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L9965P Scheda tecnica(PDF) 29 Page - STMicroelectronics

Il numero della parte L9965P
Spiegazioni elettronici  Automotive single channel pyro-fuse driver
PDF  104 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9965P Scheda tecnica(HTML) 29 Page - STMicroelectronics

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Figure 11. FENx line integrity check in PWM mode (example of timeout detection)
Internal Timeout
of L9965P
FENx
Timer reset before high
threshold and after low
threshold  Pulse Valid
TIMEOUT
Timer expired
FENx_TIMEOUTlatched
Timer high threshold
Timer low threshold
Timer clamp
FAULT
CLEARED
FENx_TIMEOUT
cleared
tFAULTN_PULSE
CWUP
FLTIN_L9965C
FAULTN_L9965P
FAULT
LATCHED by
L9965P (FENx
timeout expired)
tCWUP_WAKEUP_TIME
FENx activity stop
FENx activity restart
FENx_MODE= 1
Figure 12. FENx line integrity check in PWM mode (example of frequency out of range)
FENx
Internal Timeout
of L9975P
Timer high threshold
Timer low threshold
Timer clamp
Timer reset before the low
threshold 
FENx_HIGH_FREQlatched
Timer reset after the high threshold
but before the clamp
FENx_LOW_FREQ latched
CWUP
FLTIN_L9965C
FAULTN_L9965P
FAULT
LATCHED by
L9965P (FENx
high frequency)
tCWUP_WAKEUP_TIME
tFAULTN_PULSE
FAULT
CLEARED
FAULT
CLEARED
FENx_MODE= 1
Figure 13. FENx decoder times in PWM mode
0
high th
low th
time out
Time (us)
typ
L9965P
Functional description
DS14702 - Rev 4
page 29/104



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