SEMIKRON L5064101, Technical Explanations

Page: 10 / 20

Technical Explanation
SKiiP
®
3 Parallel Board
© by SEMIKRON 2017-08-30
– Rev02
10 / 20
7 Auxiliary Power Supply
Connector X2 is used to supply the parallel board and the connected SKiiP subsystems.
Table 2 shows the 24V Power supply connector pin assignment.
Pin Signal name Function Specification
1 Shield Shielding

For shielded cable
2 GND Ground
3 +24V Supply voltage input for Parallel
board and SKiiP
®
3
“A” to “D”

See Table 3
Table 3 shows the required features of an appropriate power supply for a SKiiP
®
3 system.
Table 3: Requirements of the auxiliary power supply
Power supply Supply voltage should be +24V (+/- 20%)
Maximum rise time of 24V 50ms
Rated current 1,5 times of the maximum driver input current
Minimum peak current of auxiliary supply
2 times of the maximum driver input current
(At least 8A for 4 connected SKiiP
®
3 subsystems)
For further information please refer to the Technical Explanation SKiiP
®
3, Rev.2.
8 Digital Input/Output Signals
8.1
TOP/BOT switching signals
The main purpose of SKiiP
®
3 Parallel board is the routing of the TOP/BOT switching signals from controller
connector X1 to all four SKiiP
®
3 connectors X3/X4/X5/X6. The routing includes the following tasks:
- Logic Level detection of TOP/BOT signals;
- Short pulse suppression and extension of TOP/BOT signals (See Chapter 13);
- Generation of Interlock time for all connected SKiiP
®
3 (See Chapter 11 for detailed information and
corresponding data sheet for t
TD
time value).
The characteristics of switching signal can be found in the Table 4.
Table 4: Digital signal characteristic TOP/BOT input
Signal name
TOP In
BOT In
input threshold voltage (High)
12,3V
input threshold voltage (Low)
4,6V
Table 2: 24V Power supply connector pin assignment
Please note: Use for 24V power supply wire size of 2.5 mm
2
to withstand max. nominal current of 8A.
The minimal possible supply voltage on SKiiP
®
3 Parallel board is therefore 19,2 V, which should be
measured at SKiiP
®
3 Parallel board input, not at controller output (voltage drop on connection cable).
Please note: Power supply cable should be twisted or screened to enhance the EMC robustness.