用户手册 — STMicroelectronics HVLED805 Demonstration Board STEVAL-ILL037V1

目录

• Table 1. Device summary

  1
• Figure 1. Application diagram

  1
• 1 Description

  3
• 2 Maximum ratings

  4
  • Table 2. Absolute maximum ratings

    4
  • Table 3. Thermal data

    4
• 3 Electrical characteristics

  5
  • Table 4. Electrical characteristics

    5
• 4 Pin connection

  7
  • Figure 2. Pin connection (top view)

    7
  • Table 5. Pin functions

    8
  • Figure 3. COSS output capacitance variation

    9
  • Figure 4. Off state drain and source current test circuit

    9
  • Figure 5. Start-up current test circuit

    10
  • Figure 6. Quiescent current test circuit

    10
  • Figure 7. Operating supply current test circuit

    11
  • Figure 8. Quiescent current during fault test circuit

    11
• 5 Application information

  12
  • Figure 9. Multi-mode operation of HVLED805 (Constant voltage operation)

    12
  • 5.1 Power section and gate driver

    13
  • 5.2 High voltage startup generator

    13
    • Figure 10. High-voltage start-up generator: internal schematic

      13
    • Figure 11. Timing diagram: normal power-up and power-down sequences

      14
  • 5.3 Secondary side demagnetization detection and triggering block

    15
    • Figure 12. DMG block, triggering block

      15
    • Figure 13. Drain ringing cycle skipping as the load is progressively reduced

      16
  • 5.4 Constant voltage operation

    16
    • Figure 14. Voltage control principle: internal schematic

      17
  • 5.5 Constant current operation

    18
    • Figure 15. Current control principle

      19
    • Figure 16. Constant current operation: Switching cycle waveforms

      20
  • 5.6 Voltage feedforward block

    20
    • Figure 17. Feedforward compensation: internal schematic

      21
  • 5.7 Burst-mode operation at no load or very light load

    22
    • Figure 18. Load-dependent operating modes: timing diagrams

      23
  • 5.8 Soft-start and starter block

    23
  • 5.9 Hiccup mode OCP

    23
    • Figure 19. Hiccup-mode OCP: timing diagram

      24
  • 5.10 Layout recommendations

    24
    • Figure 20. Suggested routing for converter

      25
• 6 Package mechanical data

  26
  • Table 6. SO16N mechanical data

    26
  • Figure 21. Package dimensions

    27
• 7 Revision history

  28
  • Table 7. Document revision history

    28