S0700KC17T
| Model | S0700KC17T |
| Description | Symmetrical GTO SCR, 870A I(T)RMS, 1700V V(DRM), 255V V(RRM), 1 Element |
| PDF file | Total 15 pages (File size: 181K) |
| Chip Manufacturer | IXYS |
WESTCODE
An IXYS Company
Symmetrical Gate Turn-Off Thyristor type S0700KC17#
The curves of figure 13 give the turn-off energy for a fixed V
D
with a V
DM
=120%V
D
, whereas the curves of
figure 14 give the turn-off energy with a fixed value of V
DM
and V
D
=50%V
DRM
. The curves are for energy
against turn-off current/snubber capacitance with a correction for voltage inset as an additional graph
(snubber equivalent to diagram 2 is assumed). From these curves a typical value of turn-off energy for any
combination of I
TGQ
/C
s
and V
D
or V
DM
can be derived. Only typical data is included, to allow for the trade-
off with on-state voltage (V
TM
) which is a feature of these devices, see diagram 13. When calculating
losses in an application, the use of a maximum V
TM
and typical E
off
will (under normal operating
frequencies) give a more realistic value. The lowest V
TM
device of this type would have a maximum turn-
off energy of 1.5x the figure given in the curves of figures 13 & 14.
Trade-off between V
TM
& E
off
E
off
Diagram 13.
V
TM
2.8 Safe turn-off periphery
The necessity to control dv/dt at tun-off for the GTO thyristor implies a trade-off between I
TGQ
/V
DM
/C
s
. This
information is given in the curves of figures 15 & 16. The information in these curves should be
considered as maximum limits and not implied operating conditions, some margin of 'safety' is advised
with the conditions of the curves reserved for occasional excursions. It should be noted that these curves
are derived at maximum junction temperature, however, they may be applied across the full operating
temperature range of the device provided additional precautions are taken. At very low temperature,
(below –10°C) the fall-time of device becomes very rapid and can give rise to very high turn-off voltage
spikes, as such it is advisable to reduce snubber loop inductance to <0.2µH to minimise this effect.
Data Sheet. Type S0700KC17# Issue 1
Page 9 of 15
July, 2004
