深圳市谷科智电子有限公司

描述

The TPA3113D2 is a 6-W (per channel) efficient, Class-D audio power amplifier for driving bridged-tied stereo speakers. Advanced EMI Suppression Technology enables the use of inexpensive ferrite bead filters at the outputs while meeting EMC requirements. SpeakerGuard™ speaker 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 TPA3113D2 can drive stereo speakers as low as 4 Ω. The high efficiency of the TPA3113D2, 87%, eliminates the need for an external heat sink when playing music.

The outputs are also fully protected against shorts to GND, VCC, and output-to-output. The short-circuit protection and thermal protection includes an auto-recovery feature.

特性6-W/ch into an 8-Ω Loads at 10% THD+N From a

10-V Supply12-W into a 4-Ω Mono Load at 10% THD+N From

a 10-V Supply87% Efficient Class-D Operation Eliminates Need

for Heat SinksWide Supply Voltage Range Allows Operation

from 8 V to 26 VFilter-Free OperationSpeakerGuard Speaker Protection Includes

Adjustable Power Limiter Plus DC ProtectionFlow-Through Pinout Facilitates Easy Board

LayoutRobust Pin-to-Pin Short-Circuit Protection and

Thermal Protection With Auto Recovery OptionExcellent THD+N and Pop-Free PerformanceFour Selectable, Fixed Gain SettingsDifferential InputsAPPLICATIONSTelevisionsConsumer Audio EquipmentMonitors