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TLE9185QXV33 Datasheet(PDF) 105 Page - Infineon Technologies AG |
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TLE9185QXV33 Datasheet(HTML) 105 Page - Infineon Technologies AG |
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105 / 192 page  TLE9185QXV33 BLDC Driver Supervision Functions Datasheet 105 Rev.1.0 2021-01-21 The following failures can be detected: • MOSFET short circuit to GND • MOSFET short circuit the battery • Open load (disconnected motor) The status of the output voltages VOUTx, can be read back with status bit HBxVOUT (register GEN_STAT) when the corresponding half-bridge is in off-state (HBxMODE[1:0] = 11). Note: HBxVOUT = 0 if the half-bridge x is not actively off (HBxMODE[1:0] = (0,0), (0,1) or (1,0) and CPEN=1) or when the charge pump is deactivated (CPEN=0). 10.9.1.4 Charge pump undervoltage The voltage of the charge pump output (VCP) is monitored in order to ensure a correct control of the external MOSFETs. The charge pump undervoltage threshold is configurable by the control bits FET_LVL and CPUVTH. If VCP falls below the configured charge pump undervoltage threshold while CPEN = 1: • If one of the MOSFET is on, then all MOSFETs are actively turned off with their configured static discharge current during their respective tHBxCCP active. • Then the gate drivers are turned off and CSA is turned off . • CP_UV is set and latched. The CP_UV is reset and the normal operation is resumed once SUP_STAT is cleared and VCP > VCPUV. The charge pump undervoltage detection is blanked (tCPUVBLANK) during each new activation of the charge pump1). 10.9.1.5 Switching parameters of MOSFETs in PWM mode The effective switching parameters of the active MOSFETs (EN_GEN_CHECK=1), respectively PWM MOSFET (EN_GEN_CHECK=0)can be read out with dedicated status registers: • The turn-on and turn off delays, noted tDON and tDOFF are reported by the status register EFF_TDON_OFF1, EFF_TDON_OFF2, EFF_TDON_OFF3. • The rise and fall times, noted tRISE and tFALL, are reported by the status register TRISE_FALL1, TRISE_FALL2, TRISE_FALL3. 10.9.2 Low-side drain-source voltage monitoring during braking The low-side MOSFETs are turned-on while the charge pump is deactivated in the following conditions: • The slam mode is activated and PWM1/CRC is High. Table 31 Charge pump undervoltage thresholds FET_LVL = 0 FET_LVL = 1 CPUVTH = 0 VCPUV1 (6 V typ. referred to VS) VCPUV3 (7.5 V typ. referred to VS) CPUVTH = 1 VCPUV2 (6.5 V typ. referred to VS) VCPUV4 (8 V typ. referred to VS) 1) Including CPEN set to 1, recovery from VS under/overvoltage, VSINT overvoltage and CP_ OT |
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