User Manual

The TPA005D02 Audio Power Amplifier Evaluation Module
3-3
Details
3.2 The TPA005D02 Audio Power Amplifier Evaluation Module
The TPA005D02 Class D Stereo Audio Power Amplifier Evaluation Module is
powered by a TPA005D02 class D stereo power amplifier integrated circuit
capable of delivering greater than 2 W of continuous power per channel into
4-Ω loads. The amplifier IC operates in the bridge-tied load mode for maximum
efficiency. The evaluation module includes onboard switches for muting and
shutdown and a control input pin for muting. A pair of indicator LEDs are
mounted on the module to display power supply undervoltage and amplifier
IC thermal status.
The module can be used with the TI Plug-N-Play Audio Amplifier Evaluation
Platform (Figure 3–1) or wired directly into circuits or equipment. The module
has single in-line header connector pins mounted to the underside of the
board. These pins allow the module to be plugged into the TI platform, which
automatically makes all the signal input and output, power, and control
connections to the module.
The module connection pins are on 0.1-inch centers to allow easy use with
standard perf board and plug board-based prototyping systems. Or, the EVM
can be wired directly into existing circuits and equipment when used
stand-alone.
The module appears in Figure 3–2 and its schematic is shown in Figure 3–3.
Figure 3–2. TPA005D02 Class D EVM
Texas Instruments
1998
R6 R7
VDD
GND
L1
L2
L3
L4
U1
C21
C19
C15
+
TPA005D02 EVM Board Rev. A
VDD
GND
C25
Lout+
Lout–
Mute
Rout–
Rout+
C24
D2
D3
C4
C2
C3
C5
GND
RIN+
RIN–
C1
R2
R1
Q1
LIN–
LIN+
GND
Mute
S1
D1
C9
SLOP223
C7
C6
1
R3
+
C22
C23
C12
C10
C14
C13
C17
S2
C20
R4
R5
C8
C11
C27
C26
Shutdown