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User Manuals: ST ST7540 Power Line Transceiver
Manuals and User Guides for ST ST7540 Power Line Transceiver. We have
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ST ST7540 Power Line Transceiver manual available for free PDF download: Application Note
ST ST7540 Application Note (55 pages)
FSK powerline transceiver design guide for AMR
Brand:
ST
| Category:
Transceiver
| Size: 2 MB
Table of Contents
Figure 1. ST7540 Reference Design Board with Outline Dimensions
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Table of Contents
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1 Electrical Characteristics
7
Figure 2. Typical Curve for Output Current Limit Vs. RCL Value
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2 Safety Precautions
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3 ST7540 FSK Powerline Transceiver Description
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Figure 3. ST7540 Transceiver Block Diagram
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4 Evaluation Tools Description
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Figure 4. Complete Evaluation System Including a PC, an EVALCOMMBOARD and the EVALST7540-2 Board
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Figure 5. ST7540 Powerline Modem Demonstration Kit with Control Register Window
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5 Board Description
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Figure 6. Positioning of the Various Sections of the Board
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Figure 7. Modem and Coupling Interface Schematic
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Figure 8. Power Supply Schematic
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Coupling Interface
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Tx Active Filter
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Figure 9. Schematic of Rx and Tx Filters
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Tx Passive Filter
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Figure 10. Measured Frequency Response of the Tx Active Filter (Typical Curve)
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Figure 11. Simulated Frequency Response of the Tx Active Filter with Components Tolerance Effect
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Rx Passive Filter
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Figure 12. Measured Frequency Response of the Tx Active + Passive Filters Connected to the CISPR Net
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Figure 14. Measured Frequency Response of the Rx Passive Filter (Typical Curve)
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Input Impedance
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Figure 15. Simulated Frequency Response of the Rx Passive Filter with Components Tolerance Effect
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Conducted Disturbances
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Conducted Emissions
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Figure 16. Measured Input Impedance Magnitude of Coupling Interface in Tx Mode (Typical Curve)
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Figure 17. Measured Input Impedance Magnitude of Coupling Interface in Rx Mode (Typical Curve)
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Noise Immunity
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Figure 18. Conducted Emissions Test Setup
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Figure 19. Output Spectrum (Typical) at 72 Khz, 2400 Baud, Deviation 1, Mains 220Vac
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Figure 20. Narrow-Band Conducted Interference Test Setup
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Figure 21. Measured BER Vs. SNR Curve (Typical), White Noise
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Figure 22. SNR Vs. Frequency Curve (Typical) at BER = 10-3
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Figure 23. PCB Copper Dissipating Area for ST7540 Reference Design Board
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Thermal Design
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Figure 24. Packet-Fragmented Transmission
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Figure 25. Equivalent Model of the Thermal Impedance Qja of the HTSSOP28 Package with Exposed Pad
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Figure 26. Output Current Vs. Supply Current Typical Curve for ST7540 in Tx Mode
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Figure 27. Dissipated Power Vs. Load Impedance Modulus Typical Curve for ST7540 Reference Design Board
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Figure 28. a Recommended Oscillator Section Layout for Noise Shielding
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Oscillator Section
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Surge and Burst Protection
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Figure 29. Common Mode Disturbances Protection - Positive Disturbance
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Figure 30. Common Mode Disturbances Protection - Negative Disturbance
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Figure 31. Differential Mode Disturbances Protection
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50-Pin Connector for the EVALCOMMBOARD
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Figure 32. Scheme of the Connector for the EVALCOMMBOARD
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Power Supply
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Figure 33. Typical Waveforms at 230 Vac: Open Load
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Figure 34. Typical Waveforms at 230 Vac: Full Load
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Figure 35. Typical Waveforms at 265 Vac: Short-Circuit
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Figure 36. Typical Waveforms at 265 Vac: Startup
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Figure 37. Load Regulation
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Figure 38. SMPS Efficiency Curve
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6 Performance and Ping Tests
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Figure 39. ST7540 Powerline Modem Demonstration Kit Window for the Master Board
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7 Application Ideas
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Three-Phase Architecture
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Zero Crossing Detector
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Figure 40. Scheme of Principle for Three-Phase Architecture
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Figure 41. Schematic of a Zero Crossing Detection Circuit for Non-Isolated Coupling
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Received Signal Strength Indicator (RSSI)
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Figure 42. Schematic of a Zero Crossing Detection Circuit for Isolated Coupling
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Figure 43. ZC_OUT Vs. AC Mains Waveforms
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Non-Isolated Coupling
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Figure 44. Peak Detector Electrical Schematic
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Figure 45. Measured DC_OUT Vs. AC_IN Peak Detector Response
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DC Powerline Applications
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110 And 132.5 Khz Coupling Circuit
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Figure 46. Example Schematic for Non-Isolated Solution
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Figure 47. Line Coupling Interface for 110 Khz Channel
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Figure 48. Line Coupling Interface for 132.5 Khz Channel
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8 Troubleshooting
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Figure 49. PCB Layout - Component Placing
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Appendix A Board Layout
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Figure 50. PCB Layout - Top View
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Figure 51. PCB Layout - Bottom View
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List of Normative References
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