SLVAFH1A December 2022 – December 2023 TPS62933 , TPS62933F , TPS62933O , TPS62933P
- 1
- Create an Inverting Power Supply Using a TPS6293x Buck Converter With Internal Compensation
- Trademarks
- 1Configuring the Buck Converter for Inverting Buck-Boost Topology Application
- 2Choosing the Correct Buck Converter for Inverting Power Application
- 3Selecting Applicable External Components for Inverting Power Application
- 4Experimental Results
- 5Summary
- 6References
- 7Revision History
4 Experimental Results
The design shown in Figure 3-1 was used to generate –12-V output from 12-V input. Figure 4-1 shows the set up used to test the board. Figure 4-2 to Figure 4-5 show some typical measured waveforms of this design. The details can be found in TI reference design 8-V to 16-V Input, 1.2-A, –12-V Inverting Power Supply Reference Design.
Figure 4-1 Test Setup
Figure 4-2 Start-up Behavior
Figure 4-4 Load Transient 0.8 A to
1.2 A With 12 VIN
Figure 4-3 Load Transient 0.4 A to
1.2 A With 12 VIN
Figure 4-5 VOUT Ripple at
1.2 A