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TPA6404-Q1: Parallel BTL (PBTL) mode

Part Number: TPA6404-Q1


I have a question about the TPA6404Q1 audio amplifier.

 We want to run the TPA6404-Q1 in Parallel BTL (PBTL) mode.

 On page 47 of the data sheet, figure 65 shows how to connect the channels in parallel mode.

 What we see strange is that, after the inductances, appear connected in parallel the outputs OUT1P with OUT1M, OUT2P with OUT2M, etc.

 It may be an mistake? Since the outputs P and M are normally 180° out of phase.

 We think that the correct connection should be OUT1P with OUT2P and OUT1M with OUT1M and the same with channels 3 and 4.

 We would like you to clarify for us if the connection method that appears in figure 65 of the data sheet is correct or if it is an error and the correct one is the one that appears in the proposed schematic.


 Francisco Gutierrez