Automotive audio power amplifier ICs
Toshiba’s audio power amplifier for in-vehicle adopts the low on-resistance 0.13um process with the leading edge and top-class in the industry, and realize the high quality design by including the various protection functions and the original safety function for in-vehicle.
In addition, the audio amplifier can realize the low-power consumption design equaled to class-d amplifier by using the TB class that is the original linear high-efficiency technology.
The amplifier contributes to the safety, high reliability and low-power consumption of products for customer.
Lineup
4-channel Audio Power Amplifier IC (Recommended Products)
| Process | Part Number | Max Power | Class | Voltage Gain | I2C Bus | Output DC Offset Det. | Clip Det. | Short-Circuit Det. | High-Side Switch | Half Short Det. | Speaker Burning Prevention | 2Ω Load |
GSM | 6V Crui-sing | Package | Status | |
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| VCC= 15.2 V | VCC= 14.4 V | ||||||||||||||||
| BiCD0.13 μm |
TB2952AHQ | 49W | 45W | AB | 26dB/ 12dB |
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HZIP25 | MP | ||
| 49W | 45W | KB** | 26dB/ 16dB |
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HZIP25 | |||||
| CD0.13μm | 45W | 40W | AB | 26dB | |
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HZIP25 | |||||||
| HSOP36 | |||||||||||||||||
| 49W | 44W | AB | 26dB | * |
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HZIP25 | ||||||
| 49W | 44W | AB | 26dB | * |
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HZIP25 | |||||||
| 49W | 45W | AB | 26dB | |
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HZIP25 | ||||||
| 49W | 45W | TB*** | 26dB/ 16dB |
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HSOP36 | |||||
| 45W | 40W | TB*** | 26dB/ 16dB |
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HSOP36 | ||||||
* Full time output DC offset detection(TOSHIBA Patent)
** KB: Knitted BTL(Bridge Tied Load)
*** TB: Tied BTL(Bridge Tied Load)
1-channel Audio Power Amplifier IC
| Process | Part Number | Max Output | Class | Voltage Gain | Thermal Det. | Speaker-Open Det. | Short-Circuit Det. | Over-Voltage Det. | Comment | Package | Status | |
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| VCC= 16 V | VCC= 12 V | |||||||||||
| BiCD0.13μm | 5W | 3W | AB | 26dB (variable) |
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Vehicle Sound for Pedestrian | TSSOP16 | MP | |
Technical topics
4-channel audio power amplifier IC concept
- CD 0.13μm Process
Higher toughness process for +B Surge
- Higher Toughness for Immunity Noise
Easy to design for EMI/EMC/BCI etc
- Full-time output DC offset detection (TOSHIBA Patent)
The IC can perform full-time DC offset voltage detection at speaker terminals. It is possible to realize a system that prevents the speaker voice coil burning caused by the occurrence of DC offset voltage.
- Small flat package
- New Linear High-efficiency AMP “Class-TB”
Temperature reduced approx. 20-40 degrees C compared with other AMPs.
- 6V cruising design
- Diagnosis function
Temperature data of Class-AB/TB AMP
Test Condition
Vcc=13.2V, f=1kHz, RL=4Ω, Pout=0.4W x 4ch operated, Ta=25℃,
Heat sink Thermal resistance : 6.5℃/W (Size : 85×85×2mm at Aluminum)
Toshiba’s original linear high-efficiency amplifier: Class-TB achieves efficiency TCB701FNG(50 W)/702FNG (45 W)
High efficiency (TOSHIBA Patent)
Power dissipation comparison
- vs Conventional Class-AB AMP >>> -80% reduction
- vs Digital Class-D AMP >>> Closer under Pout <4 W
Low BOM costs
Reasonable external parts
- vs Conventional Class-AB AMP >>> Same
- vs Digital Class-D AMP >>> Less than half
Full-time output DC offset detection (TOSHIBA Patent)
- The IC can perform full-time DC offset voltage detection at speaker terminals. It is possible to realize a system that prevents the speaker voice coil burning caused by the occurrence of DC offset voltage.
應用
Queries about purchasing, sampling and IC reliability
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