© by SEMIKRON / 2020-05-25 / Technical Explanation / SKYPER
®
12 PV
PROMGT.1026/ Rev.7/ Template Technical Explanation
Page 25/37
5.3
Short pulse suppression (SPS)
The SKYPER
®
12 PV driver suppresses short on- and off-pulses at the signal inputs TOP_IN/BOT_IN and,
hence, enhances the interferences ruggedness. The time of suppression corresponds to the filter time set
by the customer via the configuration pin CFG_FLT, as described in chapter 4.5.
Figure 17: SKYPER
12 PV | Short Pules Suppression
5.4
Undervoltage lockout (UVLO)
The SKYPER
®
12 PV driver permanently monitors the supply voltage of the primary side as well as both
positive and both negative gate voltages of the secondary sides. If either the supply voltage or a positive
gate voltage drops below the ‘shutdown’ threshold levels the driver enters into error state. The same
applies when a negative gate voltage exceeds the ‘shutdown’ threshold level. Once entered into error state
the driver executes its error routine as described in chapter 5.1.
The error condition resets when the supply voltage and both positive gate voltages have exceeded the
‘non-error’ threshold level and both negative gate voltages have dropped below the ‘non-error’ threshold
level. The driver will be ready again for operation after reset, as described in chapter 5.1
Parameter
Min
Typ
Max
Primary side shutdown threshold
12.2V
Primary side non-error threshold
13.9V
Secondary side shutdown threshold, positive gate voltage
9.4V
Secondary side non-error threshold, positive gate voltage
13.3V
Secondary side shutdown threshold, negative gate voltage
-4.1V
Secondary side non-error threshold, negative gate voltage
-5.8V
V
t
t
V
V
IH
V
IL
V
G(on)
V
G(off)
INPUT
OUTPUT
