Medical Design Briefs - November 2022 - 26

Power Supplies
(means of patient protection) as well as
dual fusing ensure compatibility with all
relevant medical requirements (see Figure
3). Operation without the need for a
fan is possible due to the high levels of efficiency
(c93 percent). This enhances reliability,
giving an MTBF of >2,900,000
hours and a five-year warranty, it also eliminates
vibration and acoustic noise - both
highly desirable in medical applications. A
total of 12 different CoolMod modules are
available, giving huge flexibility to configure
sophisticated power schemes with
minimal design effort.
The modular nature of the solution,
and the flexibility of the individual modules,
can be a significant benefit during
the design process, if testing data indicates
that design tweaks are needed. For
example, if a voltage is toward the bottom
end of its specification, perhaps due
to a voltage drop in the cable, the voltage
on the module can be increased slightly
to compensate.
If the data shows that a module is close
to its power rating, then a more capable
module can be used (or two modules can
be configured in parallel) to ensure design
limits are not violated. Also, if a module is
shown to be underutilized, then replacing
this with a lower power module may enhance
overall system efficiency.
The modular approach allows the design
to be tweaked and honed with virtually
no effort and certainly no impact upon
the medical approvals which the CoolX®
carries in every configuration.
Fig. 3 - Advanced Energy's CoolX® offers PMBus capability
and modularity for medical applications. (Credit:
Advanced Energy)
Summary
MDB Nelson Labs Ad 0622_ADAM.qxp_1/2 Page Horizontal 5/18/22 5:49 PM Page 1
The market for medical devices is significant
and is back in growth mode
again. Unlike many markets where time
to market is simply a commercial consideration,
in the medical sphere it can
be, literally, life or death.
Increasing complexity of solutions as
well as the need for absolute reliability
and safety means that qualifying a
medical solution can often be complex
and time-consuming and therefore, expensive.
However, using the intelligence
built into subsystems (such as
the PMBus capability on intelligent
power solutions) can improve the
granularity and accuracy of test data
while releasing technician resources to
work elsewhere on the project.
Coupling this with a modular power
solution gives the ability to tweak the
design in response to test data with
minimal effort.
This article was written by Dermot
Flynn, Director, Strategic Marketing,
HV, LV - Advanced Energy, Denver, CO.
He can be reached at dermot.flynn@aei.
com. For more information, visit www.
advancedenergy.com.
26
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Medical Design Briefs, November 2022
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Medical Design Briefs - November 2022

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