Car audio power amplifier protects speaker
A four-channel power amplifier IC from Toshiba Electronics Europe operates at 49W/channel and is for automotive audio applications. The TCB501HQ provides high output power and low distortion, and detects output offset voltage, says the company.
The IC integrates a current feedback system which prevents sound quality degradation at wide bandwidths, improving sound consistency.
Conventional offset detection during sound reproduction is particularly difficult to manage. The TCB501HQ integrates a newly developed, full-time offset detection circuit. It also detects output DC offset voltage caused by leakage from the input capacitor and other sources, even during sound reproduction. Additional embedded protection circuits include thermal, over-voltage, output to VCC, output to GND, output to output protection and a short circuit detection function.
The IC built-in mute and standby functions, a high-side switch driver and 6V operation and is housed in a HZIP25-P-1.00F package.