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TLE9185QXV33 Datasheet(PDF) 97 Page - Infineon Technologies AG |
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TLE9185QXV33 Datasheet(HTML) 97 Page - Infineon Technologies AG |
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97 / 192 page  TLE9185QXV33 BLDC Driver Supervision Functions Datasheet 97 Rev.1.0 2021-01-21 10.4 VSINT Under- and Overvoltage 10.4.1 VSINT Undervoltage The VSINT under-voltage monitoring is always active in Init Mode, Restart Mode, Normal Mode. If the supply voltage VSINT drops below VSINT,UV for more than tVSUV_FILT, then the device does the following measures: • The VCC1 short circuit diagnosis becomes inactive (see Chapter 10.7). However, the thermal protection of the device remains active. If the undervoltage threshold is exceeded (VSINT rising) then the function will be automatically enabled again. • The status bit VSINT_UV is set and latched until a clear command of SUP_STAT is received. Note: VSINT under-voltage monitoring is not available in Stop Mode due to current consumption saving requirements except if the VCC1 load current is above the active peak threshold (I_PEAK_TH) or if VCC1 is below the VCC1 prewarning threshold. 10.4.2 VSINT Overvoltage The VSINT over-voltage monitoring is always active in Init Mode, Restart Mode and Normal Mode. If VSINT rises above VS,OVD1, VS,OVD2 for more than tVSOV_FILT then the device does the following measures: 1. If HBxMODE = 01b or 10b , then the corresponding MOSFETs are actively turned off with their static discharge current during their respective tHBxCCP Active. 2. Then the charge pump is turned off and the passive discharge is activated. 3. The status bits VSINT_OV is set and latched until a clear command of SUP_STAT is received. If VS or VSINT fall below VS,OVD1 or VS,OVD2: •If CPEN = 0 : the charge pumps stays and the bridge driver stay off. •If CPEN = 1 : –If BDOV_REC = 0 : Then the charge pump is reactivated but the bridge driver stays off until VS_OV and VSINT_OV are cleared. The current sense amplifier is reactivated (provided that CSA_OFF = 0) –If BDOV_REC = 1 : Then the charge pump and the current sense amplifier are reactivated and the bridge driver is enabled if VCP > VCPUVx, even if VS_OV or VSINT_OV is set. The state of the external MOSFETs is according to the control registers. |
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