© by SEMIKRON / 2020-05-25 / Technical Explanation / SKYPER
®
12 PV
PROMGT.1026/ Rev.7/ Template Technical Explanation
Page 15/37
4.5
Filter selection, jitter and propagation delay time | Primary side
SEMIKRON’s highly-integrated mixed signal ASICs the SKYPER
®
12 PV permit the selection of filter type,
jitter and propagation delay time to meet specific requirements of applications.
The filter time can be set via the configuration pin CFG_FLT. Connecting the CFG_FLT pin to the PWR_VS
pin enables the digital filter employing very low tolerances over the full temperature range.
Depending on the settings made the SKYPER
®
12 PV driver provides a very low jitter of typically ±3ns. For
this mode, the analogue filter has to be enabled and the driver’s internal dead time generator has to be set
inactive. The dead time generator is inactive, if either the interlock feature is disabled via the CFG_IDT pin
or the dead time of the applied pulse pattern is longer than the dead time of internal generator of the
driver of typically 2µs. A detailed description of the interlock function and the dead time generation is
referred in chapter 5.2.
CFG_FLT
CFG_IDT
Setting
Filter time
Delay time
Jitter
HIGH
HIGH/LOW
Digital filter
390ns
830ns
±12.5ns
LOW
LOW
Analogue filter
200ns
500ns
±3ns /±12.5ns
LOW
HIGH
Analogue filter
200ns
500ns
±3ns
4.6
Error output | Primary side
The SKYPER
®
12 PV reports any detected error event at the nERR_OUT pin by pulling it to low-level. The
error output is an open collector output and requires an external pull-up resistor (R
nERR_OUT
). The
recommended value of the pull-up resistor is in the range of
𝑃𝑊𝑅_𝑉𝑆 𝐼
𝑚𝑎𝑥,𝑛𝐸𝑅𝑅_𝑂𝑈𝑇
≤ 𝑅
𝑛𝐸𝑅𝑅_𝑂𝑈𝑇
⁄
≤ 10𝑘Ω
.
As long as the driver has not been reset the error output will be at low-level.
A detailed description, how to reset the driver to exit the error state and resume to operation is described
in chapter 5.1.
Figure 11: SKYPER
®
12 PV | Primary side | Error output
Please note, if the nERR_OUT terminal of SKYPER
®
12 PV is directly connected to a nERR_OUT terminal of
another SKYPER
®
12 PV driver, only one pull-up resistor must to be applied.
SKYPER
®
12 PV
PWR_VS
nERR_OUT
nERR_OUT
X10:03
PWR_VS
X10:09
PWR_GND
PWR_GND
X10:01
R
n
E
RR
_
O
U
T
