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参数资料
| 型号： | TB2912HQ |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 27 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| 封装： | 1 MM PITCH, PLASTIC, HZIP-25 |
| 文件页数： | 4/40页 |
| 文件大小： | 580K |
| 代理商： | TB2912HQ |
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TB2912HQ
2006-04-28
12
(3)
Description for permanent diagnosis
This IC can provide permanent diagnosis under the following conditions, whether they occur before
or after turning ON:
-Short to GND
-Short to VCC
-Output to output short circuit
-Output offset detection
-Current detection for tweeter open
This permanent diagnosis is available not only with the diagnostic cycle byte: IB1 D6 set at 1 but
also when set at 0.
Additionally, the signal can be obtained by entering just a read command. It is not necessary to
write the data.
With permanent diagnosis fault detection, the first read data after fault removal will still show a
Fault. Therefore, it is necessary to obtain 3 or more readings in order to prevent a miss judgment.
For example, the speaker sometimes makes a large counter electro motive force which this IC could
recognize as a fault event.
Additionally, this permanent diagnosis is automatically on after the turning on diagnosis operation
finished therefore there is no need to send the extra command.
Figure 7
Permanent Diagnosis Timing Chart for Each Short Detection
Turn On diagnostic
acquisition time (80 ms typ.)
Turn On diagnostic
DATA permitted time
READ DATA
WRITE DATA
READ DATA
result faulty
FAULT
event
Pin10
ripple
voltage
READ DATA
result not faulty
FAULT
removed
READ DATA
result faulty
Permanent diagnostic DATA
permitted time
相关PDF资料 |
PDF描述 |
|---|---|
| TB2913HQ | 29 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TB2921AHQ | 29 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TB2921HQ | 29 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
| TB2922HQ | 46 W, 2 CHANNEL, AUDIO AMPLIFIER, PZFM12 |
| TB2923AHQ | 29 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TB2913HQ | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:Maximum Power 47 W BTL 】 4-ch Audio Power IC |
| TB2915AHQ(O) | 制造商:Toshiba America Electronic Components 功能描述:IC AMP BTL AUDIO 45W 4CH HZIP25 |
| TB2915HQ(O) | 功能描述:音频放大器 45W x 4-CH high-EFF car power amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TB2921HQ(O) | 功能描述:音频放大器 50W x 4-CH class-AB car power amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TB2922HQ | 制造商:Toshiba 功能描述:Pure complementary P-ch & N-ch DMOS output stage, BTL output form |
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