SI8241BB-D-IS1

CLASS D AUDIO DRIVER WITH PRECISION DEAD-TIME GENERATOR

The Si824x isolated driver family combines two isolated drivers in a single package. The Si8241/44 are high-side/low-side drivers specifically targeted at high-power (>30 W) audio applications. Versions with peak output currents of 0.5 A (Si8241) and 4.0 A (Si8244) are available. All drivers operate with a maximum supply voltage of 24 V.

Based on proprietary isolation technology, the Si824x audio drivers incorporate input-to-output and output-to-output isolation, which enables level-translation of signals without additional external circuits as well as use of bipolar supply voltage up to ±750 V. The Si824x audio drivers feature an integrated dead-time generator that provides highly precise control for achieving optimal THD. These products also have overlap protection that safeguards against shoot-through current damage. The CMOS-based design also provides robust immunity from latch-up and high-voltage transients. The extremely low propagation delays enable faster modulation frequencies for an enhanced audio experience. The TTL level compatible inputs with >400 mV hysteresis are available in PWM input configuration; other options include UVLO levels of 8 V or 10 V. These products are available in narrow body SOIC packages.

• 0.5 A peak output
• PWM input
• High-precision linear programmable dead-time generator 0.4 ns to 1 us
• High latchup immunity >100 V/ns
• Up to 1500 Vrms output-output isolation, supply voltage of +/-750 V
• Input to output isolation for low noise (up to 2500 V)
• Up to 8 MHz operation
• Wide operating range -40 to 125 C
• Transient immunity >45 kV/us
• RoHS-compliant SOIC-16 narrow body

• Class D audio amplifiers