FUNCTIONAL DEVICE OPERATION
PROTECTION AND DIAGNOSIS FEATURES
VBAT with an inductive VBAT line. The maximum VBAT
voltage is limited at V BATCLAMP by active clamp circuitry
through the load. In case of open load condition, the positive
transient pulses (ISO 7637 pulse 2 and inductive battery line)
shall be handled by the application.
Figures 13 and 14 describe the faults management in
Normal mode and Fail mode.
Note: t1 and t2 please refer to Figure 12 .
(OCHI2 = 1) or (OT = 1) or (UV = 1) or (D7 = 0)
(OCHI1 = 1) or (OT = 1) or (UV = 1) or (D7 = 0)
D7 = 0 then 1 without fault
t 1 <t ON <t 2 and (NO_OCHI=0)
without fault
OFF
and (NO_OCHI = 0)
t ON = t 1 without fault
OCHI2
t ON = t 2 without fault
(rewrite D7 = 1) and
(t ON <t 1 ) without fault and
(NO_OCHI = 0)
OCHI1
(NO_OCHI = 1) without fault
(NO_OCHI = 1) without fault
OCLO
t ON <t 1 and (NO_OCHI = 0) without fault
t ON >t 1 without fault and (rewrite D7 = 1) and (NO_OCHI = 0)
(t ON >t 2 ) and (rewrite D7 = 1) without fault
D7=0 then 1 without fault and (NO_OCHI=1)
(OCLO=1) or (OT=1) or (UV=1) or (D7=0)
Figure 13. Faults Management in Normal Mode (for OUT[1:5] only)
MC10XS3535
Analog Integrated Circuit Device Data ?
Freescale Semiconductor
35
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