Power Supply Function
Table 4–1 Parameter Description
Parameters 12V 24V
V
S
(From V
B
) -4V to -7V -5V to -16V
V
a
(From V
B
) -2.5 to -6V with |V
a
|≤|V
S
| -5 to -12V with |V
a
|≤|V
S
|
R
i
0Ω to 0.02Ω 0Ω to 0.02Ω
t
7
15 to 40ms
(1)
50 to 100ms
(1)
t
8
≤50ms ≤50ms
t
9
0.5 to 20s
(1)
0.5 to 20s
(1)
t
10
5ms 10ms
t
11
5 to 100ms
(2)
10 to 100 ms
(3)
(1). The value used should be agreed between the vehicle manufacturer and
the equipment supplier to suit the proposed application.
(2). t
11
=5 ms is typical of the case when engine starts at the end of the crank-
ing period, while t
11
=100 ms is typical of the case when the engine does not
start.
(3). t
11
=10 ms is typical of the case when engine starts at the end of the crank-
ing period, while t
11
=100 ms is typical of the case when the engine does not
start.
Test–5
For the details, please refer to the Load Dump Dynamic Behavior.
4.6.3.5 LV123
LV123 has been compiled for the electrical characteristics of new energy ve-
hicles for major European car manufacturers. For its high-voltage system parts,
the state standard within its operating voltage range is defined. The relevant pa-
rameters are introduced as follows:
Please pay attention to whether the voltage value defined in the LV123
standard matches the rated voltage of the instrument, otherwise some
waveforms cannot be recalled.
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