Connect Tech Xtreme/PSU-UC User Manual
Revision 0.00
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External Module Charging
The Xtreme/PSU-UC includes an external connector that can be used to charge additional Ultracap
modules. In order to conform with many +16V rated modules, the removal of jumper J1 will set this
external Charge voltage to +15.5V. Depending on the properties of the module that you wish to use there
may be requirements for custom firmware to optimize charging for your target module. If you wish to
increase holdup with the use of an external ultracapacitor module please email [email protected]
and a custom board and/or custom firmware can be designed to exactly fit your needs.
Remote ON/OFF Functionality
The Xtreme/PSU-UC incorporates remote ON/OFF functionality, in order to necessitate remotely turning
the Xtreme PSU ON or OFF from a mechanical switch or digital I/O. It also supports supply shutoff and
start up in software via the USB or RS-232 serial interfaces.
+5V-Standby Functionality
The +5V-Standby power will continue to remain turned ON at all times whenever the input power is
present, this will be independent of the SHUTDOWN# pin
Turn Supply ON
When the SHUTDOWN# pin is left floating, unconnected or is driven externally to a voltage above +1.5V
(min) and +5V (max), the Xtreme/PSU-UC’ +5V, +3.3V, -12V and +12V rails will turn ON.
Connection Example A - Mechanical Switch Method
Connection Example B - External I/O Control Method
