Filter
Top Products
Power Requirements
2-7
Operation
2.4 Power Requirements
The TPA2008D2 audio power amplifier evaluation module can operate from
any voltage between approximately 4.5 V and 5.5 V; however, the TPA2008D2
amplifier IC on the module is characterized for operation at 5 V. For best
performance (highest output power with lowest distortion), the module should
be operated at 5 V.
The TI plug-n-play audio amplifier evaluation platform with a voltage regulator
EVM installed on it can provide a regulated V
DD
supply from a wide variety of
unregulated V
CC
voltage inputs between 5.5 V and 12 V, including an onboard
9-V battery. Alternatively, an external regulated power source can be used to
supply V
DD
voltage to the platform and the TPA2008D2 evaluation module
installed on it.
Although the TPA2008D2 amplifier IC draws approximately 1 A from the power
supply during continuous full power output, peak current draw can be as high
as 2 A. Any power supply connected to the platform should be capable of
providing 2 A of current to avoid clipping of the output signal during peaks.
Current consumption driving speakers at normal listening levels is typically
0.1 A or less.
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 TPA2008D2 amplifier IC installed on
the evaluation module (6 V) or damage to the IC may result. In no case
should V
DD
voltage of the incorrect polarity or in excess of 6.1 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.