ST STEVAL-A6983NV1 Manuals

Manuals and User Guides for ST STEVAL-A6983NV1. We have 1 ST STEVAL-A6983NV1 manual available for free PDF download: Getting Started

ST STEVAL-A6983NV1 Getting Started (52 pages)

synchronous step-down switching regulator evaluation board based on the A6983NQTR

Brand: ST | Category: Controller | Size: 15 MB

Figure 1. STEVAL-A6983NV1 Evaluation Board

1
1 Getting Started

2
- Figure 2. STEVAL-A6983NV1 Functional Block Diagram
  
  2
  - Table 1. Switching Frequency Settings
    
    3
  - Edesignsuite
    4
  - Settings
    4
  - VOUT Settings
    4
- Overview
  2
  - Features
    2
  - Block Diagram
    2
- Safety Precautions
  2
- Connectors and Test Points
  3
- Input EMI Filter
  3
- Switching Frequency Settings
  3
2 How to Use the Board

5
- Figure 3. STEVAL-A6983NV1 Schematic - Application 1
  
  6
- Oscilloscope Acquisitions for Application 1
  7
  - Power-Up from en
    7
3 Application 1: VOUT = 5 V, FSW = 400 Khz

6
- Figure 23. VIN = 38 V; V out = 5 V; IOUT MAX = 5.149 a
  7
- Figure 4. VIN = 6.5 V; V out = 5 V; IOUT = 2 a
  
  7
Figure 77. VIN = 24 V

7
Figure 31. VIN = 38 V

7
Figure 33. Power-Up from en

7
Figure 34. Power-Up from en

7
Vin = 24 V

8
- Figure 8. VIN = 6.5 V; VOUT = 5 V; IOUT = 2 a
  
  8
  - Figure 10. VIN = 24 V; VOUT = 5 V; IOUT = 2 a
    
    8
  - VOUT Ripple for no Load Operation
    9
- Power-Up from VIN
  8
- Vin = 12 V
  8
- Figure 48. VIN = 38 V
  9
- Figure 7. in = 38 V; V out = 5 V; IOUT = 2 a
  
  9
- Figure 74. VIN = 6.5 V
  9
- OUT , RIPPLE < 10 MV
  9
- VOUT Ripple for IOUT = 3 a
  10
  - Figure 67. VIN = 12 V
    
    11
  - Figure 20. VIN = 8.5 V
    
    11
  - Out Min = 4.849 a
    11
- Figure 22. VIN = 24 V
  
  11
- Figure 60. VIN = 38 V
  
  11
- Figure 9. in = 12 V; V out = 5 V; IOUT = 2 a
  
  11
- Figure 11. in = 38 V; V out = 5 V; IOUT = 2 a
  
  11
- Out = 5 V
  11
  - Out Min = 4.853 a
    11
- Figure 26. Power Losses over IOUT
  
  12
- Figure 25. Efficiency over IOUT Log Scale
  
  12
- Figure 24. Efficiency over IOUT
  
  12
- Figure 27. Load Regulation
  
  12
- Performance Curves
  12
- Thermal Acquisitions
  13
  - Out = 5 V
    13
    
    Vin = 24 V; V out = 5 V
    13
4 Application 2: VOUT = 3.3 V, FSW = 400 Khz

14
- Figure 32. STEVAL-A6983NV1 Schematic - Application 2
  
  14
  - Figure 58. in = 12 V
    
    15
    
    Figure 15. in = 38 V; V out out , RIPPLE < 10 MV
    15
    
    Figure 36. Power-Up from en
    15
    
    Figure 37. VIN = 6.5 V; VOUT = 3.3 V; IOUT = 3 a
    16
    
    Figure 38. VIN = 12 V; V out = 3.3 V; IOUT = 3 a
    16
    
    Figure 39. VIN = 24 V; VOUT = 3.3 V; IOUT = 3 a
    16
    
    Figure 40. VIN = 38 V; V out = 3.3 V; IOUT = 3 a
    16
    
    Figure 17. in = 12 V
    17
    
    Figure 19. in = 38 V
    17
    
    Figure 21. VIN = 12 V; V out = 5 V; IOUT MAX = 5.149 A; IOUT MIN = 4.857 a
    17
    
