Freescale Semiconductor, Inc.
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Document order number: MC33099
Rev 4.0, 07/2004
33099
Adaptive Alternator Voltage
Regulator
The 33099 is designed to regulate the output voltage in diode-rectified
alternator charging systems common to automotive applications. The 33099
provides either an analog or digital fixed frequency duty cycle (ON/OFF ratio)
control of an alternator’s field current. Load Response Control (LRC) of the
alternator field current is accomplished by selecting the duty cycle for
prevailing engine conditions to eliminate engine speed hunting and vibrations
caused by abrupt torque loading of the engine owing to sudden electrical loads
being applied to the system at low engine RPM. Four LRC rates are
selectable.
The 33099 uses a feedback voltage to establish an alternator field current
that is in harmony with system load currents. The output voltage is monitored
by an internal voltage divider scheme and compared to an internal voltage
ramp referenced to a bandgap voltage. This approach provides precision
output voltage control over a wide range of temperature, electrical loads, and
engine RPM.
Features
• External High-Side MOSFET Control of a Ground-Referenced Field
Winding
• LRC Active During Initial Start
• V
set
at ±0.1 V @ 25°C
• <0.1 V Variation Over Engine Speeds of 2,000 to 10,000 RPM
• <0.2 V Variation Over 10% to 95% of Maximum Field Current
• Controlled MOSFET and Field Flyback Diode Recovery Characteristics
for Minimum RFI
• Trimmed Devices Available at 14.6 V and 14.8 V (typical) V
set
ALTERNATOR VOLTAGE
REGULATOR
Freescale Semiconductor, Inc...
DW SUFFIX
CASE 751G-04
16-TERMINAL SOICW
ORDERING INFORMATION
Device
MC33099DW/R2
MC33099CDW/R2
Temperature
Range (T
A
)
-40°C to 125°C
Package
16 SOICW
33099
Simplified Application Diagram
Simplified Application Diagram
33099
PHASE
GATE
SOURCE
PHASE FILTER
FIELD
WINDING
IGN
LAMP DRAIN
BAT
REMOTE
LRC1
LRC2
AGND
GND
IGNITION
SWITCH
CHASSIS
© Motorola, Inc. 2004
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Freescale Semiconductor, Inc.
REMOTE
V
rem
Remote
V
rs
CB1
VDD
Regulator
0.6 V
Local
Vl
LB
Vls
R1
R2
S1
R4
R5
CB2
C
rs
V
o
RF
Low
Pass
Cf
FB
V
fb
Bandgap
Reference
Regulator
(OTC)
1.25 V
C
uv
1.25 V
LD
S2
V
hvl
C
ph
F1
1.25 V
F2
DAC
V
dac
C
dc
A
N
D
1
Over
Voltage
Detector
OR1
OV
Ign
Delay
Circuit
UV
Vref
(2.0 V)
VDD
(5.0 V)
Min Duty
Cycle
Generator
Battery
BAT
Charge
Pump
Regulator
Internal
V reg
and Bias
Current
Regulator
Vg
lpu
A
N
D
4
S3
Local
Sense
GATE
Ga
PHASE
Phase
PHASE
Phase
Filter
FILTER
R3
Gate
Polling
Circuit
Css
Battery
VTssc
lpd
Z1
SOURCE
So
IGN
IGN
Freescale Semiconductor, Inc...
C
ign
Drain
Polling
Circuit
A
N
D
2
Lamp
Driver
Circuit
1.25V
VTigm
Iign
C
ds
Battery
VTdsc
101 kHz
Osc
To
Logic
4 LSB
P
16
4 MSB
Digital
Duty Cycle
Generator
1
2
Z2
Lam
LAMP
Drain
DRAIN
Lam
LAMP
Gate
GATE
8-Bit Counter
10
11
P
256
Up/Down
Control
Switch
u/d
MUX
U/D
Counter
A
N
D
3
OR2
A/D Duty Cycle
Comparator
& Tracking
Circuit
u/d
Lamp
Polling
Circuit
Thermal
Limit
Detector
Current
Limit
Detector
Dtl
Np
LCR Test
LCR1
LRC2
AGnd
Rs
Gnd
LRC TEST
LRC1
LRC2
AGND
GND
Figure 1. 33099 Simplified Internal Block Diagram
33099
2
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MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
Freescale Semiconductor, Inc.
GATE
BAT
GND
LAMP DRAIN
LAMP GATE
IGNITION
LRC2
LRC1
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
SOURCE
PHASE
NC
PHASE FILTER
LRC TEST
NC
REMOTE
AGND
TERMINAL FUNCTION DESCRIPTION
Terminal
Terminal
Name
GATE
BAT
GND
LAMP
DRAIN
LAMP
GATE
IGN
LRC2
LRC1
AGND
REMOTE
NC
LRC TEST
PHASE
FILTER
PHASE
SOURCE
Formal Name
Gate Drive
Battery
Ground
Lamp Drain
Lamp Gate
Ignition
Load Response Control 2
Load Response Control 1
Analog Ground
Remote
No Connect
Load Response Control Test
Phase Filter
Phase Sense Input
Source
Definition
Controls the GATE of the MOSFET to control the alternator field current.
Primary power connection to the system battery.
Source lamp current and digital ground.
Controls the Fault Lamp current.
Controls the Fault Lamp internal driver as an override function.
Controls the ON or OFF function of the regulator.
Inputs for selecting the LRC rate.
Ground connection for analog circuitry.
Provides for external Kelvin connection to system battery.
No internal connection to this terminal.
Provides acceleration of LRC rate for testing.
