ST STEVAL-SCR002V1 Manuals

Manuals and User Guides for ST STEVAL-SCR002V1. We have 1 ST STEVAL-SCR002V1 manual available for free PDF download: User Manual

ST STEVAL-SCR002V1 User Manual (28 pages)

Getting started with the STEVAL-SCR002V1 SCR based inrush current limiter board with non-isolated gate driver

Brand: ST | Category: Computer Hardware | Size: 6 MB

Figure 1. STEVAL-SCR002V1 Evaluation Board
1
Getting Started
2
Safety Precautions
2
Features
3
Circuit and Purpose
3
Connection and Startup
4
Figure 2. STEVAL-SCR002V1: Circuit Simplified Schematic
4
Figure 3. STEVAL-SCR002V1 Components
4
Figure 4. Connection Example of the STEVAL-SCR002V1 to a Boost Converter (PFC) - Relay Replacement
5
Operation
6
Startup
6
Figure 5. Typical Schematic of a Power Converter Using Relay Bypass
6
Figure 6. Schematic of the STEVAL-SCR002V1 Connected to PFC
6
Steady State
7
SCR Gate Driver with Automatic Switching Operation
7
Figure 7. Startup Phase - PFC Bulk Capacitor Precharge (en = 0 V)
7
Figure 8. Steady State - PFC On, Bypass on
7
Figure 9. Example of SCR Leakage Current (Tj = 125°C)
8
Figure 10. SCR Gate Driver Operation
8
Performance
9
Power Efficiency
9
Figure 11. STEVAL-SCR002V1 Performance Test Configuration
9
Figure 12. 1500 W PSU Comparative Efficiency Test Results (VAC = 230 V/50 Hz; T Amb = 25°C)
9
Conducted EMI Noise
10
EMC Immunity
10
Table 1. IEC61000-4-4 Test Results for the STEVAL-SCR002V1
10
Figure 13. EN55014 Standard Validation (Average Measurement) - VAC = 230 V/50 Hz, P = 1000 W
10
Figure 14. Test Schematic and Waveform Specification for IEC61000-4-4
10
Surge Robustness
11
Figure 15. IEC61000-4-5 Surge Test Configuration
11
Figure 16. Waveforms Resulting from the 2 Kv IEC61000-4-5 Test (a Configuration)
11
Figure 17. Waveforms Resulting from the 2 Kv IEC61000-4-5 Test (B Configuration)
12
Figure 18. Waveforms Resulting from the 2 Kv IEC61000-4-5 Test (C and D Configurations)
12
Thermal Management
13
Dissipated Power
13
Table 2. Static Electrical Characteristics
13
Table 3. Thermal Resistance
13
Figure 19. SCR Current Waveform
13
Temperature Measurements
14
Table 4. Maximum Case Temperatures for SCR and Bridge Diode
14
Figure 20. Junction Temperature Calculation
14
Board Possible Modifications
15
Gate Resistors
15
Table 5. Operation with Original Gate Resistor Fixed Values
15
Table 6. Operation with Gate Resistor Values Adapted to Fit Ig = 35 Ma
15
PWM Driver Control
16
Soft Start Solution
16
Figure 21. PWM Driver Control Diagram
16
Figure 22. Low Side ICL Topology as a Mixed Bridge
16
Figure 23. Mixed Bridge Soft Start Principle and Waveform
16
BOM Reduction
17
Figure 24. Low Side Diode Removal Influence on PFC Output Cap Charge Time
17
Topology Sum-Up
18
Board Layout
19
Figure 25. STEVAL-SCR002V1 Top Side Layout
19
Figure 26. STEVAL-SCR002V1 Bottom Side Layout
19
Schematic Diagrams
20
Figure 27. STEVAL- SRC002V1 Circuit Schematic
20
Bill of Materials
21
Board Versions
22
Table 7. STEVAL-SCR002V1 Versions
22
Regulatory Compliance Information
23
Revision History
24
Table 8. Document Revision History
24
Table of Contents
25
List of Tables
26
List of Figures
27

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