Texas Instruments has introduced three new analog-input, class-D stereo amplifiers for use in soundbars, after-market automotive solutions, portable audio docks and LCD televisions.
The TPA3116D2, TPA3118D2 and TPA3130D2 feature a very high programmable switching rate and wide power supply range, enabling audio output that is both high-quality and highly efficient.
The devices are pin-to-pin and software compatible and can support a single-layer printed circuit board (PCB), enabling cost savings by allowing designers to reuse a single layout for multiple designs.
A supply range of 4,5 V to 26 V enables simultaneous operation of line power and battery power on the same board for longer battery life in soundbars and portable audio docks. Thermally efficient FETs allow 30 W x 2 operation without the need for a heatsink, or 50 W x 2 with a heatsink (TPA3116D2 only).
Programmable switching rates of 400 kHz to 1,2 MHz allow inductor filter-free operation and interference avoidance for clear audio with no distortions. The ICs’ closed-loop design provides excellent power supply rejection ratio (PSRR) and slower edge rates for waveform switching to improve electromagnetic interference (EMI) performance. RDS(on) of 120 m at 30 W x 2 improves efficiency by decreasing resistance during operation.
An evaluation module and SPICE model are available for the TPA3116D2, TPA3118D2 and TPA3130D2, allowing designers to evaluate system-level performance and quickly integrate the amplifiers into product designs.
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