High Power Hybrid Mosfet Class D Quality Audio Amplifier

February 8, 2012 amplifier, chip, circuit diagram, diy

High Power Hybrid Mosfet Class D Quality Audio Amplifier

The Hybrid IC LM4651 and LM4652 car and the power MOSFET provides an excellent high power, class-D power amplifier.

The LM4651 is an absolute classic pre amplifier beat contain a broad modulator IC. The IC contains the world shortly, under present conditions, most of the modulation, and turn heat down to develop the protection. The LM4651also includes a lifetime, which comes to the end reduces the flapping wide modulation current. The LM4652 is an absolutely H-bridge IC power MOSFET in a TO-220 package includes power.

The LM4652 has a wide variety of characters are called to inform the LM4651 when the die is selection of hot LM4652 larger than the persistence. Together, these two simple IC, optimized largest selection of music form energy company with protection usually only seen in the AB amplifier classification. A few components on the outside and little information in the coming years to keep the IC and small board area contributes to EMI control.

Near the railway switching contributes significantly more effective in evaluating the classification of AB amplifier. This excellent first choice significantly reduces the size of the damage, if hot in the evaluation of an integrated circuit AB of the same classification performance. This choice of two smart is the best for sandwiches under control and self-controlled music system.

Features
Conventional pulse width modulation.
Switching frequency of the external controller.
50kHz to 200kHz switching frequency range.
Integrated error amp and feedback amp.
Turn the soft-start and undervoltage lockout.
Overmodulation protection (soft clipping).
Externally controllable output current limiting and thermal protection.
Self-diagnostic safety.