ZHCSF52B June 2016 – December 2017 TPA3137D2
PRODUCTION DATA.
The TPA3137D2 device offers the feature of parallel BTL operation with two outputs of each channel connected directly. If the PBTL (pin 14) is tied high, the positive and negative outputs of each channel (left and right) are synchronized and in phase. To operate in this PBTL (mono) mode, tie PBTL pin to VCC and apply the input signal to the RINP and RINN inputs and place the speaker between the LEFT and RIGHT outputs with OUTPL connected to OUTNL and OUTPR connected to OUTNR to parallel the output half bridges for highest power efficiency. For an example of the PBTL connection, see the schematic in the Typical Applications section.