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TPA3126D2 Datasheet Preview

TPA3126D2 Datasheet

Class-D Audio Amplifier

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TPA3126D2
SLOS942 – APRIL 2018
TPA3126D2 50-W Stereo, Analog-Input, Class-D Audio Amplifier with Low, 15-mA Idle
Current and AM Avoidance
1 Features
1 Longer Battery-Operating Time:
– Ultra-Low Idle Current: 15 mA at 12 V
• 2 × 50 W Into a 4-Ω Load at 21 V, 10% THD+N
• Wide Voltage Range: 4.5 V to 26 V
• Highly Efficient Class-D Operation
– Hybrid Modulation Scheme Dynamically
Reduces Power Loss
– Low Rds(on) of 90-mΩ Enables > 90% Efficiency
• Pop-and-Click Noise Suppression
• Supports Stereo, Mono BTL and Mono PBTL
• Multiple Switching Frequencies:
– AM Avoidance
– Master and Slave Synchronization
– 300-KHz to 1.2-MHz Switching Frequencies
• Selectable Gains: 20 dB, 26 dB, 32 dB, 36 dB
• Programmable Power Limit
• Supports Both Single and Dual Power Supply
• Integrated Protections with Error Report:
– Overvoltage, Undervoltage, Overtemperature,
DC-Detect, and Short Circuit
• Thermally Enhanced Package
– DAD (32-Pin HTSSOP PowerPAD™ Up)
• Performance Upgrade of the TPA3116D2
– 70% Less Idle Current; Pin-to-Pin Compatible
SPACER
TPA3126 and TPA3116 Idle Current
80
TPA3116 (BD Mode)
70
TPA3126 (Hybrid Mode)
60
50
40
30
20
10
0
5
Gain = 26dB, TA = 25qC, RL = 8:
10
15
20
Supply Voltage (V)
25
D002
2 Applications
• Speaker Docks
• Bluetooth® and Wi-Fi Speakers
• Voice Operated Speakers or Smart Speakers
• Sound Bars
• Bookshelf Stereo System
3 Description
The TPA3126D2 is a 50-W, stereo, low-idle-current
Class-D amplifier in a thermally enhanced package.
The TPA3126D2 includes TI's proprietary hybrid
modulation scheme, which dynamically reduces idle
current at low power levels to extend the battery life
of portable audio systems, like bluetooth speakers.
To further simply the design, the Class-D amplifier
integrates full protection features including short
circuit, thermal shutdown, overvoltage, undervoltage,
and DC speaker protection. Faults are reported back
to the processor to prevent devices from being
damaged during overload conditions.
Device Information(1)
PART NUMBER PACKAGE
BODY SIZE (NOM)
TPA3126D2
HTSSOP (32)
11.00 mm × 6.20 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Application Circuit
RIGHT
TPA3126D2
MONO
DETECT
LC
Filter
Audio
Source
LEFT
And Control
AM Avoidance Control
Mode Select
GAIN control and Master/Slave setting
Power Limit
Capable of synchronizaing to other devices
PBTL
DETECT
SDZ
MUTE
FAULTZ
AM2,1,0
MODSEL
GAIN/SLV
PLIMIT
SYNC
LC
Filter
PVCC
Power Supply
4.5V t 26V
AVCC
Separate Power
Supply (Optional)
4.5V-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.




etcTI

TPA3126D2 Datasheet Preview

TPA3126D2 Datasheet

Class-D Audio Amplifier

No Preview Available !

TPA3126D2
SLOS942 – APRIL 2018
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Table..................................... 3
6 Pin Configuration and Functions ......................... 4
7 Specifications......................................................... 6
7.1 Absolute Maximum Ratings ...................................... 6
7.2 ESD Ratings ............................................................ 6
7.3 Recommended Operating Conditions....................... 6
7.4 Thermal Information .................................................. 7
7.5 DC Electrical Characteristics .................................... 7
7.6 AC Electrical Characteristics..................................... 8
7.7 Typical Characteristics .............................................. 9
8 Detailed Description ............................................ 13
8.1 Overview ................................................................. 13
8.2 Functional Block Diagram ....................................... 13
8.3 Feature Description................................................. 14
8.4 Device Functional Modes........................................ 22
9 Application and Implementation ........................ 24
9.1 Application Information............................................ 24
10 Power Supply Recommendations ..................... 26
10.1 Power Supply Mode .............................................. 26
11 Layout................................................................... 27
11.1 Layout Guidelines ................................................. 27
11.2 Layout Example .................................................... 28
11.3 Heat Sink Used on the EVM ................................. 30
12 Device and Documentation Support ................. 31
12.1 Device Support .................................................... 31
12.2 Receiving Notification of Documentation Updates 31
12.3 Related Documentation......................................... 31
12.4 Community Resources.......................................... 31
12.5 Trademarks ........................................................... 31
12.6 Electrostatic Discharge Caution ............................ 31
12.7 Glossary ................................................................ 31
13 Mechanical, Packaging, and Orderable
Information ........................................................... 31
4 Revision History
DATE
April 2018
REVISION
*
NOTES
Initial release.
2
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Product Folder Links: TPA3126D2
Copyright © 2018, Texas Instruments Incorporated


Part Number TPA3126D2
Description Class-D Audio Amplifier
Maker etcTI
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