L6100200 SEMIKRON [Semikron International], L6100200 Datasheet - Page 6

• Manufacturer Part Number: L6100200
• Description: SKYPER 32PRO
• Manufacturer: SEMIKRON [Semikron International]

SKYPER™ 32PRO -
Driver Performance
The driver is designed for application with half bridges or single modules and a maximum gate charge per pulse
< 6,3µC. 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 -7V. Therefore, the gate voltage will change by 22V during
each switching procedure. Unfortunately, many datasheets do not show negative gate voltages. In order to
determine the required charge, the upper leg of the charge curve may be prolonged to +22V for determination of
approximate charge per switch.
The medium output current of the driver is determined by the switching frequency and the gate charge. The
maximum switching frequency may be calculated with the shown equations.
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 power supply are not required.
Auxiliary Power Supply
A few basic rules should be followed when dimensioning the customer side power supply for the driver. The
following table shows the required features of an appropriate power supply.
The supplying switched mode power supply may not be turned-off for a short time as consequence of its current
limitation. Its output characteristic needs to be considered. Switched mode power supplies with fold-back
6 / 16
f
Iout
Q
Calculation Switching Frequency
max
Creepage and Clearance Distance in mm
Primary to secondary
Requirements of the auxiliary power supply
Regulated power supply
Maximum rise time of auxiliary power supply
Minimum peak current of auxiliary supply
Power on reset completed after
Please note:
The maximum value of the switching frequency is limited to 50kHz due to switching reasons.
GE
:
AVmax
:
: Maximum output average current
Gate charge of the driven IGBT
Maximum switching frequency
f
max
=
Iout
Q
AV
GE
max
Technical Explanations
Maximum Switching Frequency @ different Gate Charges @ T
2005-06-03 – Rev02
60 kHz
50 kHz
40 kHz
30 kHz
20 kHz
10 kHz
0 kHz
0 µC
Min. 12,2
+15V ±4%
50ms
1A
150ms
1 µC
2 µC
3 µC
gate charge
4 µC
Please note:
Do not apply switching
signals during power on
reset.
5 µC
© by SEMIKRON
6 µC
amb
=25°C
7 µC