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TLE75602-ESD データシート(PDF) 45 Page - Infineon Technologies AG |
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TLE75602-ESD データシート(HTML) 45 Page - Infineon Technologies AG |
45 / 70 page Datasheet 45 Rev. 1.0 2017-11-23 TLE75602-ESD SPIDER+ 12V Diagnosis 9 Diagnosis The SPI of TLE75602-ESD provides diagnosis information about the device and the load status. Each channel diagnosis information is independent from other channels. An error condition on one channel has no influence on the diagnostic of other channels in the device (unless configured to work in parallel, see Chapter 7.3 for more details). 9.1 Over Load and Over Temperature When either an Over Load or an Over Temperature occurs on one channel, the diagnosis bit ERRn is set accordingly. As described in Chapter 8.1 and Chapter 8.2, the channel latches OFF and must be reactivated setting corresponding HWCR_OCL.OUTn bit to “1”. 9.2 Output Status Monitor The device compares each channel VDS with VDS(OL) (Low-Side channels and auto-configurable channels used as Low-Side switches), VOUT_S with VOUT_S(OL) (auto-configurable channels used as High-Side)and sets the corresponding DIAG_OSM.OUTn bits accordingly. The bits are updated every time DIAG_OSM register is read. • VDS < VDS(OL) → DIAG_OSM.OUTn = “1” (Low-Side channels and auto-configurable channels as Low-Side) • VOUT_S > VOUT_S(OL) → DIAG_OSM.OUTn = “1” (auto-configurable channels as High-Side) A diagnosis current IOL in parallel to the power switch can be enabled by programming the DIAG_IOL.OUTn bit, which can be used for Open Load at OFF detection. Each channel has its dedicated diagnosis current source. If the diagnosis current IOL is enabled or if the channel changes state (ON → OFF or OFF → ON) it is necessary to wait a time tOSM for a reliable diagnosis. Enabling IOL current sources increases the current consumption of the device. Even if an Open Load is detected, the channel is not latched OFF. See Figure 22 for a timing overview (the values of DIAG_IOL.OUTn refer to a channel in normal operation properly connected to the load). Figure 22 Output Status Monitor timing Output Status Monitor diagnostic is available when VS = VS(NOR) and VDD ≥ VDD(UV). INn t OutStatMon_timings.emf OUT.OUTn 1 t tON + tOSM DIAG_OSM.OUTn 0 t x t SPI readout of DIAG_OSM.OUTn 1 0 0 Output voltage comparator tOFF + tOSM x 0 x x |
同様の部品番号 - TLE75602-ESD |
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同様の説明 - TLE75602-ESD |
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