    Figure 28. in = 6.5 V
    17
    
    Figure 41. VIN = 6.5 V; V out = 3.3 V; no Load
    17
    
    Figure 42. VIN = 12 V; V out out , RIPPLE < 10 MV
    17
    
    Figure 43. VIN = 24 V; V out out , RIPPLE < 10 MV
    17
    
    OUT , RIPPLE < 10 MV
    17
    
    Out out
    17
    
    VOUT Ripple for no Load Operation
    17
    
    Figure 45. VIN = 6.5 V
    18
    
    Figure 47. VIN = 24 V
    18
    
    OUT , RIPPLE < 10 MV
    18
    
    OUT , RIPPLE < 15 MV
    18
    
    OUT , RIPPLE < 50 MV
    18
    
    OUT , RIPPLE < 8 MV
    18
    
    Vout = 3.3 V; Iout
    18
    
    VOUT Ripple for IOUT = 3 a
    18
    
    Figure 49. VIN = 6.5 V
    19
    
    Figure 51. in = 24 V
    19
    
    Figure 52. VIN = 38 V; VOUT = 5 V; I
    19
    
    Figure 53. Efficiency over IOUT
    20
    
    Figure 56. Load Regulation
    20
    
    Log Scale
    20
    
    Performance Curves
    20
    
    Figure 57. VIN = 6.5 V; VOUT
    21
    
    Figure 59. VIN = 24 V; VOUT
    21
    
    Out = 3.3 V
    21
    
    Thermal Acquisitions
    21
    
    Figure 61. STEVAL-A6983NV1 Schematic - Application 3
    22
    
    Out
    22
    
    Oscilloscope Acquisitions for Application 3
    23
    
    Power-Up from en
    23
  - In = 12 V
    15
  - In = 24 V
    15
  - In = 6.5 V
    15
    
    Out = 3.3 V; Iout = 3 a
    15
  - Figure 50. VIN = 12 V; VOUT = 5 V; I
    
    19
  - Load Transition
    19
- Figure 35. Power-Up from en
  
  15
- Oscilloscope Acquisitions for Application 2
  15
  - Power-Up from en
    15
- Power-Up from VIN
  16
5 Application 3: VOUT = 3.3 V, FSW = 2 Mhz

22
- Figure 94. Power-Up from en
  
  23
  - Figure 92. Power-Up from en
    
    23
    
    Figure 66. VIN = 6.5 V; VOUT = 3.3 V; I
    24
    
    Figure 68. VIN = 15.5 V; VOUT = 3.3 V; I
    24
    
    Figure 70. VIN = 6.5 V
    25
    
    Figure 71. in = 12 V
    25
    
    Figure 72. VIN = 15.5 V
    25
    
    Figure 73. VIN = 24 V; VOUT
    25
    
    Figure 80. VIN = 15.5 V
    25
    
    Figure 87. VIN = 12 V
    25
    
    Out = 2 A; Vout
    25
    
    V; no Load; VOUT , RIPPLE < 6 MV
    25
    
    Vout
    25
    
    Figure 76. VIN = 15.5 V
    26
    
    Vout out = 2 a
    26
    
    Figure 29. in = 12 V
    27
    
    Figure 79. VIN = 12 V; VOUT = 3.3 V
    27
    
    Figure 81. VIN = 24 V; VOUT = 3.3 V
    27
    
    Load Transition
    27
    
    Out Max = 3.406 a
    27
    
    Out Max = 3.407 a
    27
    
    Out Max = 3.426 a
    27
    
    Out Min
    27
    
    Figure 82. Efficiency over IOUT
    28
    
    Figure 83. Efficiency over IOUT
    28
    
    Figure 84. Power Losses over IOUT
    28
    
    Log Scale
    28
    
    Out out
    28
    
    Performance Curves
    28
    
    Figure 86. VIN = 6.5 V; VOUT
    29
    
    Figure 88. VIN = 15.5 V; VOUT
    29
    
    Thermal Acquisitions
    29
  - Figure 93. Power-Up from en
    
    23
  - Figure 69. VIN = 24 V
    
    24
  - Out = 2 a
    24
  - Power-Up from VIN
    24
- Figure 91. Power-Up from en
  
  23
- Figure 65. Power-Up from en
  
  23
- Out = 2 a
  23
  - Out
    23
  - V; Iout = 2 a
    23
6 Application 4: VOUT = 5 V, FSW = 2 Mhz

30
- Out
  30
- Oscilloscope Acquisitions for Application 4
  31
  - Power-Up from en
    31
    
    V; Vout = 5 V
    31
    
    Vout = 5 V
    31
  - Power-Up from VIN
    32
- Figure 97. VIN = 12 V; VOUT = 5 V; I
  
