Concept
We are committed to zero defects when it comes to our 4-channel power amplifier ICs. Toshiba exerts its unique high-reliability and high-voltage design technology to implement strict production control. Additionally, Toshiba has continually improved its 4-channel power amplifier ICs to reduce noise and tune high-frequency performance to enhance sound quality.The latest addition to our product portfolio is an eco-friendly class-KB amp with self-diagnostic capabilities. Toshiba also offers one-of-a-kind products featuring low ON-resistance made with a new BiCD process, new packages and etc.
Roadmap
Power Dissipation Comparisons Between Class-AB and Class-KB Amps
Toshiba's proprietary high-efficiency class-KB amp helps reduce heat dissipation, compared to general class-AB amps. The class-KB amp also helps reduce power loss even in large-amplitude mode.
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Calculation conditions
- Amp use: 4 hours per day; 365 days per year
- Amp's audio output power: 2 W
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Life cycle assessment (LCA) calculation conditions
- Overall gasoline-to-amp energy conversion efficiency: 18.9%
- Gasoline-to-power conversion factor: 0.104 L/kWh
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Product Lineup
| Part Number | Max Output | Max Output | Class | Voltage
Gain | I2C
Bus | Output
DC
Offset
Det. | Clipping
Det. | Short-
Circuit
Det. | High-
Side
Switch | Half-
Short
Detection | Speaker
Burning
Prevention | 2-Ω
Load | Remarks |
VCC =
15.2V | VCC =
14.4 V |
| TB2941HQ |
49 W |
44 W |
AB |
26 dB |
|
Y |
|
|
Y |
|
|
Y |
Under Development |
| TB2931HQ |
49 W |
44 W |
AB |
26 dB |
|
Y |
|
Y |
|
Y |
|
Y |
|
| TB2938HQ |
49 W |
44 W |
AB |
26 dB |
|
Y |
|
Y |
|
Y |
Y |
|
|
| TB2925HQ |
49 W |
44 W |
KB |
26 dB |
|
Y |
|
Y |
|
|
|
Y |
Under Development; cross incorrect wiring |
| TB2952HQ |
49 W |
44 W |
AB |
26 dB/12 dB |
Y |
Y (I2C) |
Y (I2C) |
Y (I2C) |
|
Y (I2C) |
|
Y |
Under Development |
| TB2975HQ |
49 W |
44 W |
KB |
26 dB/16 dB |
Y |
Y (I2C) |
Y (I2C) |
Y (I2C) |
|
Y (I2C) |
|
Y |
Under Development |
| TB2959HQ |
47 W |
42 W |
AB |
26 dB |
|
|
|
|
|
|
Y |
|
AUX-IN |
Y: Available
Y (I2C): Supported via the I2C interface
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