Control Card Connector (Con18); External I/O (Con6) - Wolfspeed SpeedVal MOD-MB-3P-0900V-40A Series User Manual

2.7 Control Card Connector (CON18)

The motherboard supports control cards from industry-leading partners. The MOD-MB-3P-0900V-40A-N
motherboard supports the NXP® card interface. The MOD-MB-3P-0900V-40A-T motherboard supports the
Texas Instruments® control card interface.
Adapter boards may be available upon request from Wolfspeed to accommodate using either control board
on a single motherboard.

2.8 External I/O (CON6)

The external I/O connector provides provisions for the user to implement functions in the control firmware
to interface with external circuits such as switches, enable/disable signals, fault outputs, and indicators to
allow for additional system development and testing. These signals are referenced to control ground and
should not be tied to other potentials or high-voltage circuitry without proper isolation.
Open Drain Outputs
The digital outs are open drain signals and require an external pullup for proper operation. The maximum
voltage the signals can pull is 24 V and the maximum sink current is 20 mA.
Digital Inputs
The digital input signals support 0-3.3V digital input logic.
PRD-08611 REV. 1, June 2024
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the Wolfspeed logo are trademarks of Wolfspeed, Inc. Other trademarks, product and company names are the property of their
respective owners and do not imply specific product and/or vendor endorsement, sponsorship or association.
Speedval
Mainboard
VCC
+
5k
I
SINK
Control
Board
Figure 10: External digital output
Speedval
Mainboard
Control
3.3V
Board
Digital
Input
Figure 11: External digital input
MOD-MB-3P-0900V-40A SpeedVal™ Kit Three-Phase Motherboard User Guide
External Digital
Output
Parameter Max
VCC +24 V
ISINK 20 mA
External Digital Input
Parameter Max
Logic low 0.8 V 0.0 V
Logic high 3.3 V 2.2 V
Min
20