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Plug-N-Play Platform Power Requirements and Connections
3-3
Details
3.2 Plug-N-Play Platform Power Requirements and Connections
The TPA032D03 mono class-D audio power amplifier evaluation module is
designed to operate from a supply voltage between 9 V and 14 V. For best
performance, the module should be operated at 12 V.
The TI plug-n-play audio amplifier evaluation platform provides several
options for powering the TPA032D03 class-D EVM. Table 3–1 shows the
platform
jumper and switch settings for each power source option (see the
User’s Guide for the TI plug-n-play audio amplifier platform, TI Literature
Number SLOU011 for more information). The TPA032D03 class-D EVM
requires no setup for power source selection.
Table 3–1.Platform Jumper and Switch Settings for the TPA032D03 EVM Power Inputs
POWER TYPE (Note 2) JP1 JP2 JP3 JP4 JP5 JP6 JP7 JP8 S1 S2 (Note 3) S3
VCC (J1) ON OFF OFF ON ON Mute X Lo ON OFF U5
AC/DC (J2) OFF ON OFF ON ON Mute X Lo ON OFF U5
Notes: 1) ON = Jumper installed, OFF = Jumper
NOT
Installed, X = Don’t care
2) Install a voltage regulator EVM (SLVP097) in platform socket U6 for VDD power to EVM control inputs.
3) Set to ON when Tone Control Board SLOP109 is installed in U1, otherwise set to OFF.
Although the TPA032D03 amplifier IC draws approximately 1.6 A from the
power supply during continuous full power output, peak current draw can be
as high as 2.3 A. Any power supply connected to the platform should be
capable of providing 2.3 A (peak) to avoid clipping of the output signal during
voltage peaks. Current consumption driving speakers at normal listening
levels is typically 0.1 A or less.
A V
DD
supply of 5 V is required for normal operation of the TPA032D03 EVM.
V
DD
can either be applied to the platform V
DD
power input terminals (J6) or a
voltage regulator (SLVP097 or equiv.) can be installed in platform socket U6
to provide V
DD
from the platform V
CC
supply.
The platform is equipped with overvoltage and reverse-polarity supply voltage
input protection in the form of fused crowbar circuits.
V
DD
voltage applied to platform screw terminals J6
MUST NOT
exceed
the absolute maximum rating for the TPA032D03 amplifier IC installed on
the evaluation module (5.5 V) or damage to the IC may result. In no case
should V
DD
voltage of the incorrect polarity or in excess of 6.0 V be applied
to screw terminals J6 of the platform, or the power protection circuit on the
V
DD
line will trip.
V
CC
voltage applied to the platform
MUST NOT
exceed the maximum
voltage input specified for the voltage regulator module installed in socket
U6 (12 V for the SLVP097), or damage to the voltage regulator module
may result. In no case should V
CC
voltage applied to the platform exceed
15 V, or the overvoltage protection circuit on the V
CC
bus will trip.