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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TLE75620-EST датащи(PDF) 44 Page - Infineon Technologies AG |
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TLE75620-EST датащи(HTML) 44 Page - Infineon Technologies AG |
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44 / 81 page  Datasheet 44 Rev. 1.0 2017-11-23 TLE75620-EST SPIDER+ 12V Protection Functions 8 Protection Functions 8.1 Over Load Protection The TLE75620-EST is protected in case of over load or short circuit of the load. There are two over load current thresholds (see Figure 21): • IL(OVL0) between channel switch ON and tOVLIN • IL(OVL1) after tOVLIN Every time the channel is switched OFF for a time longer than 2 * tSYNC the over load current threshold is set back to IL(OVL0). Figure 21 Over Load current thresholds In case the load current is higher than IL(OVL0) or IL(OVL1), after time tOFF(OVL) the over loaded channel is switched OFF and the according diagnosis bit ERRn is set. The channel can be switched ON after clearing the protection latch by setting the corresponding HWCR_OCL.OUTn bit to “1”. This bit is set back to “0” internally after de- latching the channel. Please refer to Figure 22 for details. Figure 22 Latch OFF at Over Load 8.2 Over Temperature Protection A temperature sensor is integrated for each channel, causing an overheated channel to switch OFF to prevent destruction. The according diagnosis bit ERRn is set (combined with Over Load protection). The channel can INn IL(OVL) t t OverLoadStep.emf tOVLIN OUT.OUTn IL(OVL0) IL(OVL 1) INn ILn t t OverLoad.emf tOFF(OVL) IL(OVLn) OUT.OUTn SPI command to set HWCR_OCL.OUTn = 1b t t ERRn 1 0 0 t 1 0 0 HWCR_OCL.OUTn |
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