Manuels d'utilisation pour STMicroelectronics HVLED805 Evaluation Board EVALHVLED805

Table des matières

• Table 1. Device summary

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• Figure 1. Application diagram

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• 1 Description

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• 2 Maximum ratings

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  • Table 2. Absolute maximum ratings

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  • Table 3. Thermal data

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• 3 Electrical characteristics

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  • Table 4. Electrical characteristics

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• 4 Pin connection

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  • Figure 2. Pin connection (top view)

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  • Table 5. Pin functions

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  • Figure 3. COSS output capacitance variation

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

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  • Figure 5. Start-up current test circuit

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  • Figure 6. Quiescent current test circuit

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  • Figure 7. Operating supply current test circuit

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  • Figure 8. Quiescent current during fault test circuit

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• 5 Application information

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

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  • 5.1 Power section and gate driver

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  • 5.2 High voltage startup generator

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

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

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  • 5.3 Secondary side demagnetization detection and triggering block

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    • Figure 12. DMG block, triggering block

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

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  • 5.4 Constant voltage operation

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    • Figure 14. Voltage control principle: internal schematic

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  • 5.5 Constant current operation

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    • Figure 15. Current control principle

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    • Figure 16. Constant current operation: Switching cycle waveforms

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  • 5.6 Voltage feedforward block

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    • Figure 17. Feedforward compensation: internal schematic

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

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

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  • 5.8 Soft-start and starter block

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  • 5.9 Hiccup mode OCP

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    • Figure 19. Hiccup-mode OCP: timing diagram

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  • 5.10 Layout recommendations

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    • Figure 20. Suggested routing for converter

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• 6 Package mechanical data

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  • Table 6. SO16N mechanical data

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  • Figure 21. Package dimensions

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• 7 Revision history

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  • Table 7. Document revision history

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