  32
- Figure 95. VIN = 6.5 V; VOUT = 5 V; I
  
  32
- Out = 2.5 a
  32
Vin = 12 V

33
Efficiency over IOUT Log Scale

36
Power Losses over IOUT

36
- In = 8.5 V
  37
  - Vin = 6.5 V
    37
Load Regulation

36
- Performance Curves
  36
  - Out
    36
- Figure 115
  
  37
- Out = 5 V
  37
- Thermal Acquisitions
  37
Vin = 8.5 V

37
- In = 12 V
  37
- In = 24 V
  37
Figure 117

37
7 PCB Layout

38
Figure 119. STEVAL-A6983CNV1 Evaluation Board - PCB Layout (Top Layer)

38
Figure 120. STEVAL-A6983CNV1 Evaluation Board - PCB Layout (Bottom Layer)

38
8 Stack-Up Layers

39
Figure 121. STEVAL-A6983CNV1 Stack-Up Layers

39
9 Schematic Diagrams

40
Figure 122. STEVAL-A6983NV1 Schematic Diagrams

40
Table 2. STEVAL-A6983NV1 Bill of Materials

41
10 Bill of Materials

41
Table 3. STEVAL-A6983NV1 Versions

43
11 Board Versions

43
12 Regulatory Compliance Information

44
- Table 4. Document Revision History
  
  45
- Table of Contents
  46
Revision History

45
List of Tables

48
List of Figures

49

ST Categories

Motherboard Computer Hardware Microcontrollers Control Unit Controller

More ST Manuals

ST STEVAL-A6983NV1 Manuals

ST STEVAL-A6983NV1 Getting Started (52 pages)

Table of Contents

Figure 1. STEVAL-A6983NV1 Evaluation Board

1 Getting Started

Figure 2. STEVAL-A6983NV1 Functional Block Diagram

Table 1. Switching Frequency Settings

2 How to Use the Board

Figure 3. STEVAL-A6983NV1 Schematic - Application 1

3 Application 1: VOUT = 5 V, FSW = 400 Khz

Figure 4. VIN = 6.5 V; V out = 5 V; IOUT = 2 a

Figure 77. VIN = 24 V

Figure 31. VIN = 38 V

Figure 33. Power-Up from en

Figure 34. Power-Up from en

Vin = 24 V

Figure 8. VIN = 6.5 V; VOUT = 5 V; IOUT = 2 a

Figure 10. VIN = 24 V; VOUT = 5 V; IOUT = 2 a

Figure 12. VIN = 6.5 V; V out = 5 V; no Load

Figure 46. VIN = 12 V

Figure 14. VIN = 24 V; V out out , RIPPLE < 10 MV

Figure 44. VIN = 38 V; V out out , RIPPLE < 10 MV

Figure 18. VIN = 24 V

Figure 7. in = 38 V; V out = 5 V; IOUT = 2 a

Figure 67. VIN = 12 V

Figure 20. VIN = 8.5 V

Figure 22. VIN = 24 V

Figure 60. VIN = 38 V

Figure 9. in = 12 V; V out = 5 V; IOUT = 2 a

Figure 11. in = 38 V; V out = 5 V; IOUT = 2 a

Figure 26. Power Losses over IOUT

Figure 25. Efficiency over IOUT Log Scale

Figure 24. Efficiency over IOUT

Figure 27. Load Regulation

4 Application 2: VOUT = 3.3 V, FSW = 400 Khz

Figure 32. STEVAL-A6983NV1 Schematic - Application 2

Figure 58. in = 12 V

Figure 50. VIN = 12 V; VOUT = 5 V; I

Figure 35. Power-Up from en

5 Application 3: VOUT = 3.3 V, FSW = 2 Mhz

Figure 94. Power-Up from en

Figure 92. Power-Up from en

Figure 93. Power-Up from en

Figure 69. VIN = 24 V

Figure 91. Power-Up from en

Figure 65. Power-Up from en

6 Application 4: VOUT = 5 V, FSW = 2 Mhz

Figure 97. VIN = 12 V; VOUT = 5 V; I

Figure 95. VIN = 6.5 V; VOUT = 5 V; I

Vin = 12 V

Figure 98. in = 24 V

Efficiency over IOUT Log Scale

Power Losses over IOUT

Load Regulation

Figure 115

Vin = 8.5 V

Figure 117

7 PCB Layout

Figure 119. STEVAL-A6983CNV1 Evaluation Board - PCB Layout (Top Layer)

Figure 120. STEVAL-A6983CNV1 Evaluation Board - PCB Layout (Bottom Layer)

8 Stack-Up Layers

Figure 121. STEVAL-A6983CNV1 Stack-Up Layers

9 Schematic Diagrams

Figure 122. STEVAL-A6983NV1 Schematic Diagrams

Table 2. STEVAL-A6983NV1 Bill of Materials

10 Bill of Materials

Table 3. STEVAL-A6983NV1 Versions

11 Board Versions

12 Regulatory Compliance Information

Table 4. Document Revision History

Revision History

List of Tables

List of Figures

Related Products

ST Categories