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Homepage > Products > Line Card > Silicon Laboratories > Si824x
Company: Silicon Laboratories Inc.
Product Group: Audio/Video
Parts No.: Si824x
Contact: sales@edom.com.tw


Description:
High-power audio systems are adopting digital audio technology and evolving toward lower-power, "green" products that meet Energy Star™ guidelines. Class D audio systems have begun penetrating the high-end markets, where low noise, extremely good THD performance and very high output power are required in consumer and industrial applications. The Si824x audio drivers are isolated Class D gate drivers that power audio systems delivering from 30 W up to 1000 W of audio power.

Based on Silicon Labs’ proprietary isolation technology, the Si824x audio drivers incorporate input-to-output isolation which enables level-translation of signals without additional external circuits. The Si824x audio drivers feature adjustable dead-time control for achieving optimal THD, overlap protection that safeguards against shoot-through current damage, robust immunity to latch-up and high-voltage transients and lower BOM costs and PCB footprints compared to non-isolated gate drive solutions.


Specification:

Class D Audio Driver Products

 Family

 Input Type

 Outputs

 Isolation Rating

 Drive Strength

 UVLO Voltage

 Package
 Si8241  PWM  High Side / Low Side  2.5 kVrms  0.5 A  8 or 10 V  NB SOIC-16
 Si8244  PWM  High Side / Low Side  2.5 kVrms  4.0 A  8 or 10 V  NB SOIC-16

       Si824x Reference Design





Applications:
Adjustable Dead-Time control
  • Enables precise synchronization of pull-up and pull-down signals to minimize THD
Input-to-output isolation
  • Enables level-shifting from input supply to output supply with no external components required
  • Output voltage inherently supports 0 V reference, eliminating expensive DC-blocking capacitors
  • High-voltage and low-voltage domains are electrically isolated, eliminating noise transfer between domains
High immunity to latch-up
  • Prevents system from going into destructive high-power modes due to voltage surges at either start-up or during operation
  • Enables simpler system design with fewer BOM components
Ultra-low propagation delay
  • Supports modulation frequencies of up to 8 MHz
  •  Very low jitter enables robust system performance


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