The STMicroelectronics HFA80A automotive-grade analog-input class-D audio amplifier combines high efficiency, small size, and a low bill of materials, with load diagnostics optimized for automotive and native electromagnetic compatibility (EMC).
With its feedback-before-filter topology and 2MHz nominal PWM frequency, the HFA80A lets designers optimize the output filter for the targeted performance and achieve a compact outline with small component values. Spread-spectrum operation simplifies meeting the mandatory CISPR 25 specification, with no additional EMC-specific filtering required.