SylphAudio D200 MKII TPA3255 Stereo Amplifier Module [Archived]
Mid-power chip-based class-D amplifier with sound improvements through optimization and careful parts selection.
Analog inputs can accept differential or single ended signals configurable via solder jumpers. The output is 2 channel, stereo BTL configuration. Balanced input is enabled by default unless otherwise requested.
A split supply is used in the opamp buffer section in order to delete the redundant input coupling caps in the frontend audio path which results to reducing the smearing effect on sound and increased clarity. The opamp rail supplies are being generated on-board with positive and negative post regulators.
It uses the same ATS heatsink that can be found on official Texas Instruments TPA3255 EVM modules.
Solder jumper for slave setting, OSC IOM/IOP pads are under the PCB for multi-device configuration. (SLAA787)
The board has a standard PFFB configuration from SLAA788A. PFFB is disabled by default and can be enabled/disabled through solder jumpers (power supply should be fully turned off).
Capacitor for PVDD is either United Chemi-con KZN / KYB Series or Panasonic FC series whichever is available.
1 pc Sylph-D200 Mark II stereo Ready to Run module.
2 pc female 2.54 mm 3 pin connector.
Supply Voltage: 24V DC min to 51V DC max
Unclipped Power (51V Supply): 85W-8Ω, 170W-4Ω per ch
Input sensitivity - SE (PFFB disabled): 1V RMS
Input sensitivity - SE (PFFB enabled): 2V RMS
Input sensitivity - Balanced (PFFB disabled): 2V RMS
Input sensitivity - Balanced (PFFB enabled): 4V RMS
Input impedance: 10K Ω
Input configuration: SE / Balanced (solder jumper)
Load impedance: 4Ω or 8Ω
Idle dissipation: ~7.5W at 50V DC
Footprint: 150mm x 100mm x 45mm (L * W * H)
Number of PCB Layers: 2 layer copper
Overcurrent /short protection: Yes
Over voltage protection: Yes
Overheat protection: Yes
Turn on-off pop suppression: Yes
Gross packed weight: 500g
ATS Heatsink Part No.
Recommended Power Supply
- 48V DC Single supply SMPS 350W or higher.
- DO NOT use power supply with split rails.
- Mean Well LRS-350-48, or SE-450-48
- Use 44V DC for unregulated linear supplies
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