SLVA478C
October 2013 – November 2022
TPS62120
,
TPS62122
Using the TPS62120 in an Inverting Buck-Boost Topology
Trademarks
1
Inverting Buck-Boost Topology
1.1
Design Considerations
1.2
Concept
1.3
Output Current Calculations
1.4
VIN and VOUT Range
2
Digital Pin Configurations
2.1
Enable Pin
2.2
SGND Pin
2.3
Power Good Pin
3
Startup Behavior and Switching Node Consideration
4
External Component Selection
4.1
Inductor Selection
4.2
Input Capacitor Selection
4.3
Selecting L and COUT for Stability
5
Typical Performance and Waveforms
6
Conclusion
7
References
8
Revision History
2
Digital Pin Configurations