參數(shù)資料
型號(hào): L9407F
廠(chǎng)商: STMICROELECTRONICS
元件分類(lèi): 模擬信號(hào)調(diào)理
英文描述: SPECIALTY ANALOG CIRCUIT, PSFM8
封裝: MULTIWATT-8
文件頁(yè)數(shù): 2/14頁(yè)
文件大小: 211K
代理商: L9407F
Electrical specification
L9407F
10/14
Figure 6.
Soft start/attack characteristics
The diagnostic result is disabled during the Soft-start delay time t_ST and the soft-start / soft attack timing t_SL
Figure 7.
Output voltage rise/fall time (DF, DF_MON)
Table 6.
Fault detection
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
Engine
Ign. Key
W/Lamp
Ifield
DF - DFM
off
on
off
on
off
on
Bl
t_SL
t_ST
Field Pre-excitation
Field Regulation
Bl
Load ON
90%
10%
t-RISE
t-TM
t-FALL
t-TD
DF
DF_MON
Voltage
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