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TLE9185QXV33 Datasheet(PDF) 29 Page - Infineon Technologies AG |
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TLE9185QXV33 Datasheet(HTML) 29 Page - Infineon Technologies AG |
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29 / 192 page  TLE9185QXV33 BLDC Driver System Features Datasheet 29 Rev.1.0 2021-01-21 5.6.3 Transition into Fail-Safe Mode The Fail-Safe Mode can be entered in case of critical event as shown in the following figure. Figure 13 Move into Fail-Safe Mode Prerequisites: • Critical events on VCC1 • Watchdog trigger failures Trigger Events: • Device thermal shutdown (TSD2) (see also Chapter 10.8.3). • VCC1 is shorted to GND (see also Chapter 10.7). • VCC1 over voltage (based on VCC1_OV_MOD). • 4 consecutive Watchdog trigger failure. • 4 consecutive VCC1 under voltage events. 5.7 Wake Features Following wake sources are implemented in the device: • Static Sense: WKx inputs are permanently active as wake sources. • Cyclic Wake: wake controlled by internal timers, wake inputs are not used for cyclic wake. 5.7.1 Cyclic Wake For the cyclic wake feature one timer is configured as internal wake-up source and will periodically trigger an interrupt on INTN in Normal Mode and Stop Mode. During Sleep Mode, the timer triggers and wakes up the device again. The device enters via Restart Mode the Normal Mode. The correct sequence to configure the cyclic wake is shown in Figure 14. The sequence is as follows: VCC1 Short to GND TSD2 event Fail-Safe Mode VCC1 OFF CP OFF WD OFF BD OFF Cyc. Wake OFF CSA OFF After 4x consecutive Watchdog failure VCC1 over voltage (depend from VCC1_OV_MOD setting) After 4x consecutive VCC1 under voltage events (if VS_INT > VS_INT_UV) |
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