Toshiba Launches Current-Feedback 4ch Power Amplifier IC for Car Audio with Built-In Full-Time Offset Detection

TOKYO — (BUSINESS WIRE) — April 27, 2016Toshiba Corporation's (TOKYO:6502) Storage & Electronic Devices Solutions Company today announced the launch of “TCB501HQ,” 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 June 2016.

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Toshiba: current-feedback 4-channel power amplifier IC "TCB501HQ" with enhanced offset detection for ...

Toshiba: current-feedback 4-channel power amplifier IC "TCB501HQ" with enhanced offset detection for car audio. (Photo: Business Wire)

The new IC integrates a newly developed, full-time offset detection circuit. Conventional offset detection during sound reproduction is difficult. Toshiba’s new IC detects output DC offset voltage caused by leakage from the input capacitor and other sources, even during sound reproduction, and prevents speaker burnout.

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.

 

Specifications

Part Number   TCB501HQ
Maximum Output Power

49W x 4ch (Vcc=15.2V, RL=4Ω, MAXPOWER)

Operating Supply Voltage Range

6V-18V (4Ω), 6V-16V (2Ω)
Output Offset Voltage 90mV
Output Noise Voltage 33uV (BW=A-weight)
Embedded Functions and Features
  • High output power and low distortion
  • Built-in mute and standby functions, offset detection, short circuit detection, and High-side switch driver.
  • 6V operation (engine idling reduction capability)
  • A range of protection circuits (thermal, overvoltage, output to VCC, output to GND, output to output protections)
Package HZIP25-P-1.00F
Sample Price ( with tax)   500 yen
 

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