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TLE9185QXV33 Datasheet(PDF) 100 Page - Infineon Technologies AG |
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TLE9185QXV33 Datasheet(HTML) 100 Page - Infineon Technologies AG |
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100 / 192 page  TLE9185QXV33 BLDC Driver Supervision Functions Datasheet 100 Rev.1.0 2021-01-21 Note: It is recommended to clear the VCC1_WARN and VCC1_UV bit once it is detected by the microcontroller software to verify if the undervoltage still exists or not. 10.6.2 VCC1 Overvoltage For fail-safe reasons a configurable VCC1 over voltage detection feature is implemented. It is active when the VCC1 voltage regulator is enabled. In case the VCC1,OV,r threshold is crossed, the device triggers following measures depending on the configuration: •The bit VCC1_OV is always set. • Based on the configuration of VCC1_OV_MOD, different kind of event are generated from device. •If the VCC1_OV_MOD=11B, in case of the device enters in Fail Safe Mode. Figure 52 VCC1 Over Voltage Timing Diagram 10.7 VCC1 Short Circuit Diagnostics The short circuit protection feature for VCC1 is implemented as follows: • The short circuit detection is only enabled if VS > VSINT,UV. • If VCC1 is not above the VRTx within tVCC1,SC after device power up or after waking from Sleep Mode or Fail- Safe Mode (i.e. after VCC1 is enabled) then the SPI bit VCC1_SC bit is set, VCC1 is turned off, the FO pin is enabled, FAILURE is set and Fail-Safe Mode is entered. The device can be activated again via a wake-up sources. • The same behavior applies, if VCC1 falls below VRTx for longer than tVCC1,SC. RSTN t VCC1 tRDx (config) Normal Mode t tOV_filt Restart Mode Normal Mode VCC1,OV |
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