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STMicroelectronics STPA003 Quad Bridge Power Amplifiers

STMicroelectronics STPA003 Quad Bridge Power Amplifiers are MOSFET class AB audio power amplifiers that are designed for high-power car radio. In addition to the outstanding output current capability and distortion performance, the STPA003 is extremely robust against several kinds of fortuitous misconnection. They are compliant to the most recent OEM specifications for low voltage operation (start-stop battery profile during engine stop). They include a DC offset detector and a high side driver or a clipping detector.

Features

  • High output power capability
    • 4 x 52W/4Ω max.
    • 4 x 30W/4Ω @ 14.4V, 1kHz, 10%
    • 4 x 85W/2Ω max.
    • 4 x 55W/2Ω @ 14.4V, 1kHz, 10%
  • MOSFET output power stage
  • Capable to operate in low voltage conditions
  • Excellent GSM noise immunity
  • Excellent 2Ω driving capability
  • Hi-Fi class distortion
  • Low output noise
  • Standby function and mute function
  • Automute at min. supply voltage detection
  • Low external component count
    • Internally fixed gain (26dB)
    • No external compensation
    • No bootstrap capacitors
  • On board 0.4A high side driver
  • Protections
    • Output short circuit to GND, to Vs, across the load
    • Very inductive loads
    • Overrating chip temperature with soft thermal limiter
    • Output DC offset detection
    • Load dump voltage
    • Fortuitous open GND
    • Reversed battery
    • ESD

Block Diagram

Block Diagram - STMicroelectronics STPA003 Quad Bridge Power Amplifiers
Published: 2015-01-05 | Updated: 2022-03-11