45-W, 2.1-MHz analog input 4-channel automotive Class-D Burr-Brown™ audio amplifier
Product details
Parameters
Package | Pins | Size
Features
- Highest efficiency
- Significantly more efficient than Class-AB
- Reduce thermal solution with 75% less heat dissipation than Class-AB
- Start/stop operation down to 4.5 V
- AEC-Q100 Qualified for automotive applications:
- Temperature grade 1: –40°C to 125°C TA
- HBM ESD Classification level 2
- CDM ESD Classification level C4B
- 27 W, 10% THD into 4 Ω at 14.4 V
- Drives 4 Ω and 2 Ω loads
- Load diagnostics
- Output open, shorted load
- Output-to-battery or ground shorts
- Tweeter connected
- Designed to meet CISPR25-L5 EMC specification
- Class-D at 2.1 MHz, no AM interference
- Spread Spectrum mode
- Protection
- 40 V Load dump
- Output short protection
- DC offset and over temperature
- Fortuitous open ground and power tolerant
- Audio inputs
- 4 Channel single-ended analog input
- 10 dB, 16 dB or 28 dB Gain option
- Supports parallel channel drive (PBTL)
- Audio performance into 4 Ω at 14.4 V, 1 kHz
- THD+N < 0.1%
- 42 µVRMS Output Noise
- 75 dB PSRR
- Efficiency > 80%
- Special features
- Programmable clip detection
- Load current limiter
- Thermal gain foldback
- Fast and autonomous startup diagnostics
- AC load impedance measurement with
< 10 mA load current
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Description
The TPA6304-Q1 device is a four-channel analog-input Class-D Burr-Brown™ audio amplifier that implements a 2.1 MHz PWM switching frequency that enables a cost optimized solution in a very small 2.7 cm2 PCB size, high impedance single ended inputs and full operation down to 4.5 V for start/stop events.
The TPA6304-Q1 Class-D audio amplifier has an optimal design for use in entry level automotive head units that provide analog audio input signals as part of their system design. The Class-D topology dramatically improves efficiency over traditional linear amplifier solutions.
The output switching frequency can be set either above the AM band, which eliminates the AM band interference and reduces output filter size and cost, or below AM band to further optimize efficiency.
The device is offered in a 44 pin HTSSOP package with the exposed thermal pad up.
More Information and Sample Availability
Full data sheet and other information are available. Request now
Prototype samples are available (PTPA6304QDDVRQ1). Request now
Technical documentation
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | TPA6304-Q1 45-W, 2.1-MHz Analog Input 4-Channel Automotive Class-D Burr-Brown™ Audio Amplifier with Load Dump Protection and I2C Diagnostics datasheet (Rev. A) | Nov. 11, 2019 |
| User guide | TPA6304-Q1 Evaluation Module (Rev. A) | Oct. 14, 2020 | |
| Technical articles | Concerned about transitioning from Class-AB to a Class-D? Well, you shouldn’t be. | Oct. 10, 2019 | |
| White paper | Automotive Audio Design Considerations to Minimize Amplifier Size & Thermal Load | Oct. 09, 2019 | |
| Application note | Diagnostics and Protections in Automotive Audio Systems (Rev. A) | Sep. 24, 2019 | |
| Application note | Inductor Selection Guide for 2.1 MHz Class-D Amplifiers (Rev. A) | Sep. 05, 2019 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- 2.1-Mhz switching frequency
- 4-channel Analog input Class-D automotive audio amplifier
- 27-W/Ch at 10% THD+N into 4-Ω with a 14.4-V supply
- 45-W/Ch at 10% THD+N into 2-Ω with a 14.4-V supply
- I2C diagnostics and protection
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
Design files
-
download TIDEP-01020 Gerber.zip (3545KB) -
download TIDEP-01020 BOM.zip (1026KB) -
download TIDEP-01020 Assembly Drawing.zip (2254KB) -
download TIDEP-01020 PCB.zip (170KB) -
download TIDEP-01020 CAD Files.zip (11471KB)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| HTSSOP (DDV) | 44 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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