80310 Datasheet, PDF (16/31 Pages) Freescale Semiconductor, Inc – Alternator Regulator with LIN High side field driver

FUNCTIONAL DEVICE OPERATION
STATE MACHINE
• All the blocks are on
• There is no regulation. DC=0%
After a 100 ms timeout, if the speed has not reached
f_START, then the device goes back to Standby mode.
EXCITATION 100% DC:
When the speed has reached Start_aa, then the device
goes into this state until the high phase appears, or during a
100 ms maximum.
• The logic is out of reset.
• All the blocks are on.
• There is no regulation. DC = 100%
Start_aa (see Table 1): is a special threshold for the self-
start when it is in Wake-up mode, before going in EXC 100%
DC, waiting for high phase. Once high phase appeared the
state machine is exactly the same as with LIN wake-up
Start_aa can be programmed at 3000 rpm or 4000 rpm.
REGULATION WITH LRC:
In this mode, the 80310 regulates the alternator output to
the set reference level. The excitation is controlled by LRC, if
B+A is lower than V_REG. DC can not be lower than DC_MIN.
This LRC mode is active until the detection of phase stop
regulating RPM (f_STOP). In this case, the device goes back to
the Pre-excitation mode. If the phase frequency reaches the
LRC disable RPM default (f_LRC), the device goes into
regulation without LRC.
REGULATION WITHOUT LRC:
This mode is active when the phase frequency is above
the LRC disable RPM default (f_LRC), the first V_REG was
reached with LRC.
The excitation is controlled only by the internal comparator
of B+A and V_REG. The DC can not be lower than DC_MIN.
If the phase frequency goes below the LRC disable RPM
default (f_LRC), then the 80310 comes back to the regulation
with LRC mode. If the phase frequency goes below the phase
stop regulating RPM, the device goes to Pre-excitation mode.
RE-REGULATION:
The excitation is forced to 100%. This mode is active if
there is no high phase on non active phase (PHx < V_PH) in
the previous cycle, until the high phase comes back. At the
end of the 8^th cycle, if there is still no high phase, the
regulation mode is set to off and the device goes back to the
regulation mode, with or without LRC.
LIN BUS INFORMATION:
The operational control and programming, required in the
end application, is carried out through the LIN interface. Refer
to Tables 7 to 15.
The regulator shall only give pre-excitation when it
receives a LIN command targeted for it, the shutdown
command is the code that would otherwise set 10.6 V
(“000000”).
LIN addresses are listed in MID format, Table 8, while the
data fields are listed in [MSB:LSB] format
Table 10 lists the values for the Target/Programmed
Regulated voltage contained in the Alternator A/B write data
field (ID=29, 2A), byte 1.
Table 11 lists the values for the LRC Ramp Time and
Ramp Cut-off contained in the Alternator A/B write data field
(ID=29,2A), byte 2.
Table 12 lists the values for the die Temperature
contained in the Alternator A/B read data field (ID=11, 13),
byte 2.
Table 13 lists the values for the alternator Excitation
Current contained in the Alternator A/B read data field(ID=11,
13), byte 2, as well as the Excitation duty cycle contained in
the Alternator A/B read data field (ID=11, 13), byte1.
Table 14 lists values for the excitation Current Limit
contained in the Alternator A/B write data field (ID=29, 2A),
byte 3.
Table 15 lists the values for the alternator Manufacturer
and Class code contained in the Alternator A/Bread data field
(ID=12, 14), byte 1.
80310
16
Analog Integrated Circuit Device Data
Freescale Semiconductor