L9911B [STMICROELECTRONICS]
CAR ALTERNATOR MULTIFUNCTION SMART VOLTAGE REGULATOR; 汽车交流发电机多功能智能调压
| 型号： | L9911B |
| 厂家： | 
ST |
| 描述： | CAR ALTERNATOR MULTIFUNCTION SMART VOLTAGE REGULATOR |
| 文件： | 总15页 (文件大小：188K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
L9911
CAR ALTERNATOR MULTIFUNCTION SMART VOLTAGE
REGULATOR
PRELIMINARY DATA
1 Features
Figure 1. Package
■ FULLY MONOLITHIC DESIGN
■ HIGH SIDE FIELD DRIVER
■ THERMAL PROTECTION
■ FIELD SHORT CIRCUIT PROTECTION
■ PROTECTED DIAGNOSTIC LAMP DRIVER
■ PROTECTED HIGH SIDE RELAY DRIVER
■ COMPLEX DIAGNOSTICS
Multiwatt8
■ LOAD RESPONSE CONTROL
■ DFM OUTPUT (FIELD MONITOR)
Table 1. Order Codes
Part Number
L9911A
Package
Features
See Table.9
See Table.9
Multiwatt8
Multiwatt8
2 Description
L9911B
The L9911 is a monolithic multifunction alternator
voltage regulator intended for use in automotive
application. It includes the control section, the field
power stage, fault diagnostic circuit which drives a
warning lamp, and the protection against short cir-
cuits.
ance so high to cause a superimposed ripple on
the alternator voltage higher than 5-6V. Conse-
quently it doesn't need, in the standard applica-
tion, any external component. Anyway an external
capacitor (2.2µF) must be inserted between A+
and ground when using the device with very long
cables.
3 Circuit Operation
The alternator's voltage regulator performs the fol-
lowing main functions:
3.2 PROTECTION
– 1) voltage regulation
– 2) protection
It is present a protection against short circuits of
the lamp and the relay power drivers (L) and of the
field power driver (F+), a thermal drivers shutdown
protection and an overvoltage protection of L pow-
er drivers.
– 3) control fault diagnosis
– 4) load response control
3.1 VOLTAGE REGULATION
3.3 DIAGNOSIS
The alternator voltage is compared with a refer-
ence voltage in an amplifier, whose output deter-
mines the switching frequency of output power
MOS whose current excites the coil of the alterna-
tor; as the regulator is in fixed-frequency topology,
the field switching frequency does not depend on
the alternator characteristics. The regulators have
an integrated filter in the voltage sensing path
guaranteeing the correct behaviour of the devices
also when the rectifier diodes feature very high
switching spikes. The internal filtering allows the
usage of the device also with very long cables con-
necting the alternator to the battery with an imped-
The circuit detects fault conditions related to the
phase and F+ status and receives informations
from one of the three alternator phases. In order to
prevent spurious indications, fault warnings are
not displayed immediately but are dalayed by a
fixed time.
3.4 LOAD RESPONSE CONTROL
The internal circuit regulates the soft start charac-
teristics (activated always at engine start) and the
soft attack characteristics.
Rev. 3
1/15
November 2005
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
L9911
Figure 2. Pin Connection (Top view)
8
1
3 4 5 6
7
2
P
L
F+
B
+
GND-case
Table 2. Pin Descriptions
N°
1
Pin
P
Function
Phase sense input.
Field monitor output.
Reserved.
2
DFM
RES.
L
3
4
Lamp terminal low side driver; relay terminal high side driver.
Ground.
5
GND-case
RES.
6
7
Reserved.
F+
B+
High side driver output.
8
Sensed power supply.
