Quiescent Current: 50 μA
Fixed and Adjustable Output Voltage Options
Output Discharge Option
Power Save Mode for Improved Efficiency at Low
Output Power
Forced Fixed Frequency Operation at 2.4 MHz
and Synchronization Option
Power Good Output
VSEL simply allows output voltage change
Load Disconnect During Shutdown
Overtemperature Protection
Input / Output Overvoltage Protection
Available in QFN Package
3 Description
The TPS6307x is a high efficiency, low quiescent
current buck-boost converter suitable for applications
where the input voltage can be higher or lower than
the output voltage. Output currents can go as high as
2 A in boost mode and in buck mode. The buck-boost
converter is based on a fixed frequency, pulse-widthmodulation (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 converter can be disabled to minimize
battery drain. During shutdown, the load is
disconnected from the battery. The device is available
in a 2.5 mm x 3 mm QFN package.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS63070
VQFN
2.5 mm x 3 mm
TPS630701
VQFN
2.5 mm x 3 mm
TPS630702
VQFN
2.5 mm x 3 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic
Efficiency vs Output Current; Vo = 5 V
L
100%
1.5 µH
VIN = 2.0 V to 16 V
C1
10 µF
CIN
2x10 µF
0805
90%
L2
TPS63070
VOUT
VIN
FB
VSEL
FB2
VOUT = 2.5 V to 9 V
10 µF
0603
0603
R5
C4
R1
COUT
3x22 µF
0805
R4
R2 100 kΩ
10 kΩ
EN
PS/SYNC
CVAUX
VAUX
PG
80%
70%
Efficiency
L1
Dual Li-Ion Applications
Industrial Metering Equipment
DSC's and Camcorders
Notebook Computers
Ultra Mobile PC's and Mobile Internet Devices
Personal Medical Products
60%
50%
40%
3V
4.2 V
5V
7V
9V
12 V
30%
PGND
20%
GND
10%
100 nF
Copyright © 2016, Texas Instruments Incorporated
0
100P
1m
10m
100m
Output Current (A)
1
2
D001
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.
TPS63070
SLVSC58B – JUNE 2016 – REVISED MARCH 2019
www.ti.com
Table of Contents
1
2
3
4
5
6
7
8
Features ..................................................................
Applications ...........................................................
Description .............................................................
Revision History.....................................................
Device Comparison Table.....................................
Pin Configuration and Functions .........................
Specifications.........................................................
1
1
1
2
3
3
4
7.1
7.2
7.3
7.4
7.5
7.6
4
4
4
5
6
8
Absolute Maximum Ratings ......................................
ESD Ratings ............................................................
Recommended Operating Conditions.......................
Thermal Information .................................................
Electrical Characteristics...........................................
Typical Characteristics ..............................................
Detailed Description .............................................. 9
8.1
8.2
8.3
8.4
8.5
Overview ................................................................... 9
Functional Block Diagram TPS63070 ....................... 9
Functional Block Diagram TPS630701 ................... 10
Feature Description................................................. 10
Device Functional Modes........................................ 14
9
Application and Implementation ........................ 16
9.1 Application Information............................................ 16
9.2 Typical Application for adjustable version .............. 16
9.3 Typical Application for Fixed Voltage Version ....... 26
10 Power Supply Recommendations ..................... 31
10.1 Thermal Information .............................................. 31
11 Layout................................................................... 32
11.1 Layout Guidelines ................................................. 32
11.2 Layout Example .................................................... 32
12 Device and Documentation Support ................. 33
12.1
12.2
12.3
12.4
12.5
12.6
12.7
Device Support ....................................................
Related Links ........................................................
Receiving Notification of Documentation Updates
Community Resources..........................................
Trademarks ...........................................................
Electrostatic Discharge Caution ............................
Glossary ................................................................
33
33
33
33
33
33
33
13 Mechanical, Packaging, and Orderable
Information ........................................................... 34
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision A (August 2016) to Revision B
Page
•
Added Various minor editorial updates and corrections......................................................................................................... 1
•
Added TPS630702 Variant..................................................................................................................................................... 1
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Added TPS630702 Variant with "output discharge=on" option .............................................................................................. 3
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Added TPS630702 VOUT info ............................................................................................................................................... 7
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Added TPS630702 VFB info at 3 instances ........................................................................................................................... 7
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Added Parameter Name ROD to output discharge resistance row........................................................................................ 7
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Added Link to TechNote SLVAE62 ...................................................................................................................................... 13
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Added more descriptive text for better understanding.......................................................................................................... 15
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Changed Description of Discharge Feature, reflecting TPS630702..................................................................................... 15
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Changed description of output voltage programming to match EC table............................................................................. 17
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Added table of content for application curves ...................................................................................................................... 20
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Added TPS630702 Variant................................................................................................................................................... 33
Changes from Original (June 2016) to Revision A
•
2
Page
Added full Production Data .................................................................................................................................................... 1
Submit Documentation Feedback
Copyright © 2016–2019, Texas Instruments Incorporated
Product Folder Links: TPS63070
TPS63070
www.ti.com
SLVSC58B – JUNE 2016 – REVISED MARCH 2019
5 Device Comparison Table
Device Number
Features
Output Voltage
Marking
TPS63070
output discharge = off
adjustable
3070
TPS630701
output discharge = off
fixed 5 V
0701
TPS630702
output discharge = on
adjustable
0702
6 Pin Configuration and Functions
QFN PACKAGE
Bottom View
Top View
6 FB2
FB2
FB
5
4
3
2
1
PS/S
VAUX
FB
14
10
PG
PG
4 5
11
9
6
VAUX
3
13
GND
2
GND
1
12 VIN
7
10
15
8
L1
9
11
14
PS/S
VSEL
VOUT
7
13
EN
VOUT
PGND
8
L2
L2
PGND
L1
VIN 12
15
EN
VSEL
Pin Functions
PIN
NAME
NO.
I/O
DESCRIPTION
EN
14
I
Enable input. Pull high to enable the device, pull low to disable the device.
FB
5
I
Voltage feedback of adjustable versions, must be connected to VOUT on fixed output voltage
versions
GND
4
L1
11
I
Connection for Inductor
L2
9
I
Connection for Inductor
PS/SYNC
1
I
Pull to low for forced PWM, pull high for PWM/PFM (power save) mode. Apply a clock signal to
synchronize to an external frequency.
PG
2
O
Open drain power good output
PGND
VIN
Control / logic ground
10
Power ground
12, 13
I
Supply voltage for power stage
7,8
O
Buck-boost converter output
VAUX
3
O
Connection for Capacitor of internal voltage regulator. This pin must not be loaded externally.
VSEL
15
I
Voltage scaling input. A high level on this pin enables a transistor which pulls pin FB2 to GND.
FB2
6
O
Voltage scaling output. Connect a resistor from FB to FB2 to change the voltage divider ratio on the
feedback pin. A logic high level on VSEL will change the output voltage to a higher value. Leave the
pin open or connect to GND if not used.
VOUT
Submit Documentation Feedback
Copyright © 2016–2019, Texas Instruments Incorporated
Product Folder Links: TPS63070
3
TPS63070
SLVSC58B – JUNE 2016 – REVISED MARCH 2019
www.ti.com
7 Specifications
7.1 Absolute Maximum Ratings
over operating junction temperature range (unless otherwise noted)
(1)
MIN
MAX
UNIT
VIN, PS/SYNC, EN, VSEL
–0.3
20
V
L1
–0.3
20
V
–3
25
V
–0.3
12
V
L1 (transient for t
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