SKYPER42R Datasheet, PDF (12/18 Pages) Semikron International – IGBT Driver Core

SKYPER^® 42 R
3.9. External Boost Capacitors (BC) -Secondary
The rated gate charge of the driver may be increased by additional boost capacitors to drive IGBT with large
gate capacitance.
Connection External Boost Capacitors
Dimensioning of Cboost
SKYPER 42 R has internal gate capacitors of 2.5 µC
Using external capacitors:
4µF = 1µC
The boost capacitors on C15 and C-8 should be chosen with the
same values
Please consider the maximum rating four output charge per
pulse of the gate driver.
The external boost capacitors should be connected as close as
possible to the gate driver and to have low inductance.
4. Protection features
4.1. Failure Management
Any error detected will set the error latch and force the output PRIM_nERROR_OUT into HIGH state. Switching
pulses from the controller will be ignored. Connected and switched off IGBTs remain turned off. The switched
off IGBTs remain turned off.
The output PRIM_nERROR_OUT is an open collector output. For the error evaluation an external pull-up-
resistor is necessary pulled-up to the positive operation voltage of the control logic (LOW signal = no error
present, wire break safety is assured).
Open collector error transistor
Application hints
An external resistor to the controller logic high level is required.
The resistor has to be in the range of V / Imax < Rpull_up < 10kΩ.
Rest when TOP/BOT signals set to low for tpERRRESET > 9µs
PRIM_nERROR_OUT can operate to maximum 30V and can
switch a maximum of 15mA.
Example:
For V = +15V the needed resistor should be in the range
Rpull_up = (15V/15mA) … 10kΩ ⇒ 1kΩ… 10kΩ.
Please note:
The error output PRIM_ERROR_OUT is not short circuit proof.
11
2011-04-04 – Rev05
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