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User Manuals: ST VIPower VIPer22A-E Power Supply
Manuals and User Guides for ST VIPower VIPer22A-E Power Supply. We have
2
ST VIPower VIPer22A-E Power Supply manuals available for free PDF download: Application Note
ST VIPower VIPer22A-E Application Note (17 pages)
Designing a low cost power supply using a buck configuration
Brand:
ST
| Category:
Power Supply
| Size: 0 MB
Table of Contents
Figure 1. Evaluation Board (STEVAL-ISA035V1)
1
Table of Contents
2
1 Circuit Operation
4
Input Line Rectification and Line Conducted Filter
4
Start Circuit
4
Inductor Selection
5
Design Example
5
Design Hints and Trade-Off
5
Figure 2. Inductor Current: 470 Μh VS 1000 Μh
6
Figure 3. Schematic for 12 V at 350 Ma
7
Figure 4. Schematic for 16 V at 350 Ma
8
Board Layout
9
Figure 5. Composite
9
Figure 6. Top Side
9
Figure 7. Bottom Side and Surface Mount Components (Viewed from Top)
9
Burst Mode in No-Load or very Light Load
11
Figure 8. Bad Start
11
Figure 9. Good Start
11
Short Circuit
12
Figure 10. Burst Mode
12
Figure 11. Operation During a Short
12
Performance
13
Figure 12. Load Regulations for 12 V Output
14
Figure 13. Line Regulation
14
EMI Conducted
15
Figure 14. Efficiency
15
Figure 15. Viper22-E, 12 V at 350 Ma Output
15
Figure 16. Viper12-E, 12 V at 200 Ma Output
15
2 Conclusion
16
3 Revision History
16
Figure 17. Viper22-E, 16 V at 350 Ma Output
16
Figure 18. Viper12-E, 16 V at 200 Ma Output
16
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ST VIPower VIPer22A-E Application Note (17 pages)
Low-cost universal input DVD supply with the VIPer22A-E
Brand:
ST
| Category:
Motherboard
| Size: 0 MB
Table of Contents
Table of Contents
2
Application Description and Design
3
Schematics
3
Start-Up Phase
3
Auxiliary Supply
3
Burst Mode
3
Feedback Loop
3
Primary Driver
4
Transformer Consideration
4
Layout Recommendation
8
Experimental Results
9
Efficiency
9
Regulation
10
Transformer Specification
12
PCB Layout
13
Revision History
16
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