TLE7184F_15 Datasheet, PDF (24/38 Pages) Infineon Technologies AG – System IC for B6 motor drives

TLE7184F
Description of Modes, Protection and Diagnostic Functions
9
Description of Modes, Protection and Diagnostic Functions
9.1
Description of modes
The operation of TLE7184F can be described by different operation modes
Sleep Mode
- low quiescent current
- all supplies switched off
/INH = High
“OR”
IFMA= Low
Wake-up Mode
- ramp-up of
int5V, VREG and VDD
Error conditions TLE7184F and used abbreviations:
VREG Under Voltage Diagnosis ( VREG_UVD)
VDD Under Voltage Diagnosis ( VDD_UVD)
Over Current Shut Down( OCSD)
VDH Over Voltage Shut Down ( VDH_OVSD )
IOV Over Voltage Shut Down ( IOV_OVSD))
Short Circuit Detection ( SCD)
SCDL Pin Open Detection ( SCDLPOD)
Over Temperature Pre-Warning ( OTPW)
Over Temperature Shut Down( OTSD)
VDD Under Voltage Shut Down( VDD_UVSD)
VREG Under Voltage Shut Down( VREG_UVSD)
VS Under Voltage Lockout ( VS_UVLO)
VS Under Voltage Lockout ( VS_UVLO) leads from every mode into the Sleep Mode
Over Temperature Shut Down( OTSD) leads from every mode except Dead Lock Mode into the Sleep
Mode
Wake-up time
expired
VREG_UVSD (no OTPW)
VDD_UVSD “OR” (VREG_UVSD “AND” OTPW)
Reset by /RGS “AND“ OTPW
OTPW “OR” VDD_UVSD
Error Mode
- latched error is reported
- MOSFets switched-off
- VREG and VDD on
Normal Mode
with
OT -Prewarning
- latched error is reported
- driver stages are active
Error
condition
occures^*1)
Error condition
occures^*1)
Reset of
error _{Reset of OTPW error}
Deadlock Mode
*2)
- VREG and VDD off
- latched error is reported
- MOSFets switched-off
- only 5Vint supply is on
VREG Shut-down
Mode
- latched error is reported
- MOSFets switched-off
- VREG off
Normal Mode
without
Error Conditions
- no error is reported
- driver stages are active
OTPW
VDD_UVSD
“OR”
VREG_UVSD
/RGS = Low
for t > tsleep
VDD_UVSD “OR” (VREG_UVSD “AND” OTPW)
VREG_UVSD (no OTPW)
/RGS = Low for t> tsleep
Go-to-Sleep Mode
- VDD andVREG are
switched off
- latched error is reported
VDD <= V_DDsleep
*1) Error conditions:
VREG_UVD, VDD_UVD, OCSD, VDH_OVSD,
IOV_OVSD, SCD, SCDLPOD
*2) only way to leave this mode is VS_UVLO
Figure 10 State diagram TLE7184F
Data Sheet
24
Rev. 1.1, 2011-04-08