TPA3111D1-Q1 Datasheet, PDF (1/31 Pages) Texas Instruments – Filter-Free Mono Class-D Audio Power Amplifier

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
TPA3111D1-Q1
SLOS759E – MARCH 2012 – REVISED DECEMBER 2015
TPA3111D1-Q1 10-W Filter-Free Mono 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
• 10-W into an 8-Ω Load at 10% THD+N from a 12-
V Supply
• 7-W into a 4-Ω Load at 10% THD+N from an 8-V
Supply
• 94% Efficient Class-D Operation into 8-Ω Load
Eliminates Need for Heat Sinks
• Wide Supply Voltage Range Allows Operation
from 8 to 26 V
• Filter-Free Operation
• SpeakerGuard™ Speaker Protection 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
3 Description
The TPA3111D1-Q1 device is a 10-W efficient,
Class-D audio power amplifier for driving a bridge tied
speaker. 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 TPA3111D1-Q1 device can drive a mono
speaker as low as 4 Ω. The high efficiency of the
TPA3111D1-Q1 device, > 90%, eliminates the need
for an external heat sink when playing music.
The outputs are fully protected against shorts to
GND, V_CC, 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)
TPA3111D1-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.
2 Applications
• Automotive Noise Generation for HEV/EV
• Automotive Emergency Call (eCall) Systems
• Automotive Infotainment Systems (Head Unit,
Cluster, Telematics, Navigation)
• Automotive Connectivity Gateway
• Professional Audio Equipment (PA Speakers,
Studio Headphones, Performance Amplifiers,
Premium Microphones)
• Aerospace and Aviation Audio Systems
Simplified Application Diagram
Audio
Source
OUT+
OUT–
1 µF
INP
INN
TPA3111D1-Q1
GAIN0
GAIN1
OUTP
OUTN
Ferrite
BBeEaAd ^D
Filter
PLIMIT
10 W
8Ω
Fault
SD
PVCC
8 to 26 V
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.