
Operation
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2 Operation
2.1 Quick Start List for Stand-Alone Operation
Follow these steps to use the TPA3110D2 EVM stand-alone or when connecting it into existing circuits or
equipment. Connections to the EVM module can be made by inserting stripped wire or banana plugs for
the power supply and output connections. The input connectors are RCA phono jacks.
Power Supply
A single power supply is required to power up the EVM. Since most of the pins are PVCC compliant, the
PVCC supply can also be used to power the analog supply (AV
CC
) and can be used to pull up the logic
pins for shutdown (SD) control, fault detection (FAULT), gain (GAIN0 and GAIN1), and PBTL as long as
the voltage slew rate is limited to 10 V/ms. GVDD is an internally generated supply for the output FETs
and is also used to power the PLIMIT voltage divider circuit on the EVM. PLIMIT is GVDD compliant, but
not PVCC compliant. PLIMIT can also be powered by an external supply connected to the PLIMIT pin.
Take care not to power the PLIMIT pin (or connect power to the GVDD pin inadvertently through the
PLIMIT network) when the PVCC supply is turned off. This can cause damage to the IC.
Table 2. Power Supply Requirements
Description Voltage Range Current Requirements Minimum Wire Size
PVCC 8 to 26 V 3 A 24 AWG
Evaluation Module Preparations
1. Ensure that the external power source is set to OFF.
2. Connect the external regulated power supply adjusted from 8V to 26V to the module PVCC and GND
banana jacks taking care to observe marked polarity.
Inputs and Outputs
1. For a BTL Configuration, connect a Load(s) across the outputs (LEFT+ and LEFT-) and (RIGHT+ and
RIGHT-). For PBTL configuration, connect a single load from one of the left speaker jacks to one of the
right speaker jacks depending on how the filters are loaded.
2. Connect audio inputs, either differential or single-ended, to the LIN and RIN RCA phono plugs for BTL
operation. For PBTL operation, apply a single input, differential or single-ended, to the RIN RCA phono
plug.
Control Inputs
1. Ensure the mode jumpers, PBTL, GAIN0, GAIN1, are set correctly depending on the desired operating
state. Also, make sure to connect the left outputs together and the right outputs together at the LEFT
and RIGHT molex connectors if PBTL operation is desired.
Power Up
1. Verify correct voltage and input polarity and turn the external power supplies ON
The EVM should begin operation.
2. Adjust the audio source for the correct volume and enjoy!
4
TPA3110D2 EVM Audio Amplifier Evaluation Board SLOU263B–July 2009–Revised August 2015
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