© by SEMIKRON / 2020-05-25 / Technical Explanation / SKYPER
®
12 PV
PROMGT.1026/ Rev.7/ Template Technical Explanation
Page 16/37
4.7
Error input | Primary side
The nERR_IN input is optionally used to report a system related external error event to the
SKYPER
®
12 PV. If the nERR_IN input is pulled down to low-level the driver enters into error state.
Depending on the error mode configuration, described in chapter 4.8, the driver sets its outputs either
immediately or with the next turn-off command at its corresponding input to low-level and locks them.
After reset, as described in chapter 5.1, the driver will be ready to transfer the signals to the output stage
again. If no reporting to the external error input is required, the nERR_IN input can be connected to the
PWR_VS pin or to the nERR_OUT pin.
In multiphase or parallel operation the nERR_IN input offers the possibility to force the outputs of each
driver in the system to off-state and locks them, simultaneously, without the need of an external control
unit. Therefore all nERR_OUT outputs and all nERR_IN inputs have to be connected together forming a
common bi-directional HALT line. Additionally, all CFG_ERR configuration pins have to be connected to
ground potential, as shown in Figure 12. In this configuration, any driver connected to the HALT line can
force the outputs of all connected drivers to off-state and locks them, when the driver pulls its nERR_OUT
output to low-level.
If a specific turn-off sequence is required – as it is common practice in NPC multilevel applications – the
configuration pins CFG_ERR have to be connected to the PWR_VS pins. A low-level of the HALT line locks
the outputs of the connected drivers, but does not immediately force them to low-level. Outputs which are
in on-state can be forced to off-state by the controller sending a turn-off command to the corresponding
signal inputs TOP_IN/BOT_IN.
If the driver is used in environments with high levels of EMI noise, it is recommended to connect an
additional filter capacitor as close as possible to the nERR_IN pin and the PWR_GND pin.
Figure 12: SKYPER
®
12 PV | Primary side | Error input
Parameter
Min
Typ
Max
Threshold high
-
-
11 V
Threshold low
7.5 V
-
-
SKYPER
®
12 PV | 1
PWR_VS
nERR_OUT
nERR_OUT
X10:03
PWR_VS
X10:09
PWR_GND
X10:01
R
n
E
RR
_
O
U
T
SKYPER
®
12 PV | 2
nERR_OUT
X10:03
nERR_IN
X10:04
PWR_GND
PWR_GND
X10:01
nERR_IN
X10:04
X10:05
CFG_ERR
X10:05
CFG_ERR