SKYPER42R Datasheet, PDF (16/18 Pages) Semikron International – IGBT Driver Core

SKYPER^® 42 R
5. Electrical Characteristic
5.1. Driver Performance
The driver is designed for application with half bridges or single modules and a maximum gate charge per pulse
< 100C (2,5µC on the driver). The charge necessary to switch the IGBT is mainly depending on the IGBT’s chip
size, the DC-link voltage and the gate voltage. This correlation is shown in module datasheets. It should,
however, be considered that the driver is turned on at +15V and turned off at -8V. Therefore, the gate voltage
will change by 22V during each switching procedure. The medium output current of the driver is determined by
the switching frequency and the gate charge.
Calculation Switching Frequency
f_max
=
Iout _AVmax
Q_GE
fmax:
Maximum switching frequency *
IoutAVmax: Maximum output average current
QGE:
Gate charge of the driven IGBT
* @ Tamb=25°C
Maximum Switching Frequency @ different Gate Charges @ Tamb=25°C
100 kHz
80 kHz
60 kHz
40 kHz
20 kHz
0 kHz
1 µC
10 µC
gate charge
100 µC
5.2. Insulation
Magnetic transformers are used for insulation between gate driver primary and secondary side. The transformer
set consists of pulse transformers which are used bidirectional for turn-on and turn-off signals of the IGBT and
the error feedback between secondary and primary side, and a DC/DC converter. This converter provides a
potential separation (galvanic separation) and power supply for the two secondary (TOP and BOT) sides of the
driver. Thus, external transformers for external power supply are not required.
Creepage and Clearance Distance
mm
Creepage Distance Primary to Secondary (Reinforced according to EN50178)
12,2
Clearance Distance Primary to Secondary (Reinforced according to EN50178)
8
Creepage Distance Secondary to Secondary (according to EN50178)
6,1
Clearance Distance Secondary to Secondary (according to EN50178)
4,1
Insulation parameters
Climatic Classification Pollution Degree (PD)
Maximum altitude (above sea level)
Overvoltage category (according to EN50178)
Isolation resistance test, Prim-Sec
Rated insulation voltage (EN60664-1)
Rating
PD2
2000 meter above sea
OVC 3
4000 VDC/AC, rms,2s
8 kV Kat. III
15
2011-04-04 – Rev05
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