L9911(2005) Просмотр технического описания (PDF) - STMicroelectronics
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L9911 Datasheet PDF : 15 Pages
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L9911
Table 6. Load Response Control Parameters
Symbol
t_ST_1
t_ST_2
t_SL_1
t_SL_2
EN-RES
(constant)
EN-1
EN-2
EN-3
EN-4
DISAB-1
DISAB-2
DISAB-3
DISAB-4
Parameter
Soft Start Delay Time (Fig.
13) 2 steps available,
selectable by mask option
(see Table.7).
Soft Attack Time / Soft Start
Time (Fig. 13). 2 steps
available, selectable by mask
option (see Table 7).
Reset frequency range to
enable regulation; Frequency
judged after 4 periods (Fig.
12)
Soft start enable (EN) and
LRC disable (DISAB)
frequency ranges.
4 configurations available,
selectable by mask option
(possible combinations in
Table 8). Always activated at
engine start. Frequencies
judged after 4 periods (Fig.
12)
Test Condition
Activated always at engine start
From 0 to 100% field duty cycle
Tj = 25ºC
Tj = -40 to150ºC
Tj = 25ºC
Tj = -40 to150ºC
Tj = 25ºC
Tj= -40 to150ºC
Tj = 25ºC
Tj = -40 to150ºC
Tj = 25ºC
Tj = -40 to150ºC
Tj = 25ºC
Tj = -40 to150ºC
Tj = 25ºC
Tj = -40 to150ºC
Tj = 25ºC
Tj = -40 to150ºC
Min. Typ. Max. Unit
0
s
1.73
2
2.35
2.13 2.5 2.87
s
7.65
9 10.35
40
50
60
Hz
108 120 132 Hz
102 120 138 Hz
131 145 159 Hz
124 145 166 Hz
144 160 176 Hz
136 160 184 Hz
174 193 212 Hz
165 193 221 Hz
270 300 330 Hz
255 300 345 Hz
315 350 385 Hz
298 350 402 Hz
367 408 449 Hz
347 408 469 Hz
420 466 512 Hz
397 466 535 Hz
Table 7. Load Response Control Timing Options
t_ST = 0s
t_ST = 2s
t_SL = 2.5s
LRC-A
LRC-C
t_SL = 9s
LRC-D
LRC-B
Table 8. Correspondence of Frequency (typical values) to Application Features
Alternator Revolution Speed (rpm)
6 Pole Pairs
8 Pole Pairs
Typical Configuration Initiate Regulation
A (Config-A)
LRC Cut
1200
3000
EN-1
DISAB-1
EN-3
DISAB-3
Typical Configuration Initiate Regulation
B (Config-B)
LRC Cut
1450
3000
EN-2
DISAB-1
EN-4
DISAB-3
Typical Configuration Initiate Regulation
C (Config-C)
LRC Cut
1450
3500
EN-2
DISAB-2
EN-4
EN-4
Considering the overall WW application scenario, there is a direct correspondence between Typical Con-
figurations A/B and regulation curve Vreg-1, and between Typical Configuration C and regulation curves
Vreg-2 and Vreg-3. This is allowing the summary of all possible customizations for L9911 in the table be-
low.
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