E981.07 Datasheet, PDF (7/46 Pages) ELMOS Semiconductor AG – Two independent operating channels

Two Channel Sensor Interface PSI5
ADVANCE PRODUCT INFORMATION JUL 26, 2011
E981.07
3.2.2 Operating Conditions for Synchronous Parallel Bus Mode (PSI5-P10P-500/3L)
Parameter
Symbol
Min.
Typ.
Max.
unit.
ECU Bus capacitance
CE+CEopt
15
35
nF
ECU resistance
RE
5
12
Ω
ECU Bus capacitance
CEopt
0
22
-
nF
Satellite capacitance
CS
9
-
24
nF
Total Bus capacitance
CE+CSx (x=1...3)
24
-
107
nF
ECU connector resistance
RCE
-
0.2
-
Ω
Satellite connector resistance
RCS
-
0.2
-
Ω
Single wire resistance
RW/2
-
0.5
-
Ω
Overall wire resistance incl. wire 2*(RCE+RW/2+RCS)
-
-
2.5
Ω
Wire inductance
LW
-
-
8.7
μH
Wire capacitance
CW
-
-
600
pF
Sync signal period
TSYNC
495
500
505
μs
Satellite bit rate functional range FSAT_FUNC =1/TBIT
119
125
132
kHz
Satellite bit duty cycle
DC
47
50
53
%
Slot 1 start time (see figure 5.1-6)
Slot 1 end time
tSlot1_Start
44
-
-
μs
170.8
µs
Gap time (see figure 5.1-6)
TGAP> TBIT
8,4
-
-
μs
Slot 2 start time (see figure 5.1-6) _{tSlot2_Start}
177
181.3
-
μs
Slot 2 end time
318.4
µs
Slot 3 start time (see figure 5.1-6) tSlot3_Start
322
328.9
-
μs
Slot 3 end time (see figure 5.1-6) tSlot3_End
-
-
492
μs
Satellite quiescent current range ISAT_Q_range
-35
-
-4
mA
Satellite modulation current range ISAT_mod_range
-30
-26
-22
mA
① CE: ECU connector capacitance, CE+CEopt >22nF needed to ensure system-level ESD performance,
② RE: series resistor, improves damping in case of long wires and large inductive loads,
➂ CEopt: capacitor at IC-pin, removes oscillations in short circuit conditions, min. and max. values for CE, RE,
CEopt needed to be in accordance to PSI-5 specification.
ELMOS Semiconductor AG
Data Sheet 7 / 45
QM-No.: 25DS0050E.00
This document contains information on a new product. ELMOS Semiconductor AG reserves the right to change specifications and information herein without notice.