AN1042D
AN1042D is High Fidelity Switching Audio Amplifiers Using TMOS Power MOSFETs manufactured by onsemi.
- Part of the AN1042 comparator family.
- Part of the AN1042 comparator family.
AN1042/D High Fidelity Switching Audio Amplifiers Using TMOS Power MOSFETs
Prepared by: Donald E. Pauly ON Semiconductor Special Consultant http://onsemi.
APPLICATION NOTE
With the introduction of plementary bipolar power transistors in the late 1960s, switching amplifiers became theoretically practical. At low frequencies, bipolar transistors have switching efficiencies of 99% and will directly drive a low impedance speaker filter. The requirement for switching frequencies above 100 kHz resulted in excessive losses however. Bipolar drive circuitry was also plex because of its large base current requirement. With the advent of plementary (voltage/current ratings) TMOS power...
