The MP7751 is an analog input, Class-D audio amplifier that can drive stereo speakers in a bridge-tied-load configuration. It is one of MPS’s suite of fully integrated audio amplifiers, which dramatically reduce solution size by integrating the following:
240mΩ power MOSFETs
Start-up / Shutdown pop elimination
Short-circuit protection circuits
Advanced EMI performance
The MP7751 utilizes a stereo BTL structure capable of delivering 20W per channel into 8Ω speakers at an 18V power supply. MPS's Class-D audio amplifiers exhibit the high fidelity of a Class-AB amplifier at high efficiencies.
The MP7751 includes an internal circuit that allows the system to automatically shut down when no audio signal is detected. This feature is ideal for energy-saving products and battery-operated applications.
It also has an adjustable power limit function. The PLIMIT circuit sets a limit on the output peak-to-peak voltage. This is accomplished by limiting the duty cycle to a fixed maximum value. This limit can be thought of as a virtual voltage rail, which is lower than the supply connected to PVCC. The MP7751 is available in a TSSOP-28EP package.
The EV7751-F-00A is the evaluation board for the MP7751, a 20W stereo BTL Fix Freuquency Class D Audio Amplifier. It is one of MPS’ products of fully integrated audio amplifiers which dramatically reduce solution size by integrating the following:
240mΩ power MOSFETs
Startup / Shutdown pop elimination
Short circuit protection circuits
Advanced EMI performance
The MP7751 utilizes Bridge Tied Load output structure capable of delivering stereo 20W into 8Ω speakers. It features in automatic shutdown function which can save power in battery-used system. The PLIMIT function is useful for limiting total output power by simply adjust a DC reference voltage at PLIMIT pin. MPS Class D Audio Amplifiers exhibit the high fidelity of a Class A/B amplifier at high efficiency.
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