Table 3. Absolute Maximum Ratings (Tj = -40 to 150°C, unless otherwise specified)
Symbol
Parameter
Value
24
Unit
V
V
DC Supply Voltage (2 min. @ 25°C)
S
Transient Supply Voltage (load dump) [see application circuit]
t<500ms
40
V
Transient Supply Voltage (low energy spikes) [see application
circuit] ISO7637-1 pulse 1,2,3 /ISO7637-3
60
V
T
Junction temperature range
-40 to 150
-40 to 150
4
°C
°C
W
V
j
T
, T
stg case
Storage and case temperature range
Total power Dissipation (@ Tcase ≤ 150°C, Ifield ≤ 5A)
P
tot
Reverse Battery Voltage (see application diagram) @ 25°C, T =
15 sec
-2.5
Normal working condition reverse voltage (P vs. GROUND)
DC Pin Current on F+, B+, GND (bonding limitation)
ESD Voltage MILSTD883C (All pins vs.GND)
-1.5
15
4
V
A
KV
Table 4. Thermal Data
Symbol
Parameter
Value
Unit
R
Thermal resistance junction to case
≤1.5
°C/W
th j-case
2/15
L9911
Table 5. ELECTRICAL CHARACTERISTCS
(Tj = -40°C to 150°C; unless otherwise specified)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
18
Unit
V
Vbat
Operating Supply Voltage
7
Ib-sinked Supply Battery Current
25
mA
µA
Ib-stby
Vreg 1
Stand-by Current
B+ = 12.5V, F+ = 0V
500
Regulated Voltage & Thermal Ialt=1A-0.9*Inom; Tcase=20ºC;
Drift.
14.0
-4.5
14.4
-3.5
14.8
-2.5
V
1400<rpm<RPMMAX (Fig. 3)
mV/°C
3 configurations available,
selectable by mask option
(see Table.8).
Vreg 2
Vreg 3
Ialt=10A; Tcase=23ºC;
rpm=6000rpm;15V max (Fig. 4)
14.35
-11.8
14.5
-10
14.65
-8.2
V
mV/°C
Ialt=10A; Tcase=23ºC;
rpm=6000rpm (Fig. 5)
14.35
-6
14.5
-4
14.65
-2
V
mV/°C
Delta
Vrpm
1400<rpm<RPMMAX; Ialt=10A
200
250
16
mV
mV
V
Delta
Vload
5A<Ialt<Inom; rpm=6000rpm
Vreg-less Reg. Voltage without Battery Ialt = 3A resistive; Tcase=25º;
2000<rpm<RPMMAX
12
18
Vov-p
Overvoltage protection
threshold
Voltage on pin
B+ to disable L
drivers
High and low
side driver off
22
V
Vov-d
Tj-sd
Overvoltage diagnosis
threshold
VB+ to turn on L low side driver at
VF+ > VS1
Vreg -
5%
Vreg Vreg +
5%
V
ºC
ºC
V
Thermal shutdown threshold Temperature to disable F+, DFM, L
(high & low side drivers)
160
175
190
Tj-sd-2
9.5
Tj-sd-dwn Thermal Shut-down
hysteresis
L/F+/DFM from OFF STATE (due to
thermal shutdown) to ON STATE
Tj-sd-
10
Vuv-1
Under voltage diagnosis
threshold
VB+ to turn on L low side driver
7.7
8.6
Vuv-up
VB+ to turn off L low side driver
Vuv +
0.40
Vuv +
0.50
Vu v +
0.60
V
VF+_sat Field driver saturation voltage Tj = 150ºC; I = 4.5A
Tj = 25ºC; I = 7A
0.6
0.55
2
V
V
V
A
A
A
V
Vf
Freewheeling diode F+
I=5A
If_SCTH Field short circuit driver
protection threshold current
(see fig. 16
F+ = 0V; Tj = -40ºC
F+ = 0V; Tj = -25ºC
F+ = 0V; Tj = -150ºC
11
8.5
5.5
4.5
18
18
18
Vs1
Field driver ON-state
detection
5.5
f-pre
Pre-excitation frequency
283
333
383
Hz
%
Duty-pre Pre-excitation Field driver
ON-duty
15.93
18.75
21.57
t-rise
t_fall
Output Voltage Rise Time
Output Voltage Fall Time
Ifield = 3A resistive (Fig. 7)
Ifield = 3A resistive (Fig. 7)
10
10
50
50
µs
µs
Hz
Fsw_F+ Field switching frequency
Ialt=1A~0.9*Inom;1400rpm<rpm<R
PMMAX
250
400
If_leak
Output Field Driver Leakage B+ = 24V; VF+ = 0
Current
10
µA
3/15
L9911
Table 5. ELECTRICAL CHARACTERISTCS (continued)
(Tj = -40°C to 150°C; unless otherwise specified)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
DUTY-PR Phase regulation max field
ON duty
Fig. 8
26.56
31.25
35.94
%
VH_SAT High Side Driver Saturation
Voltage (Fig. 10)
