Monolithic Power Systems (MPS) MP7758 Audio Amplifiers
https://www.electronics-lab.com/monolithic-power-systems-mps-mp7758-audio-amplifiers/
Monolithic Power SystemsMP7758 Audio Amplifiers are inductor less, fixed frequency, analog input Class-D audio amplifiers that drives power stereo speakers in a bridge-tied load configuration. These amplifiers are completely integrated thus reducing the solution size. The MP7758 audio amplifiers integrate 240mΩ power MOSFETs and short-circuit protection circuits. These audio amplifiers feature start-up/shutdown pop elimination, advanced […]
Maxim Integrated MAX98361 Plug-and-Play Digital Class-D Amplifiers
https://www.electronics-lab.com/maxim-integrated-max98361-plug-and-play-digital-class-d-amplifiers/
Maxim Integrated MAX98361 Plug-and-Play Digital Class-D Amplifiers are easy-to-use, low-cost, digital pulse-code modulation (PCM) input amplifiers featuring industry-leading, Class-AB audio performance with Class-D efficiency. The MAX98361 has a digital audio interface that automatically recognizes different PCM and TDM clocking schemes, eliminating the need for I2C programming. This easy-to-use amp allows users to supply power, LRCLK, […]
10W Class-D Stereo Audio Amplifier with Mute, Shutdown and Four Gain Settings
https://www.electronics-lab.com/10w-class-d-stereo-audio-amplifier-with-mute-shutdown-and-four-gain-settings/
This is a Class-D Stereo audio amplifier project that provides 10W stereo output. The amplifier includes Gain control using 2 x Jumpers, Mute function, and shutdown function. RCA female connectors are provided for the audio source input, screw terminals are provided for an easy interface with speakers and power supply input. The project was built […]
Maxim’s MAX4295 Circuit provides Class D motor control
https://www.electronics-lab.com/maxims-max4295-circuit-provides-class-d-motor-control/
Class D audio amplifiers provide a dual benefit for battery-powered portable devices (Figure 1). They enhance battery life, and they produce much less power dissipation than do their linear cousins. Those features make Class D amplifiers ideal candidates for controlling speed and direction in small electric motors. The standard application circuit for a Class D audio […]
5 W + 5 W Dual BTL Class-D Audio Amplifier
https://www.electronics-lab.com/5-w-5-w-dual-btl-class-d-audio-amplifier/
The project described here is a high-efficiency dual BTL class-D audio amplifier with single supply operations. The project was built using TDA7491LP13TR from ST. The low profile PCB design can fit in a small area, operating power supply 9-12V DC, Project supports single-ended or differential audio signal inputs. Jumpers are provided to set the various […]
Single-Ended, 2-Channel GaN Class D Amplifier – Evaluation Board
https://www.electronics-lab.com/single-ended-2-channel-gan-class-d-amplifier-evaluation-board/
The EVAL_AUDAMP24 e-mode GaN HEMT-based evaluation board from Infineon Technologies is a 2-channel, 225W/ch (4Ω at ±43V) or 250 W/ch (8Ω at ±63V) half-bridge class D audio power amplifier for high-end Hi-Fi audio systems. This evaluation board demonstrates how to use the IGT40R070D1 E8220 CoolGaN™ gallium nitride transistor together with the MERUS™ IRS20957SPBF controller IC, […]
Class D Amplifiers
https://www.electronics-lab.com/article/class-d-amplifiers/
Introduction In the previous tutorials, an important link has been established between the conduction angle of an amplifier and it’s efficiency. Indeed, high conduction angles-based amplifiers offer a very good linearity such as the class A Amplifiers but present a very limited efficiency, generally around 20 to 30 %. As the conduction angle is decreased, […]
Low Cost/Voltage 3W Class-D Stereo Audio Amplifier for Portable Gadgets
https://www.electronics-lab.com/low-cost-voltage-3w-class-d-stereo-audio-amplifier-portable-gadgets/
This low cost low voltage 3W class-D stereo amplifier is based on PAM8403 IC, The PAM8403 is a 3W, class-D audio amplifier. It offers low THD+N, allowing it to achieve high-quality sound reproduction. The new filter-less architecture allows the device to drive the speaker directly, requiring no low-pass output filters, thus saving system cost and […]
LTC3623 – Switching regulator doubles as Class-D audio amplifier
https://www.electronics-lab.com/ltc3623-switching-regulator-doubles-class-d-audio-amplifier/
Clemens Valens @ elektormagazine.com discuss about LTC3623 switching regulator which can be used as Class-D Audio Amplifier. Sure thing, Elektor has published several designs of adjustable power supplies based on switching regulators, so we know that doing this properly in a reproducible way and without making things overly complex requires some serious head scratching. The […]
How to Build a Class-D Power Amp
https://www.electronics-lab.com/build-class-d-power-amp/
Cezar Chirila @ allaboutcircuits.com shows how to build a Class-D amplifier which has amazing efficiency. What is a Class-D audio power amplifier? The answer could be just a sentence long: It is a switching amplifier. But in order to fully understand how one works, I need to teach you all its nooks and crannies. How to Build […]