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Motorola Electronic Components Datasheet

MC33099 Datasheet

Adaptive Alternator Voltage Regulator

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MOTOROLA
Freescale Semiconductor, Inc.
SEMICONDUCTOR TECHNICAL DATA
Document order number: MC33099
Rev 4.0, 07/2004
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
• Vset 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) Vset
33099
ALTERNATOR VOLTAGE
REGULATOR
DW SUFFIX
CASE 751G-04
16-TERMINAL SOICW
ORDERING INFORMATION
Device
Temperature
Range (TA)
Package
MC33099DW/R2
MC33099CDW/R2
-40°C to 125°C
16 SOICW
33099SSimimplpifileifdieAdppAlipcaptliiocnaDtiioangraDmiagram
33099
PHASE
GATE
SOURCE
PHASE FILTER
FIELD
WINDING
IGN
LAMP DRAIN
BAT
REMOTE
LRC1
LRC2
AGND
GND
IGNITION
SWITCH
CHASSIS
© Motorola, Inc. 2004
For More Information On This Product,
Go to: www.freescale.com


Motorola Electronic Components Datasheet

MC33099 Datasheet

Adaptive Alternator Voltage Regulator

No Preview Available !

Freescale Semiconductor, Inc.
REMOTE
Vrem Remote
Vrs
CB1
Local Vl
LSoecnasle Vls
0.6 V
LB
Crs
R1
PHASPhEase
R2
R3
PHAPShEase
FILTFEilRter
Cph
RF
Vo
Low
Pass
Cf
S1 R4
R5
CB2
S2
F1
Vhvl
DAC
1.25 V
F2
101 kHz
Osc
To
Logic P16
4 LSB 4 MSB
8-Bit Counter
P256
A/D Duty Cycle
Comparator
& Tracking
Circuit
u/d
Up/Down
Control
Switch
Digital
Duty Cycle
Generator
U/D
Counter
u/d
Np
BBaAtteTry
Charge
VDD
Internal
V reg
Pump
Regulator
Regulator
and Bias
FB
Vfb
Bandgap
Reference
Current
Regulator
Vg
Regulator
(OTC)
1.25 V
Vref
(2.0 V)
VDD
(5.0 V)
Cuv
1.25 V
UV
Min Duty
Cycle
Generator
Over
Voltage
Detector
LD
OV
OR1
Ign
Gate
Polling
Circuit
Css
lpu
A
N
S3 GGAaTE
D
4
Battery
VTssc lpd
Z1
SSOoURCE
Delay
Cdc
Circuit
IIGGNN
Vdac
1
2
10 A
11 N
MUX
D
3
A
N
D
1
OR2
A
N
D
2
Lamp
Polling
Circuit
Cign
Drain
Polling
Circuit
1.25V
VTigm Iign
Cds
Lamp
Driver
Circuit
Z2
Battery
VTdsc
LLaAmMP
DDrRaiAn IN
LLaAmMP
GGaAteTE
Thermal
Limit
Detector
Dtl
Current
Limit
Detector
Rs
LCR Test
LCR1 LRC2
LRC TEST LRC1 LRC2
AGnd
AGND
Gnd
GND
Figure 1. 33099 Simplified Internal Block Diagram
33099
2
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
For More Information On This Product,
Go to: www.freescale.com


Part Number MC33099
Description Adaptive Alternator Voltage Regulator
Maker Motorola
PDF Download

MC33099 Datasheet PDF






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