7
CPWR-AN17, Rev -, 05-2016
Copyright © 2016 Cree, Inc. All rights reserved.
The information in this document is subject to change without notice.
Cree, the Cree logo, and Zero Recovery are registered trademarks of Cree, Inc.
8
8
1nf
5.1K
CLAMP
OUT
100
DESAT
3.3V
J6
12V
18V
3.3V
COM
-3.3V
+15V
+15V
VCC
VEE
GND
COM
J2
-3.3V
J1
+12V
8
8
1nf
5.1K
CLAMP
OUT
100
DESAT
3.3V
J5
12V
18V
3.3V
COM
-3.3V
+15V
+15V
VCC
VEE
GND
COM
J4
-3.3V
J3
+12V
Figure 3. Gate Drive Circuit
Table 1 shows how the jumpers should be configured depending on the desired gate drive output
levels.
+15V/-3V
+15V/0V
JM1, JM3
SHORT
OPEN
JM2, JM4
OPEN
SHORT
JM5, JM6
OPEN
SHORT
Gate Drive Output
Table 1. Jumper Table
There is a short circuit protection function for each gate drive circuit by means of Vds voltage
monitoring. The drain of each MOSFET is monitored (Figure 4). When either of the MOSFETs is in
the ON state, and the drain voltage exceeds approximately 5.7V, the gate driver reverts to the OFF
state and the fault signal for the channel is toggled.
