mc10xs3535 Freescale Semiconductor, Inc, mc10xs3535 Datasheet - Page 31

• Manufacturer Part Number: mc10xs3535
• Description: Smart Front Corner Light Switch Triple 10 M And Dual 35 M
• Manufacturer: Freescale Semiconductor, Inc

OUTPUT PROTECTION FEATURES
These protections are provided for each output (OUT1:5).
Over-temperature detection
each output (OUT1:OUT5 ). It can occur when the output pin
is in the ON or OFF state. An over-temperature fault condition
results in turning OFF the corresponding output. The fault is
latched and reported via SPI. To delatch the fault and be able
to turn ON again the outputs, the failure condition must be
removed (T< 175 °C typically) and:
after a read operation.
Over-current detections
(see
transistors and the harness in the event of overload (fuse
characteristic).
Analog Integrated Circuit Device Data
Freescale Semiconductor
Figure 12. Double Over-current Window in Normal Mode
Output current
OCHI1
OCHI2
The 10XS3535 provides the following protection features:
•Protection against transients on V
•Active clamp, including protection against negative
•Over-temperature
•Severe and resistive Over-current
•Open Load during ON state
The 10XS3535 provides over-temperature shutdown for
•if the device was in Normal mode, the output
•if the device was in Fail mode, the corresponding output
The corresponding SPI fault report (OTS bit) is removed
The 10XS3535 provides intelligent over-current shutdown
OCLO
Figure
ISO 7637)
transients on output line
corresponding register (bit D7) must be rewritten.
Application of complete OCHI window (OCHI1+OCHI2
during t2) depends on toggling or not toggling the D7 bit.
is locked until restart of the device: wake up from Sleep
mode or V
t1
12) in order to protect the internal power
BATPOR1
t2
.
BAT
PROTECTION AND DIAGNOSIS FEATURES
supply line (per
time
toggling D7 bit in Normal Mode. During the switch-on, a
severe short-circuit condition provided on the module
connector is reported as an OCHI fault. In Fail Mode, the
control of OCHI window is provided by the toggles: IGN_ON,
Flasher_ON, and FOG_ON. The current thresholds (I
I
for each driver. After t
protect in steady state. t
state duration (t
controlled in PWM mode during the inrush period, the t
corresponds to the sum of each “on” state duration in order to
expand dynamically the transient overcurrent profile.
H7 bulbs at this output requires SPI programming (Xenon
bit).
the corresponding output is disabled immediately. The fault is
latched and the status is reported via SPI. To delatch the
fault, the failure condition must be removed and:
operation:
Overvoltage detection and active clamp
order to limit the maximum drain to source voltage.
(OUT[1 to 5]) is turned off which leads to high voltage at
OCHI2
OCHI (I
OUT2 is default loaded with the Xenon profile. The use of
In case of overload (OCHI1 or OCHI2 or OCLO detection),
For OCHI1:
•if the device was in Normal Mode: the output
•if the device was in Fail Mode, the failure is locked until
For OCHI2 and OCLO:
•if the device was in Normal Mode: the output
•if the device was in Fail Mode, Autorestart is activated.
The SPI fault reports are removed together after a read
The 10XS3535 provides an active gate clamp circuit in
In case of overload on an output the corresponding switch
corresponding register (bit D7) must be rewritten D7=1.
Application of complete OCHI window depends on
toggling or not toggling D7 bit.
restart of the device: wake up from Sleep Mode or
V
corresponding register (bit D7) must be rewritten D7=1.
Application of complete OCHI window depends on
toggling or not toggling D7 bit.
The device Autorestart feature provides a fixed duty
cycle and fixed period with OCHI1 window.
Autorestart feature resets OCHI2 or OCLO fault after
corresponding Autorestart period.
and I
BATPOR1
- OC bit=(OCHI1) or (OCHI2) fault
- OVL bit=(OCHI1) or (OCHI2) or (OCLO) fault
OCHI1
OCLO
.
ON
and then I
) and the time (t
) of the output. In case of the output is
PROTECTION AND DIAGNOSIS FEATURES
2,
OCLO current threshold is set to
1
and t
FUNCTIONAL DEVICE OPERATION
OCHI2
2
) is only activated after
times are compared to “on”
1
and t
2
) are fixed numbers
10XS3535
OCHI1
ON
31
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