XOCECO LC-52R36, Service Manual

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3. TPA3001D1
The TPA3001D1 is a 20-W mono bridge-tied load (BTL) class-D audio power amplifier with high
efficiency, eliminating the need for heat sinks. The TPA3001D1 can drive 4-
Ω or 8- Ω speakers with
only a ferrite bead filter required to reduce EMI.
The gain of the amplifier is controlled by two input terminals,GAIN1 and GAIN0. This allows the
amplifier to be configured for a gain of 12, 18, 23.6, and 36 dB. The differential input stage provides
high common mode rejection and improved power supply rejection.
The amplifier also includes depop circuitry to reduce the amount of pop at power-up and when
cycling SHUTDOWN.
The TPA3001D1 is available in the 24-pin thermally enhanced TSSOP package (PWP) which
eliminates the need for an external heat sink.
INTERNAL BLOCK DIAGRAM: