ST STEVAL-A6983IV1 Manuals

Manuals and User Guides for ST STEVAL-A6983IV1. We have 1 ST STEVAL-A6983IV1 manual available for free PDF download: User Manual

ST STEVAL-A6983IV1 User Manual (28 pages)

evaluation board based on A6983I, 38 V, 10 W synchronous iso-buck converter for isolated applications

Brand: ST | Category: Motherboard | Size: 5 MB

Figure 1. STEVAL-A6983I
1
Getting Started
2
Safety Instructions
2
Functional Block Diagram
2
Features
2
Figure 2. STEVAL-A6983I Block Diagram
2
How to Use the Board
3
Figure 3. STEVAL-A6983IV1 Basic Testing Setup
3
Connectors and Test Points
4
VIN - Tpxx
4
GND1 and GND Prim - Tpxx and Tpxxx
4
VOUT1 - Tpxx
4
EN/SYNCH - Tpxx
4
PGOOD - Tpxx
4
VOUT Iso - Tpxx
4
GND Iso - Tpxx
4
VISO+, VISO- and Viso_Gnd - Tpxx
4
STEVAL-A6983IV1 Layout
5
Figure 4. PCB Layout (Top)
5
Figure 5. PCB Layout (Bottom)
5
STEVAL-A6983IV1 Performance and Waveforms
6
Figure 6. Efficiency at Different VIN, F SW = 400 Khz
6
Figure 7. Efficiency Vs F SW
6
Figure 8. Efficiency Vs F SW
6
Figure 9. Efficiency Vs F SW
6
Figure 10. Load Regulation at Different VIN , F SW = 400 Khz
6
Figure 11. Load Regulation Vs F SW
6
Figure 12. Load Regulation Vs F SW , VIN = 18 V
7
Figure 13. Load Regulation Vs F SW
7
Figure 14. VIN = 12 V, F SW = 400 Khz, Ioutiso = 450 Ma
7
Figure 15. VIN = 12 V, F SW = 200 Khz, Ioutiso = 600 Ma
7
Figure 16. VIN = 24 V, F SW = 400 Khz, Ioutiso = 750 Ma
7
Figure 17. VIN = 24 V, F SW = 200 Khz, Ioutiso = 700 Ma
7
Input EMI Filter
8
STEVAL-A6983IV1 EMC Compliance
9
Table 1. List of Standards Which the STEVAL-A6983IV1 Complies with
9
Table 2. Capacitor Used to Achieve the Compliance
9
Figure 18. Capacitor Connection at the Bottom of STEVAL-A6983IV1 for EMC Compliance
9
Figure 19. Conducted EMC Test Results of the STEVAL-A6983IV1
10
Figure 20. Radiated EMC Test Results of the STEVAL-A6983IV1 (Horizontal on the Left, Vertical on the Right)
10
Disclaimer
11
Board Setting Capability
12
Table 3. Switching Frequency and Dithering Setting
12
Figure 21. Resistors on the PCB Used to Set the Switching Frequency and the Dithering
12
Figure 22. Resistors Enable for Thresholds Setting
13
Figure 23. Resistors of the Primary Output Divider
14
Edesignsuite
15
Application Idea
16
Post Regulation Circuitry
16
Transformer Optimization Example
16
Table 4. Post Regulation Options for Various Applications
16
Table 5. Comparison between STEVAL-A6983IV1 BOM and Optimized Solution for VIN = 24 V
16
Table 6. Main Parameters of the Transformer ZD2087-AE
17
Figure 24. Efficiency Vs F SW , VIN = 24 V
17
Figure 25. Load Regulation Vs F SW
17
Figure 26. VIN = 24 V, F SW = 400 Khz, Ioutiso = 750 Ma
17
Figure 27. VIN = 24 V, F SW = 200 Khz, Ioutiso = 1 a
17
Thermal Performance
18
Figure 28. VIN = 12 V, F SW = 400 Khz, Ioutiso = 450 Ma (Hotspot Around 74°C)
18
Figure 29. VIN = 24V, F SW = 400 Khz, Ioutiso = 750 Ma
18
Schematic Diagrams
19
Figure 30. STEVAL-A6983IV1 Circuit Schematic
19
Bill of Materials
20
Table 7. STEVAL-A6983IV1 Bill of Materials
20
Table 8. Main Parameters of the Transformer ZB1346-BE
21
Board Versions
22
Table 9. STEVAL-A6983IV1 Versions
22
Regulatory Compliance Information
23
Revision History
24
Table 10. Document Revision History
24
Table of Contents
25
List of Tables
26
List of Figures
27
Disclaimer
28

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