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參數(shù)資料
| 型號： | TDA7565 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 40 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM27 |
| 封裝： | FLEXIWATT-27 |
| 文件頁數(shù)： | 8/19頁 |
| 文件大?。?/td> | 205K |
| 代理商： | TDA7565 |
Low voltage "start-stop" operation
TDA7565
Doc ID 9800 Rev 4
6
Low voltage "start-stop" operation
The most recent OEM specification are requiring automatic stop of car engine at traffic lights
in order to reduce emissions of polluting substances. The TDA7565, thanks to its integrated
switching voltage converter, allows a continuous operation when battery falls down to 6/7 V
during such conditions, without producing pop noise. The maximum system power will be
reduced accordingly.
The internal converter must be enabled and programmed in order to supply 15 V (D3 (IB2) = 0;
D6 (IB2) = 0). The suggested voltage frequency switching is 150 kHz (D6 (IB1) = 1; D7 (IB1) = 0).
The following curve is a worst case condition for a start-stop system. The TDA7565, with the
switching converter powered on, can sustain this cranking curve without any audio signal
interruption.
Figure 7.
Worst case condition for a start-stop system diagram
Vb1 = 12 V, Vb2 = 6 V, Vb3 = 7 V
Ri ≤ 0.01 Ω (internal resistor of power supply)
Recovery time from test start to tr is 1 s
tr = 2 ms
t1 = 1 ms (the shortest time, at cranking simulation power supply, is 5 ms)
t2 = 15 ms
t3 = 1 s
tf = 0.5 s
Vb1
V
Vb3
Vb2
tf
t3
t2
t1
tr
t
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| TDA7565_08 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Quad power amplifier with built-in voltage converter |
| TDA7565_10 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Quad power amplifier with integrated step-up converter |
| TDA7566 | 功能描述:音頻放大器 MULTI F DUAL AMP RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TDA7566_06 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:4x40W multifunction quad power amplifier with built-in diagnostics features |
| TDA7566_10 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:4 x 40 W multifunction quad power amplifier with built-in diagnostics features |
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