SKHI 10/12R Sindopower / Semikron, SKHI 10/12R Datasheet - Page 4

• Manufacturer Part Number: SKHI 10/12R
• Description: High Power IGBT Driver PCB
• Manufacturer: Sindopower / Semikron

Specifications of SKHI 10/12R

• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

can be selected by carefully soldering the small areas of
J1 together, specially useful for signals coming from P
based controllers.
Fig.3 Selecting J1 for 5V level (TTL)
When connecting the SKHI10 to a control board using
short connections no special attention needs to be taken
(Fig. 4a).
Fig.4a Connecting the SKHI10 with short cable
Fig.4b Conneeting the SKHI10 with long cable
Otherwise, if the length is 50cm or more (we suggest to
limit the cable length to about 1 meter), some care must
be taken. The TTL level should be avoided and CMOS/
15V is to be used instead; flat cable must have the pairs
of conductors twisted or be shielded to reduce EMI/RFI
susceptibility (Fig. 4b). If a shielded cable is used, it can
be connected to pin 1. It is coupled to 0V through a
resistor (0
As
SELECTOR circuit is very high, an internal pull-down
resistor keeps the IGBT in OFF state in case the Vin
connection is interrupted or left non connected.
2. Input buffer
This circuit enables and amplifies the input signal V
be transferred to the pulse transformer when RESET
(pin 4) is LOW and also prevents spurious signals being
transmitted to the secondary side.
The following overview is showing the input treshold
voltages
© by SEMIKRON 18-08-2006
V
IT+
the
15 V
5 V
(High)
input
).
impedance
9,5 V
1,8 V
min
of
11,0 V
2,0 V
typ
the
INPUT
12,5 V
2,4 V
max
LEVEL
in
to
3. Error memory and reset signal
The ERROR memory is triggered only by following
events:
• short circuit of IGBTs
• V
In case of short circuit, the V
signal (fault signal) through the impulse transformer to a
FLIP-FLOP on the primary side giving the information to
an open-collector transistor (pin 3), which may be
connected to the external control circuit as ERROR
message in HIGH logic (or LOW if J3 is short-circuited). If
V
same FLIP-FLOP is set and pin 3 is activated. For HIGH
logic (default), an external R
preferentiatty in the control main board. In this way the
connection between main board and driver is also
checked.
If low-logic version is used (J3 short-circuited), an internal
pull-up resistor (internally connected to V
and the signal from more SKHI10s can be connected
together to perform an wired-or-circuit.
Fig.5 Driver status information ERROR, and RESET
The
RESET=HIGH (pin4) or by switching the power supply
(V
than 5 s, and in case of interrupted connection an
internal pull-up resistor will act.
1
Table 1 ERROR signal truth table
The open-collector transistor (pin 3) may be connected
through a pull-up resistor to an extemal (intemal V
‘‘low-logixc‘‘ version) vorltage supply +5V...+24V, limiting
the current to l
) default logic (HIGH); for LOW logic the signals are
S
S
V
power supply falls below 13V for more than 0,5ms, the
complementary
) off. The width of the RESET pulse must be more
FAULT
S-
IT-
15 V
yes
yes
5 V
undervoltage
no
no
(Low)
ERROR
sink
Driver Electronic – PCB Drivers
signal may
RESET
0,50 V
3,6 V
6mA.
min
0
1
0
1
CE
be
ERROR
0,65 V
C
monitor sends a trigger
4,2 V
typ
0
0
1
0
must be connected
disabled
1)
S
) is provided,
either
disable
disable
disable
enable
0,80 V
4,8 V
max
V
S
in
for the
by
4