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STMicroelectronics STPA008 MOSFET 四通道桥接功率放大器

意法半导体 STPA008 MOSFET 四通道桥接功率放大器，是一款突破性 AB 级音频功率放大器，用于大功率汽车无线电应用。完全互补的 P 沟道/N 沟道输出结构可实现轨对轨的输出电压摆幅。STPA008 具有高输出电流与最低程度的饱和损耗。这款产品具有无与伦比的失真性能，在车载无线电领域设立了新的功率标杆。

The STPA008 can operate down to 6V making the IC compliant to the most recent OEM specifications for low voltage operation (so called "start-stop" battery profile during engine stop). This helps car manufacturers reduce the overall emissions, contributing to environment protection.

特性

  • High output power capability
    • 4x50W/4Ω Max.
    • 4x28W/4Ω @ 14.4V, 1kHz, 10%
    • 4x72W/2Ω Max.
  • MOSFET output power stage
  • 2Ω driving capability
  • Operates down to 6V (suitable for start-stop car operation)
  • Excellent GSM noise immunity
  • Hi-Fi class distortion
  • Low output noise
  • High immunity to RF noise injection
  • Standby function
  • Mute function
  • Automute at minimum supply voltage detection
  • Low external component count
  • Internally fixed gain (26dB)
  • 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
    • Fortuitous open GND
    • Reversed battery
    • Electrostatic discharge

Functional Block Diagram

框图 - STMicroelectronics STPA008 MOSFET 四通道桥接功率放大器
发布日期: 2015-05-20 | 更新日期: 2022-03-11