With driver Isource=500mA
With driver Isink=500mA
1.5
1.5
4
V
V
V
A
A
VL_SAT Low Side Driver Saturation
Voltage (Fig. 10)
VLSB
IHSC
ILSC
VthL
Selfbias without supply Lamp B+ open; L connected to 12V
driver Voltage through a 50 Ohm resistor
High Side Driver short circuit B+ = 12.5V; L = GND
current protection
1.2
1
3
Low Side Driver short circuit B+ = L = 12.5V
current (see fig. 16)
2
Enable Regulator Supply
Voltage Threshold
0.8
0.4
1.15
3.5
Ipd_L
L terminal Pull-down Current VL = 0.6V
when the generator is not
rotating
mA
I_L_sink L sink current when the
generator is rotating
P frequency 500Hz; VB+ = 12V
100
µA
t-D
Diagnostic Alarm Delay Time
0.2
30
0.5
50
s
Vcan-DFM Test mode to cancel soft
start/ attack (voltage)
(Fig. 11)
V
tcan-DFM Test mode delay time
(Fig. 11)
25
ms
V
VPHL1
VPHL2
t_PHL1
VPHH1
Enable control voltage input
high threshold
square wave f = 1KHz
0.35
0.25
115
10
Enable control voltage input
low threshold
square wave f = 1KHz
V
µs
V
Enable Control Voltage
Phase Filtering Time
50
8
Diagnosis phase loss input
high threshold
9
VPHH2_1 Diagnosis phase loss input
low threshold
6.4
50
7.4
8.4
V
tPHd
Diagnostic Phase Filtering
Time
100
µs
I_Pd-P1 Phase Pull-down Current
VP = 0.8V
1
8
mA
Hz
f-dfm
DFM Output open drain
switching freq.
Ialt=1A~0.9*Inom;1400rpm<rpm<R
PMMAX; I_sink=14mA
125
200
VL-DFM Output low voltage saturation I-sink=14mA
1.5
V
I-SC_DFM Short circuit current
protection
VB+ = VDFM = 12.5V
50
400
mA
Ilk-DFM Output leakage current
VDFM=16V at DFM driver OFF
R=1K Ohm (Fig. 7)
5
µA
µs
µs
t-TM
t-TD
Output voltage rise time
Output voltage fall time
0.5
0.5
50
50
R=1K Ohm (Fig. 7)
4/15
L9911
Table 6. Load Response Control Parameters
Symbol
t_ST_1
t_ST_2
Parameter
Test Condition
Min.
Typ.
Max.
Unit
Soft Start Delay Time (Fig.
13) 2 steps available,
selectable by mask option
(see Table.7).
Activated always at engine start
0
2
s
1.73
2.35
t_SL_1
t_SL_2
Soft Attack Time / Soft Start
Time (Fig. 13). 2 steps
available, selectable by mask
option (see Table 7).
From 0 to 100% field duty cycle
2.13
7.65
2.5
9
2.87
s
10.35
EN-RES Reset frequency range to
(constant) enable regulation; Frequency
judged after 4 periods (Fig.
12)
40
50
60
Hz
EN-1
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)
Tj = 25ºC
Tj = -40 to150ºC
108
102
120
120
132
138
Hz
Hz
EN-2
Tj = 25ºC
Tj = -40 to150ºC
131
124
145
145
159
166
Hz
Hz
EN-3
Tj = 25ºC
Tj= -40 to150ºC
144
136
160
160
176
184
Hz
Hz
EN-4
Tj = 25ºC
Tj = -40 to150ºC
174
165
193
193
212
221
Hz
Hz
DISAB-1
DISAB-2
DISAB-3
DISAB-4
Tj = 25ºC
Tj = -40 to150ºC
270
255
300
300
330
345
Hz
Hz
Tj = 25ºC
Tj = -40 to150ºC
315
298
350
350
385
402
Hz
Hz
Tj = 25ºC
Tj = -40 to150ºC
367
347
408
408
449
469
Hz
Hz
Tj = 25ºC
Tj = -40 to150ºC
420
397
466
466
512
535
Hz
Hz
Table 7. Load Response Control Timing Options
t_SL = 2.5s
t_SL = 9s
LRC-D
t_ST = 0s
t_ST = 2s
LRC-A
LRC-C
LRC-B
Table 8. Correspondence of Frequency (typical values) to Application Features
Alternator Revolution Speed (rpm)
6 Pole Pairs
EN-1
8 Pole Pairs
EN-3
Typical Configuration Initiate Regulation
1200
3000
1450
3000
1450
3500
A (Config-A)
LRC Cut
DISAB-1
EN-2
DISAB-3
EN-4
Typical Configuration Initiate Regulation
B (Config-B)
LRC Cut
DISAB-1
EN-2
DISAB-3
EN-4
Typical Configuration Initiate Regulation
C (Config-C)
LRC Cut
DISAB-2
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.
