TDA8929T Class-D Audio Power Amplifier


The following diagram is the circuit diagram of Class-D audio power amplifier which built based on power chip TDA8929T.

class-d power audio amplifier circuit based TDA8929T

About TDA8929T:
The power IC TDA8929T is the controller of a two-chip set for a high efficiency class-D audio power amplifier system. The system is divided into two chips:

  • TDA8929T; the analog controller chip inside a SO24 package
  • TDA8926J/ST/TH or TDA8927J/ST/TH; a digital power stage inside a DBS17P, RDBS17P or HSOP24 power package.

With this chip set a compact 2 50 W or 2 100 W audio amplifier system might be constructed, operating with high efficiency and quite reduced dissipation. No heatsink is needed, or depending on source voltage and load, a really tiny one. The system operates above a wide supply voltage range from 15 as much as 30 V and consumes an extremely minimal quiescent current.

TDA8929T Features:

  • Low distortion
  • Fixed gain of 30 dB Single-Ended (SE) or 36 dB Bridge-Tied Load (BTL)
  • Operating voltage from 15 to 30 V
  • Very low quiescent current
  • Internal switching frequency can be overruled by an external clock
  • No switch-on or switch-off plop noise
  • Good ripple rejection
  • Diagnostic input for short-circuit and temperature protection
  • Usable as a stereo Single-Ended (SE) amplifier or as a mono amplifier in Bridge-Tied Load (BTL)
  • Start-up safety test, to protect for short-circuits at the output of the power stage to supply lines
  • Electrostatic discharge protection (pin to pin)

The schematic diagram, PCB layout design, characteristic information and the complete explanation about this TDA8929T Class-D Audio Power Amplifier already described in the datasheet document.

Download the TDA8929T datasheet

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