19
Note:
CmG-H module outputs should not be paralleled.
Since all Coolmod signals are isolated from the Coolmod outputs, when CoolMods are
connected in series or parallel, all CoolMod analog control functions (Vtrim, Itrim,
Enable/Inhibit) can be implemented by paralleling the appropriate signal pins of each
CoolMod and providing a single control signal, i.e. connect all the Vtrim pins together and
control Vtrim using a single control voltage. This can also be implemented using the PMBus
TM
interface.
CoolMod Start-Up and Shutdown
CoolMods are designed so that when input power is applied, all outputs rise to their set point
voltage simultaneously. Likewise, when input power is removed all outputs commence to turn
off simultaneously. Outputs can be sequenced using the enable function in order to allow
controlled start up if required.
Turn-On Delays are as follows
From AC
1000ms max
From Global Enable (CONTROL)
15ms max
From CoolMod Enable
15ms max
Power Good output signals from each module can be used to drive CoolMod Enable signals
for sequenced outputs.
Summary of Contents for CoolX1800
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