TPA6304-Q1 Series

45-W, 2.1-MHz analog input 4-channel automotive Class-D Burr-Brown™ audio amplifier

Catalog

45-W, 2.1-MHz analog input 4-channel automotive Class-D Burr-Brown™ audio amplifier

Part	Supplied Contents	Board Type	Utilized IC / Part	Max Output Power x Channels @ Load	Max Output Power x Channels @ Load [custom]	Max Output Power x Channels @ Load [x]	Voltage - Supply [Max]	Voltage - Supply [Min]	Output Type	Operating Temperature [Min]	Operating Temperature [Max]	Mounting Type	Package / Case [custom]	Package / Case [custom]	Package / Case	Type	Supplier Device Package
Texas Instruments TPA6304Q1EVM	Board(s)	Fully Populated	TPA6304-Q1	45 W	2 Ohm	4	18 V	4.5 V	4-Channel (Quad)
Texas Instruments TPA6304QDDVRQ1				55 W		4	18 V	4.5 V	4-Channel (Quad)	-40 °C	125 °C	Surface Mount	44-PowerTSSOP	0.244 in	6.2 mm	Class D	44-HTSSOP

Catalog

45-W, 2.1-MHz analog input 4-channel automotive Class-D Burr-Brown™ audio amplifier

Key Features

• Highest efficiency Class-DSignificantly more efficient than Class-ABReduce thermal solution with 75% less heat dissipation than Class-ABStart/stop operation down to 4.5 VAEC-Q100 Qualified for automotive applications:Temperature grade 1: –40°C to 125°C TAHBM ESD Classification level 2CDM ESD Classification level C2B27 W, 10% THD into 4 Ω at 14.4 VDrives 4 Ω and 2 Ω loadsLoad diagnosticsOutput open, shorted loadOutput-to-battery or ground shortsTweeter connectedDesigned with advanced gate drive to meet CISPR25-L5 EMC specificationClass-D at 2.1 MHz, no AM interferenceSpread Spectrum mode, Phase Offset, Slew Rate ControlProtection40 V Load dumpOutput short protectionDC offset and over temperatureFortuitous open ground and power tolerantAudio inputs4 Channel single-ended analog input10 dB, 16 dB, 22 dB or 28 dB Gain optionSupports parallel channel drive (PBTL)Audio performance into 4 Ω at 14.4 V, 1 kHzTHD+N < 0.006%42 µVRMSOutput Noise80 dB PSRREfficiency > 80%Special featuresProgrammable clip detectionLoad current limiterThermal gain foldbackFast and autonomous startup diagnosticsAC load impedance measurement with < 10 mA load currentHighest efficiency Class-DSignificantly more efficient than Class-ABReduce thermal solution with 75% less heat dissipation than Class-ABStart/stop operation down to 4.5 VAEC-Q100 Qualified for automotive applications:Temperature grade 1: –40°C to 125°C TAHBM ESD Classification level 2CDM ESD Classification level C2B27 W, 10% THD into 4 Ω at 14.4 VDrives 4 Ω and 2 Ω loadsLoad diagnosticsOutput open, shorted loadOutput-to-battery or ground shortsTweeter connectedDesigned with advanced gate drive to meet CISPR25-L5 EMC specificationClass-D at 2.1 MHz, no AM interferenceSpread Spectrum mode, Phase Offset, Slew Rate ControlProtection40 V Load dumpOutput short protectionDC offset and over temperatureFortuitous open ground and power tolerantAudio inputs4 Channel single-ended analog input10 dB, 16 dB, 22 dB or 28 dB Gain optionSupports parallel channel drive (PBTL)Audio performance into 4 Ω at 14.4 V, 1 kHzTHD+N < 0.006%42 µVRMSOutput Noise80 dB PSRREfficiency > 80%Special featuresProgrammable clip detectionLoad current limiterThermal gain foldbackFast and autonomous startup diagnosticsAC load impedance measurement with < 10 mA load current

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 cm2PCB 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. 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 cm2PCB 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.