5/15
L9911
Table 9. Customization of L9911: Combination of LRC, Regulation, and Application Options
Vreg-1 / Config-A
Vreg-1 / Config-B
6 Pole Pairs 8 Pole
Vreg-2 / Config-C
Vreg-3 / Config-C
6 Pole Pairs 6 Pole
LRCTiming
options
6 Pole
Pairs
8 Pole
Pairs
6 Pole
Pairs
6 Pole
Pairs
Pairs
nya
nya
nya
nya
Pairs
nya
nya
nya
nya
LRC-A
LRC-B
LRC-C
LRC-D
L9911B
nya
nya
nya
nya
nya
nya
L9911A
nya
nya
nya
nya
nya
nya
nya
nya
nya
nya
nya
nya
nya
Nya
nya
nya
Figure 3. Vreg-1
15.2
15.1
15
14.9
14.8
14.7
14.6
14.5
14.4
14.3
14.2
14.1
14
Max.
Typ.
13.9
13.8
13.7
13.6
13.5
13.4
Min.
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
14.06V~14,91V @ -5°C
14.00V~14.80V @ 20°C
13.42V~14,48V @ 150°C
T
Figure 4. Vreg-2
15.1
15
14.9
14.8
14.7
14.6
14.5
14.4
14.3
14.2
14.1
14
Max.
Typ.
13.9
13.8
13.7
13.6
13.5
13.4
13.3
13.2
13.1
13
Min.
12.9
12.8
T
14.60V~15.00V @ -5°C
14.35V~14.65V @ 23°C
12.85V~13.66V @ 150°C
6/15
L9911
Figure 5. Vreg-3
15.1
15
14.9
14.8
14.7
14.6
14.5
14.4
14.3
14.2
14.1
14
Max.
Typ.
13.9
13.8
13.7
13.6
13.5
Min.
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
T
14.41V~14.82V @ -5°C
14.35V~14.65V @ 23°C
13.59V~14.40V @ 150°C
Figure 6. Output Voltage rise/fall time (F+, DFM)
90%
F+
DFM
Voltage
10%
t-rise
t-TM
t-fall
t-TD
7/15
L9911
Figure 7. Phase Regulation Characteristics
on
Engine
Ign. Switch
W/Lamp
off
on
off
off
Load ON
on
t_ST
t_SL
Ifield
F+/DFM
Field Pre-
excitation
Field
Regulation
PRINCIPLE OF PHASE REGULATION:
When VB+ is above the regulated voltage, the field driver is controlled to keep phase peak voltage from
falling below VPHH1.
If phase peak voltage drops below VPHL1, phase regulation does not work.
Figure 8. Application Diagram
ignition
switch
warning lamp
L
B+
_
+
C
L9911
+Vb / Vcc
F+
Field
Stator
DFM
P
GND
to E.C.U.
