TIC-260BTL TPA3255 PFFB Stereo [Archived]

TPA3255 passive post filter feedback implementation with modifications for sound improvement.

Uses Infineon's OptiReg TLS205B0 24 µVRMS, 500mA linear post regulator for 12V supply, which produces clean and quiet power for the input opamps and low noise floor for a TPA3251 based module.

Designed for use with Coilcraft VER2923-103KL flat wire, low loss inductors to get the most out of the TPA3255's THD+N performance. The output inductors run cool and dissipate very little heat on idle.

The analog input can accept full balanced or single ended signals which can be configured by a solder jumper under the PCB. The output is 2 channel, stereo BTL configuration.

A separate voltage supervisor IC is used to mute the amp in power on, and power off.

Use of oversized capacitors and resistors for the PFFB zobel network to ensure reliable operation.

Package Includes
1 pc stereo BTL PFFB partial module.
6 pc female faston tab connector.
2 pc female 2.54 mm 3 pin connector.
2 pc compatible heatsink screws and washers.

Specifications
Recommended Voltage: 43V to 48V DC
Output Power (<1% THD+N): 110W-8Ω, 220W-4Ω
Voltage gain: 10.9x (~20.7dB)
Input sensitivity: 2.5V RMS
Input impedance: 10K Ω
Input configuration: SE / Balanced input jumper
Load impedance: 4Ω or 8Ω
Idle dissipation: ~7W at 48V DC
Footprint: 148mm x 100mm x 55mm (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: 650g

Other Specs
Transient voltage protection: 62V TVS + 56V SCR
Zobel network values: 1Ω + 220nF
Compatible Heatsink: ATS-TI1OP-519-C1-R3
Compatible Inductors: VER2923, AGP2923, 7G23A

Recommended Power Supply (NOT INCLUDED)
- Single supply SMPS 48V DC, 200W or higher.
- Should be able to handle large load capacitance
and should normally operate on light load (~5W).

-- Options --
With 2 pcs OPA1656 or LME49860
on SOIC-8 to DIP-8 adapter ENIG PCB
-----------------------------------------

Notes on Input Sensitivity
2.5Vrms is needed to drive the amp into near clipping condition (1% THD).
A 1.5Vrms input can fill a small room with loud music.

-- Shipping --
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Contact us for actual shipping amount of combined items.
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