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Texas Instruments TPA3244EVM User guides
TPA3244EVM
Quick-Start Guide
➔ Start Here
–
ti.com/tool/tpa3244evm
+
Evaluation Kit Contents
• TPA3244 device
• PCB and external components to evaluate at full power
• RCA input jacks
• Banana output connectors
• No heatsink required
Not included:
• Power supply: up to 31.5V, 12A for max power
• Speakers
• High-Resolution Audio Source
Supported Output Configurations
See full User’s Guide online for more information.
OUT A
Class-D
Amplifier
OUT B
OUT A
Class-D
Amplifier
OUT A
OUT B
Class-D
Amplifier
OUT B
OUT C
OUT C
OUT C
OUT D
OUT D
OUT D
4-Channels—single-ended (SE)
2-Channels—bridge-tied load (BTL)
2
1-Channel—parallel bridge-tied load (PBTL)
Getting Started
1. Ensure the RESET switch (S1) is in the RESET position.
2. Connect the power supply to the EVM using the PVDD and GND
terminals.
3. Connect the first speaker to the output terminals OUTA and OUTB.
4. Connect the second speaker to the output terminals OUTC and OUTD.
5. Connect a high-resolution audio source to INA (J3) and INC (J18) for
single-ended operation, which are default RCA input terminals.
6. Apply power (14V-31.5V) and move the RESET switch (S1) to the
NORMAL position.
Power Supply
(Max 31.5V)
LC Filter
Inductors Capacitors
Mode Jumpers
OUTD
Audio Input
Board
Connector
GND
PVDD
OUTC
Audio Inputs
(RCA Jacks)
M2
Output
Terminals
OUTB
M1
CLP_OTWz
FAULTz
OUTA
RESET
Reset Switch
Clipping/
Over-temperature warning
LED
Fault LED
3
Alternate
Inductor
Pads
DC Blocking
Capacitors
(for single-ended mode only)
Indicator Descriptions
3.3V – indicates the 3.3V rail used for GPIO control is active
12V – indicates the 12V rail used for amplifier gate drive is active
CLP_OTWz – indicates when clipping or over-temperature warning occur
FAULTz – indicates when a fault condition occurs (requires toggling reset
to clear fault)
FAULTz
ON
ON
OFF
OFF
CLP_OTWz
ON
OFF
ON
OFF
Possible Faults
OTW, OTE, UVP, OLP
UVP, OLP
OTW (solid), Early Clipping (flickering)
No Fault
OTW - Over-temperature warning (> 125°C)
OTE - Over-temperature error / shutdown (> 150°C)
UVP - Under-voltage protection
OLP - Over-load or over-current protection
Default Jumper Configuration
Jumper Default
Comment
Jumper Default
J29
IN
PVDD to 15V BUCK
J24
J31
IN
15V BUCK to 12V TERM
J32
IN
12V LDO to 12V TERM
J33
IN
Comment
IN
OUTC CAP SHUNT
J25
IN
OUTD CAP SHUNT
J26
2 to 3
INC SELECT
3.3V LDO to 3.3V TERM
J27
2 to 3
IND SELECT
J21
OUT
CSTART SE
J7
OUT
PBTL SELECT INC
J16
3 to 4
MASTER MODE
J8
OUT
PBTL SELECT IND
J5
2 to 3
M1-BTL
J10
OUT
INA/B DIFF INPUT
J6
2 to 3
M2-BTL
J12
OUT
INC/D DIFF INPUT
J22
IN
OUTA CAP SHUNT
J4
1 to 2
INA/B SE INPUT
J23
IN
OUTB CAP SHUNT
J19
1 to 2
INC/D SE INPUT
4
Features & Benefits
High-Resolution
Deliver audio as it was
recorded all the way to
the speaker. The TPA32xx
family supports hi-res audio.
Low-Distortion
A new closed-loop design
enables utra-low THD
across all frequencies.
High-Bandwidth
The TPA32xx family of
devices support up to
100 kHz audio bandwidth.
Efficient Design
Best power efficiency
and idle losses enable
low power consumption
and smaller heat sink.
High-Power
Devices with 35 W to
650 W of output power
that deliver large sound
in a compact size.
Easy to use
Simplify PCB design
with fewer external
components, integrated
protection, and scalable
power options.
THD+N - Total Harmonic Distortion + Noise - %
THD+N vs Output Power – 4Ω, BTL, 1kHz
10
4Ω
8Ω
1
0.1
0.01
TA = 25°C
0.001
10m
100m
1
10
Po - Output Power - W
5
100 200
D003
TPA32xx Product Family
Device
TPA3244
TPA3245
TPA3250
TPA3251
TPA3255
Max Power to BTL/ Ch (W)
110
145
130
220
315
Max Power to PBTL (W)
605
160
230
190
355
Min Supported BTL Load (Ω)
4
3
4
3
4
Power Stage Supply Max (V)
31.5
31.5
38
38
53.5
Bottom
Top
Bottom
Top
Top
Thermal Pad Location
Package
44HTSSOP2 44HTSSOP1 44HTSSOP2 44HTSSOP1 44HTSSOP1
Dimensions
6.1 x 14mm
Pad-Up, pin-compatible package
2
Pad-Down, pin-compatible package
Power numbers taken at 10% THD+N
1
More Information
TPA3244 Product Webpage
High-Power Audio Portal
• TPA3244 Datasheet
• New Products
• Complete TPA3244EVM User’s Guide
• Technical Documents
• Schematics and layout
• Support and Training
• Product Selection Tool
Available on: ti.com/tpa3244 Available on: ti.com/highpoweraudio
Engage in the
Audio Amplifiers Support Forum
TM
Search for solutions, get help and share
knowledge with fellow engineers
6
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