Current-Feedback 4-channel Automotive Audio Power Amplifier IC with Built-In Full-Time Offset Detection: TCB502HQ

This photo shows the TCB502HQ .

Toshiba Corporation’s Storage & Electronic Devices Solutions Company today announced the launch of the TCB502HQ, a 4-channel power amplifier IC that detects output offset voltage that is a factor in speaker burnout. Mass production is scheduled to start in December 2016.

To respond to growing demand for superior sound quality of car audio, the new IC integrates a current-feedback system of the type adopted in high-end hi-fi audio. This prevents sound quality degradation at wide bandwidths and offers consistent sound quality, considering overtone of musical instruments or human voice.

The new IC also integrates a newly developed, full-time offset detection circuit. It detects offsets generated at the output stage even during playback and contributes to reduction of field failures, thus helping ensure high reliability.

  • Maximum Output Power:
    49W×4ch(VCC=15.2V, RL=4Ω, MAXPOWER)
  • Output Noise Voltage: 45µVrms (BW=DIN AUDIO)
  • Operating Supply Voltage: 6 to 18 V (4Ω), 6 to 16 V (2Ω)
  • Package: HZIP25-P-1.00F

Embedded Functions and Features

  • High output and low distortion
  • Built-in mute and standby functions, offset detection, and short-circuit detection
  • 6 V operation (engine idling reduction)
  • A range of protection circuits (thermal, overvoltage, output to VCC, output to GND, output to output)

For product detail.


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