8/15
L9911
Figure 9. High Side/Low side driver saturation
B+
Regulator Assy
L9911
Control
Circuit
L
Figure 10. Test mode to cancel soft start/attack
DFM
CANCEL
FILTER (tcan)
AND LATCH
COMP
Vcan
Figure 11. Soft-start enable frequency range
EN-1~4
{
SOFT-START
ENABLE
FREQUENCY
CONSTANT
(50HZ)
EN-RES
9/15
L9911
Figure 12. Soft start characteristics (always activated at engine start)
Ign. sw
on
off
0.5s min
0.5s min
Time (sec)
Engine speed (rpm)
(soft attack inhibition Alt. speed)
(soft start enable Alt. speed)
Time (sec)
Soft start
timing
Soft start
timing
Soft start
timing
Field current (A)
Soft start
delay time
Soft start
delay time
Soft start
delay time
0.15s~0.5s
Time (sec)
W/Lamp
0.15s~0.5s
on
off
Time (sec)
E/G stop
Starter on
E/G stop
and Ign. sw off
Starter on
Ign. sw on
Starter on
Ign. sw on
Engine start
Engine start
Engine restart
Soft attack inhibition
Alt. speed > E/G speed
Soft attack inhibition
Alt. speed < E/G speed
10/15
L9911
Figure 13. Soft Start/attack Characteristics
on
Engine
Ign. Switch
W/Lamp
off
on
off
off
Load ON
on
t_ST
t_SL
Ifield
F+/DFM
Field Pre-
excitation
Field
Regulation
Table 10. Fault Detection
Root Cause
Alternator belt breaking
Brushes open
Signal
Effect
Test detect
P
P
Alternator disexcitation
Alternator disexcitation
Alternator disexcitation
Alternator disexcitation
Overvoltage
VP<VPHH1 & VB+<Vreg
VP<VPHH1 & VB+<Vreg
VP<VPHH1 & VB+<Vreg
VP<VPHH1 & VB+<Vreg
VF+>VS1 & VB+ > Vov-d
VP<VPHH1 & VB+<Vreg
VB+<Vuv
Field Driver Open
P
Field interruption
P
Field short circuit to the battery
Field short circuit to the ground
Battery discharge
F+
P
Alternator disexcitation
Undervoltage
B+
The diagnostic result is disabled during the Soft-start delay time t_ST 0...3 and the soft-start / soft attack timing t_SL 0...3
Figure 14. DFMonitor Electrical configuration
L9911
Regulator assy
Valim
B+
F+
Control
Circuit
R
Alternator
Field
DFM
to the ECU
Field driver
DFMon driver
Test circuit
11/15
L9911
Figure 15. Short circuit drivers' protection
Current short circuit (Field driver, Relay driver, DFMon driver)
T< 25ms
Current short circuit (Lamp driver)
Retry time
Filtering time
Field driver, DFmon driver and Relay driver are protected in switching mode (not linear), with a retry time
less than 25ms.
Lamp driver is protected in linear mode, with a retry time of 1s.
12/15
L9911
4 Package Information
In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These
packages have a Lead-free second level interconnect. The category of second Level Interconnect is
marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The
maximum ratings related to soldering conditions are also marked on the inner box label.
ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com.
Figure 16. Multiwatt8 Mechanical Data & Package Dimensions
mm
inch
DIM.
OUTLINE AND
MECHANICAL DATA
MIN. TYP. MAX. MIN.
TYP. MAX.
0.197
A
B
5
2.65
1.6
0.104
C
0.063
E
0.49
0.78
2.40
0.55 0.019
0.85 0.030
0.022
F
0.033
G
2.54
2.68 0.094 0.10 0.105
G1
H1
H2
L
17.64 17.78 17.92 0.69
0.70
0.71
19.6
0.772
20.2
20.65 0.80
0.795
0.81
0.68
20.35
L2
L3
L4
L7
S
17.05 17.20 17.35 0.67
0.68
17.25 17.5 17.75 0.679 0.689 0.699
10.3
2.65
1.9
10.7
10.9 0.406 0.421 0.429
2.9
2.6
2.6
0.104
0.075
0.075
0.114
0.102
0.102
0.022
0.034
0.152
S1
U
1.9
0.40
0.70
3.65
0.55 0.015
0.85 0.028
3.85 0.144
Multiwatt8 (Pin 5 GND)
Z
Dia1
0043696 F
13/15
L9911
Table 11. Revision History
Date
Revision
Description of Changes
June 2004
May 2005
1
2
First Issue.
Modified Figure 2, Table 2 and Table 5;
Updated Figure 10, 11 and 14; Add Table 7.
Add ordering numbers.
07-Nov-2005
3
Updated Table 5.
Added new tables 6-9.
14/15
L9911
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted
by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject
to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not
authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics.
All other names are the property of their respective owners
© 2005 STMicroelectronics - All rights reserved
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15/15
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