L9407F Ver la hoja de datos (PDF) - STMicroelectronics
Número de pieza
componentes Descripción
Fabricante
L9407F Datasheet PDF : 11 Pages
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L9407F
Table 1. FAULT DETECTION TABLE
Root Cause
Signal
Effect
Test detect
Alternator belt breaking
PH
Alternator disexcitation VPH<VPHH & VA+<Vreg
Brushes open
PH
Alternator disexcitation VPH<VPHH & VA+<Vreg
Driver Open
PH
Alternator disexcitation VPH<VPHH & VA+<Vreg
Field interruption
PH
Alternator disexcitation VPH<VPHH & VA+<Vreg
Field short circuit to the battery
PH
Alternator disexcitation VPH<VPHH & VA+<Vreg
Field short circuit to the ground
DF
Overvoltage
DF<VS1 & VA+>Vreg
Battery discharge (Field Driver open)
A+
Undervoltage
VA+<Vreg
No fully excited
A+
Undervoltage
VA+<Vuv
Battery discharge
A+
Undervoltage
VA+<Vuv
The diagnostic result is disabled during the Soft-start delay time t_ST and the soft-start / soft attack timing t_SL
Figure 6. Output Voltage rise/fall time (DF, DF_MON)
90%
DF
DF_MON
Voltage
10%
t-RISE
t-TM
t-FALL
t-TD
Figure 7. Lamp on delay at Ign. switch turn on
Ign. sw
W/Lamp
On
Off
On
Off
L-t-D
8/11
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