Provides access to Phase Resistive Divider for External Phase Filter capacitance.
Input for phase voltage.
Coupled to source of MOSFET to provide a GATE voltage reference and to monitor for
source shorts to ground.
Freescale Semiconductor, Inc...
1
2
3
4
5
6
7
8
9
10
11, 14
12
13
15
16
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
For More Information On This Product,
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33099
3
Freescale Semiconductor, Inc.
.
MAXIMUM RATINGS
All voltages are with respect to ground unless otherwise noted.
Rating
Symbol
Value
Unit
ELECTRICAL RATINGS
Power Supply Voltage
Load Dump Transient Voltage
(Note 1)
Negative Voltage
(Note 2)
ESD Voltage
Human Body Model
(Note 3)
Machine Model
(Note 4) (Note 5)
V
ESD1
V
ESD2
±2000
±200
V
bat
+V
max
-V
min
24
40
-2.5
V
V
THERMAL RATINGS
Freescale Semiconductor, Inc...
Operating Junction Temperature
Operating Ambient Temperature Range
Storage Temperature Range
Power Dissipation and Thermal Characteristics
Maximum Power Dissipation @ T
A
= 125°C
Thermal Resistance, Junction-to-Ambient
Terminal Soldering Temperature
(Note 6)
T
J
T
A
T
STG
P
D
R
θJA
T
SOLDER
150
-40 to 125
-45 to 150
°C
°C
°C
640
85
220
mW
°C/W
°C
Notes
1. 125ns wide square wave pulse.
2. Maximum time = 2 minutes.
3. ESD1 testing is performed in accordance with the Human Body Model (C
ZAP
=100 pF, R
ZAP
=1500
Ω).
4.
5.
6.
ESD2 testing is performed in accordance with the Machine Model (C
ZAP
=200 pF, R
ZAP
=0
Ω).
ESD2 voltage capability of PHASE FILTER terminal is greater than 150 V. All other device terminals are as indicated.
Terminal soldering temperature is for 10 seconds maximum duration. Not designed for immersion soldering. Exceeding these limits may
cause malfunction or permanent damage to the device.
33099
4
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MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
Freescale Semiconductor, Inc.
STATIC ELECTRICAL CHARACTERISTICS
T
A
= 25°C unless otherwise noted.
Characteristic
Regulation Voltage @ 50% Duty Cycle
V
rem
= V
set
or V
rem
< V
Trem
V
rem
= V
set
or V
rem
< V
Trem
Regulation Voltage Range
10% < DC < 95%
Regulation Voltage Temperature Coefficient (TC)
V
rem
= V
bat
or V
rem
< V
Trem
Power Up/Down IGN Threshold Voltage
V
Tign
I
Q1(
on
)
I
Q2(
on
)
TC(V
set
)
-13
0.9
-11
1.25
-9
1.6
V
mA
–
–
6.5
6.5
8.0
8.4
mA
I
Q1(
off
)
I
Q2(
off
)
V
T
rem
V
T
ph
V
T
uv
MC33099
MC33099C
V
Tov
MC33099
MC33099C
TC(V
Tov
)
V
Tld
MC33099
MC33099C
TC(V
Tld
)
V
set2
MC33099
MC33099C
TC(V
set
2
)
V
Tld2
MC33099
MC33099C
TC(V
Tld2
)
–
–
4.2
3.75
10.9
10.35
0.6
1.0
4.5
4.0
11.35
10.95
1.5
3.4
4.8
4.25
11.6
11.55
V
16.15
15.8
–
18.9
18.45
–
18.0
17.65
–
23.5
23.5
–
16.65
16.4
-12.4
19.25
19.15
-14.3
18.5
18.15
-13.4
24
23.85
-17.9
17.15
17.0
–
19.8
19.85
–
18.8
18.75
–
25
24.65
–
mV/°C
mV/°C
V
mV/°C
V
mV/°C
V
V
V
V
MC33099
MC33099C
dVset
–
210
300
mV/°C
Symbol
V
set
Min
14.55
14.3
Typ
14.8
14.6
Max
15.05
14.85
mV
Unit
V
Freescale Semiconductor, Inc...
Operating Drain Current (Ignition ON)
V
ign
> V
Tign
, V
rem
= V
ph
= V
set
, T
A
= 25°C
V
ign
> V
Tign
, V
rem
= V
ph
= V
set
, -40°C
≤
T
A
≤
125°C
Standby Drain Current (Ignition OFF)
V
ign
< V
Tign
, V
ph
= 0 V, V
rem
= V
bat
= 12.6 V, T
A
= 25°C
V
ign
< V
Tign
, V
ph
= 0 V, V
rem
= V
bat
= 12.6 V, -40°C
≤
T
A
≤
125°C
Remote Loss Voltage Threshold
Phase Detection Threshold Voltage
Undervoltage Threshold Voltage
V
set
= 14.8 typical
V
set
= 14.6 typical
Overvoltage Threshold Voltage
V
set
= 14.8 typical
V
set
= 14.6 typical
Overvoltage Threshold Voltage TC
Load Dump Threshold Voltage
V
set
= 14.8 typical
V
set
= 14.6 typical
Load Dump Threshold Voltage TC
Secondary Regulation
V
set
= 14.8 typical
V
set
= 14.6 typical
Secondary Regulation TC
Secondary Load Dump Threshold Voltage
V
set
= 14.8 typical
V
set
= 14.6 typical
Secondary Load Dump Threshold Voltage TC
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
For More Information On This Product,
Go to: www.freescale.com
33099
5
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