STMicroelectronics STPA003 四通道桥接功率放大器

意法半导体STPA003 四通道桥接功率放大器是一款 MOSFET 级 AB 音频功率放大器,用于大功率汽车无线电应用。除了出众的输出电流和失真性能外,STPA003 可有效防止数种偶然误接的影响。符合最新 OEM 低电压操作 规范(引擎停机过程中所谓的“即起即停”电池置换)配备有一个直流失调检测器和一个高侧驱动器或钳位检测电路。

特性

  • 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

框图 - STMicroelectronics STPA003 四通道桥接功率放大器
发布日期: 2015-01-05 | 更新日期: 2022-03-11