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TPA3110D2-Q1
SLOS794B – SEPTEMBER 2012 – REVISED SEPTEMBER 2015
TPA3110D2-Q1 15-W Filter-Free Stereo Class-D
Audio Power Amplifier With SpeakerGuard™
1 Features
•1 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade 1: –40°C to 125°C
Ambient Operating Temperature Range
– Device HBM ESD Classification Level H2
– Device CDM ESD Classification Level C2
• 15-W/ch Into 8-Ω Loads at 10% THD+N From a
16-V Supply
• 10-W/ch Into 8-Ω Loads at 10% THD+N From a
13-V Supply
• 30-W Into a 4-Ω Mono Load at 10% THD+N From
a 16-V Supply
• 90% Efficient Class-D Operation Eliminates Need
for Heat Sinks
• Wide Supply Voltage Range Allows Operation
from 8 V to 26 V
• Filter-Free Operation
• SpeakerGuard™ Protection Circuitry Includes
Adjustable Power Limiter Plus DC Protection
• Flow Through Pin Out Facilitates Easy Board
Layout
• Robust Pin-to-Pin Short-Circuit Protection and
Thermal Protection with Auto Recovery Option
• Excellent THD+N and Pop-Free Performance
• Four Selectable Fixed Gain Settings
• Differential Inputs
2 Applications
• Automotive Noise Generation for HEV/EV
• Automotive Emergency Call Systems (eCall)
• Automotive Infotainment Systems (i.e. Head Unit,
Connectivity Gateway, Cluster, Telematics,
Navigation)
• ADAS Noise Generation for Blind Spot Detection,
Security and Alarm Systems
• Professional Audio Equipment (Performance
Amplifiers, Premium Microphones)
• Aerospace and Aviation Audio Systems
3 Description
The TPA3110D2-Q1 is a 15-W (per channel) efficient,
Class-D audio power amplifier for driving bridged-tied
stereo speakers. Advanced EMI suppression
technology enables the use of inexpensive ferrite
bead filters at the outputs while meeting EMC
requirements. SpeakerGuard protection circuitry
includes an adjustable power limiter and a DC
detection circuit. The adjustable power limiter allows
the user to set a virtual voltage rail lower than the
chip supply to limit the amount of current through the
speaker. The DC detect circuit measures the
frequency and amplitude of the PWM signal and
shuts off the output stage if the input capacitors are
damaged or shorts exist on the inputs.
The TPA3110D2-Q1 can drive stereo speakers as
low as 4 Ω. The high efficiency of the device, 90%,
eliminates the need for an external heat sink when
playing music.
The outputs are also fully protected against shorts to
GND, VCC, and output-to-output. The short-circuit
protection and thermal protection includes an auto-
recovery feature.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPA3110D2-Q1
HTSSOP (28)
9.70 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
TPA3110D2-Q1 Simplified Application Schematic
Audio
Source
OUTL+
OUTL-
OUTR+
OUTR-
1mF
LINP
LINN
TPA3110D2-Q1
RINP
RINN
GAIN0
GAIN1
PLIMIT
PBTL
OUTPL
OUTNL
OUTPR
OUTNR
Fault
SD
PVCC
FERRITE
BEAD
FILTER
FERRITE
BEAD
FILTER
15W
8W
15W
8W
8 to 26V
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
