copilot

1. The TPA3255DDV Class-D amplifier itself
2. Input sources (audio signals)
3. Power Supply unit
4. Output endpoints (speakers)

• Audio Inputs:
  • Connect INPUT_A and INPUT_B to your audio source.
• Audio Outputs:
  • Connect each output (OUT_A_1, OUT_A_2, OUT_B, and OUT_C) to its corresponding speaker terminal.
• Power Supply:
  • Power supply voltages should be connected to PVDD_AB_1, PVDD_AB_2, PVDD_AB_3, PVDD_CD_1, PVDD_CD_2, PVDD_CD_3, GVDD_AB, and GVDD_CD.
• Ground Connections:
  • Ground connections should be made to GND_1, GND_2, GND_3, GND_4, GND_5, GND_6, GND_7, and GND_8.
• Boost Supply:
  • For the boost supply BST_A, BST_B, BST_C, and BST_D are used.
• Digital functions:
  • M1 and M2 control the operating mode (stereo, PBTL or quad).
  • An open-drain FAULT pin indicates undervoltage and overtemperature conditions.
  • The power supply tracking is achieved by DVDD, AVDD and VDD pins.
• Other Inputs:
  • FREQ_ADJ can be used to adjust the switching frequency.
  • OC_ADJ can be used to change the overcurrent threshold.
  • Other pins like ~RESET, ~CLIP_OTW, and VBG are there for reset, clip and Over Temperature Warning (OTW), and to supply the voltage reference respectively.