Datasheet

VIN
EN
SLEEP
NC
AGND
SW
VOS
PG
FB
PGND
10µH
2.2uF
R2
R1
47uF
TPS62175
100k
VIN
-VOUT
TPS62177
VIN
EN
NC
AGND
PGND
SW
VOS
PG
SLEEP
FB
4.75 to 28 V
10µH
22µF
2.2µF
100k
Tiva C Series MCU
VBAT
VDD
VDDA
HIB
2x0.01µF4x0.1µF2x1µF
0.1µF1µF
ETP
Decoupling Caps
3.3V
Lithium Battery
0.1µF
TPS62175, TPS62177
SLVSB35B –OCTOBER 2012–REVISED JANUARY 2014 www.ti.com
Application Examples
spacingspacing
Micro Controller Power Supply
The TPS6215/7 can be used advantageously as the power supply rail for micro-controllers with low current
power save modes. Figure 62 shows the connection of TPS62177 to the Tiva C Series TM4C123x ARM
Cortex™ - M4 MCUs (TM4C123x MCUs), using its Hibernate Mode signal to control Sleep Mode operation. More
information is found in the Application Report SPMA066.
spacing
Figure 62. Micro-Controller Power Supply with Sleep Mode
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Inverting Power Supply
The TPS62175/7 can be used as inverting power supply by rearranging external circuitry as shown in Figure 63.
As the former GND node now represents a voltage level below system ground, the voltage difference between
V
IN
and V
OUT
has to be limited to the maximum operating voltage of 28V.
spacingspacing
Figure 63. Inverting Buck-Boost Converter
spacingspacing
More information about using TPS62175 as inverting buck-boost converter can be found in the Application Note
SLVA542.
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