HI Power Supply User Manual
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An antiparallel diode should be connected across each module’s terminal to
prevent sinking of current
into one module when it is OFF while the others are ON. The diode should be capable of carrying the
maximum current and the forward voltage (Vf) drop should be lower than what is in the table below.
4. Digital Communication
Digital communication is necessary to setup and operate the HI-power system. Digital communication
will be used to:
• Read the configuration setting of the HI
-power
• Change the configuration setting of the HI
-power
• Voltage, current, temperature, and power reporting
• Status reporting
The communication with the HI-power system is controlled through the HI-power COMMD (isolated
communication) part of the power supply. All commands are sent to or from HI-power COMMD through
the digital communication link. After sending the command to HI-power COMMD, COMMD will process
and send the information to the internally installed module. COMMD acts as a bridge between HI-power
internal communication and HI-power external communication.
Inside the HI-power rack, there is an internal communication bus. The installed module and COMMD are
both connected to this internal communication bus but are electrically isolated from each other
according to safety requirements. COMMD manages the internal communication and external
communication of Hi-power. Once COMMD receives the user's command, COMMD will transmit the
command to the module. If the user needs data from the module, the module device will transmit the
data to COMMD, and COMMD will send the data to the user.
Model Number
Model Code
Max Voltage
Rating (V)
Max Current
Rating (A)
Use below recommended device or its
equivalent
Module1, Module2
HO-2
60V
60A
IXYS: DSS2X101-02A
Module3, Module4
HO-5
180V
20A
ST: STPSC40065CW
Module5, Module6
Module7, Module8
HO-8
375V
8A
ST: STPSC40065CW
