Manuels d'utilisation pour STMicroelectronics LED815 Evaluation Boards EVALHVLED815W15

Table des matières

• Table 1. Device summary

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• 1 Principle application circuit and block diagram

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  • 1.1 Principle application circuit

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    • Figure 1. Application circuit for high power factor LED driver - single range input

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    • Figure 2. Application circuit for standard LED driver

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  • 1.2 Block diagram

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    • Figure 3. Block diagram

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• 2 Pin description and connection diagrams

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  • Figure 4. Pin connection (top view)

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  • 2.1 Pin description

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    • Table 2. Pin description

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  • 2.2 Thermal data

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    • Table 3. Thermal data

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• 3 Electrical specifications

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  • 3.1 Absolute maximum ratings

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    • Table 4. Absolute maximum ratings

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  • 3.2 Electrical characteristics

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    • Table 5. Electrical characteristics

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    • Figure 5. OFF-state drain and source current test circuit

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    • Figure 6. COSS output capacitance variation

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    • Figure 7. Startup current test circuit

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    • Figure 8. Quiescent current test circuit

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    • Figure 9. Operating supply current test circuit

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    • Figure 10. Quiescent current during fault test circuit

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• 4 Device description

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  • 4.1 Application information

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    • Figure 11. Multi-mode operation of HVLED815PF (constant voltage operation)

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  • 4.2 Power section and gate driver

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  • 4.3 High voltage startup generator

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    • Figure 12. High-voltage start-up generator: internal schematic

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

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  • 4.4 Secondary side demagnetization detection and triggering block

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    • Figure 14. DMG block, triggering block

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

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  • 4.5 Constant current operation

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    • Figure 16. Current control principle

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    • Figure 17. Constant current operation: switching cycle waveforms

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  • 4.6 Constant voltage operation

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    • Figure 18. Voltage control principle: internal schematic

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  • 4.7 Voltage feed-forward block

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    • Figure 19. Feed-forward compensation: internal schematic

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  • 4.8 Burst-mode operation at no load or very light load

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    • Figure 20. Load-dependent operating modes: timing diagrams

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  • 4.9 Soft-start and starter block

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  • 4.10 Hiccup mode OCP

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    • Figure 21. Hiccup-mode OCP: timing diagram

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  • 4.11 High Power Factor implementation

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    • Figure 22. High power factor implementation connection - single range input

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  • 4.12 Layout recommendations

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    • Figure 23. Suggested routing for the led driver

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• 5 Package information

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  • Figure 24. SO16N mechanical data

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  • Figure 25. SO16N drawing

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  • Figure 26. SO16N recommended footprint (dimensions are in mm)

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• 6 Revision history

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  • Table 6. Document revision history

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