1. Introduction...............................................................................................................................1
1.1 Features ..............................................................................................................................2
1.2 Hardware of the SEMITOP E2 1200V MLI Inverter Board ............................................................2
2. Safety Instructions .....................................................................................................................4
3. Technical Data ...........................................................................................................................6
3.1 Inverter board block diagram..................................................................................................6
3.2 Electrical and mechanical characteristics ..................................................................................6
3.3 Integrated functions ..............................................................................................................9
3.3.1 Gate protection............................................................................................................. 10
3.3.2 VCE,desat diodes .............................................................................................................. 10
3.3.3 Active clamping ............................................................................................................ 10
3.4 Board description ................................................................................................................ 10
3.4.1 Plugs for driver board adaptation ....................................................................................11
3.4.2 Active clamping ............................................................................................................ 11
3.4.3 Plugs for driver board adaptation ....................................................................................12
4. User Interface .......................................................................................................................... 13
4.1 Driver board interface..........................................................................................................13
4.2 DC and AC interface ............................................................................................................ 13
5. Restrictions and Requirements ................................................................................................... 14
5.1 Switching pattern of (T)MLI modules ..................................................................................... 14
5.2 Error treatment................................................................................................................... 14
5.3 Design limits active clamping................................................................................................ 14
5.4 Design limits switching frequency.......................................................................................... 14
5.5 Design limits ambient temperature ........................................................................................ 14
5.6 SEMIKRON assembly ........................................................................................................... 14
1. Introduction
SEMIKRON set up a 3-phase inverter board for operating SEMITOP E2 1200V MLI modules for evaluation
purposes. The SEMITOP E2 1200V MLI Inverter Board (“inverter board”) is designed to operate with three
SKYPER12 (T)MLI Driver Boards (also a SEMIKRON Application Sample; Technical Explanation available),
one per phase leg. It is designed to operate the module up to a DC-link voltage of 1500V (limited by
insulation coordination) at a maximum switching frequency of 30kHz (limited by insulation coordination);
i.e. higher switching frequencies are possible with a revision of the insulation coordination and the
limitation of the gate driver needs to be taken into account.
Three driver boards (SKYPER 12 (T)MLI Driver Board) are mounted to the inverter board, one per phase
leg (one driver operates switches T1 and T2, the other operates switches T3 and T4). The 1200V MLI phase
leg is split in two SEMITOP E2 module housings, one inheriting switches T1, D1, T2, D2 and D5, the other
housing T3, D3, T4, D4 and D6 (see Figure 1).
The inverter board provides active clamping diodes for all switches and VCE,desat detection diodes for the
outer switches T1 and T4 utilizing the driver boards’ protection functionality. Further all modules have a
built-in NTC sensor (six in total) which are all monitored.
Please read also the Technical Explanation –SKYPER12 (T)MLI Driver Board for detailed information on the
driver boards used together with the inverter board described in this document.
