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TPA6130A2 热保护

Other Parts Discussed in Thread: TPA6130A2

In the datasheet of TPA6130A2,

TA Operating free-air temperature range is  –40°C to 85°C

TJ Operating junction temperature range is  –40°C to 125°C

And in page 6 there are two parameters of Thermal shutdown, 1. Threshold 180 °C   2. Hysteresis 35 °C

这2个参数代表什么含义?

Thermal   A 1 on this bit indicates a thermal shutdown was initiated by the hardware. When the temperature

drops to safe levels, the device will start to operate again, regardless of bit status. This bit is

clear-on-read.

当温度降到正常值,IC会重新启动,(不管寄存器的值);

温度降下来了,寄存器的值是否会自动变化?

  • 该器件工作时的环境温度范围是–40°C to 85°C;对应的结温范围是–40°C to 125°C;

    如果温度超过180°C,则会热保护;其迟滞是35°C(即当温度回落更低时解除过温保护,防止出现反复启停)

    热保护的状态位不会自动清除,除非MCU读取状态后才自动清除。实际上,只要温度降下来器件会自动重启。

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