2 x 15 W stereo Bridge Tied Load (BTL) audio amplifier

General description:

The TDA8946J is a dual-channel audio power amplifier with an output power of 2 × 15 W at an 8 Ω load and a 18 V supply. The circuit contains two Bridge Tied Load (BTL) amplifiers with an all-NPN output stage and standby/mute logic. The TDA8946J comes in a 17-pin DIL-bent-SIL (DBS) power package. The TDA8946J is printed-circuit board (PCB) compatible with all other types in the TDA894x family. One PCB footprint accommodates both the mono and the stereo products.

Features:

• Few external components
• Fixed gain
• Standby and mute mode
• No on/off switching plops
• Low standby current
• High supply voltage ripple rejection
• Outputs short-circuit protected to ground, supply and across the load
• Thermally protected
• Printed-circuit board compatible

Circuit Diagram:

Circuit Diagram for 2 x 15 W stereo Bridge Tied Load (BTL) audio amplifier

PCB layout:

PCB layout TDA8946

Datasheet for TDA8946J: Download

15W x 2Ch Low Frequency Power Amplifier Circuit for TV

Block Diagram for AN5275:

15W x 2Ch Low Frequency Power Amplifier Circuit for TV

TDA8932B Class-D audio amplifier

General description

The TDA8932B is a high efficiency class-D amplifier with low power dissipation. The continuous time output power is 2 × 15 W in stereo half-bridge application (RL = 4 Ω) or 1 × 30 W in mono full-bridge application (RL = 8 Ω). Due to the low power dissipation the device can be used without any external heat sink when playing music. Due to the implementation of thermal foldback, even for high supply voltages and/or lower load impedances, the device continues to operate with considerable music output power without the need for an external heat sink. The device has two full-differential inputs driving two independent outputs. It can be used in a mono full-bridge configuration (BTL) or in a stereo half-bridge configuration (SE).

Features

Operating voltage from 10 V to 36 V asymmetrical or ±5 V to ±18 V symmetrical

Mono-bridged tied load (full-bridge) or stereo single-ended (half-bridge) application

Application without heat sink using thermally enhanced small outline package

High efficiency and low-power dissipation

Thermally protected and thermal foldback

Current limiting to avoid audio holes

Full short-circuit proof across load and to supply lines (using advanced current protection)

Switchable internal or external oscillator (master-slave setting)

No pop noise

Full-differential inputs

Applications

Flat panel television sets

Flat panel monitor sets

Multimedia systems

Wireless speakers

Mini and micro systems

Home sound sets

Circuit Diagram

Circuit diagram for TDA8932B 2 x 15W

15+15W DUAL BRIDGE AMPLIFIER TDA7297

Circuit Diagram

Circuit diagram 15+15W DUAL BRIDGE AMPLIFIER