Over the past few years here on “Watt’s Up?” I have
posted several articles and application pieces on performing battery drain
analysis for optimizing run time on mobile wireless devices. The key product we
provide for this application space is the N6781A 20V, +/-3A, 20W source measure
module for battery drain analysis. A second related product we offer is the
N6782A 20V, +/-3A, 20W source measure module for functional test. The N6782A
has a few less key features used for battery drain analysis but is otherwise
the same as the N6781A. As a result the N6782A is preferred product for testing
many of the components used in mobile devices, where the extra battery drain
analysis features are not needed. These products are pictured in Figure 1.
While at first glance they may appear the same, one thing to note is the N6781A
has an extra connector which is independent voltmeter input. This is used for
performing a battery run-down test, one of a number of aspects of performing
battery drain analysis. Details on these two SMUs can be found on by clicking
on: N6781A product page. N6782A product page,
Figure 1: Keysight N6781A SMU for battery drain analysis
and N6782A for functional test
These products have greatly helped customers through their
combination of very high performance specialized sourcing and measurement
capabilities tailored for addressing the unique test challenges posed by mobile
wireless devices and their components. However, things have continued to evolve
(don’t they always!). Today’s mobile devices, like smart phones, tablets and
phablets, have an amazing amount of capabilities to address all kinds of
applications. However, their power consumption has grown considerably as a
result. They are now utilizing much larger batteries to support this greater
power consumption in order to maintain reasonably acceptable battery run-time.
Optimizing battery life continues to be a critical need when developing these
products. With their higher power however, there is in turn a greater need for
higher power SMUs to power them during test and development. In response we
have just added two new higher power SMUs to this family; the N6785A 20V,
+/-8A, 80W source measure module for battery drain analysis and the N6785A 20V,
+/-8A, 80W source measure module for functional test. These products are
pictured in Figure 2. Details on these two new higher power SMUs can be found
on by clicking on: N6785A product page. N6786A product page.
Figure 2: Keysight N6785A SMU for battery drain analysis
and N6786A for functional test
A press release went out about these two new SMUs yesterday;
Click here to view. With their greater current and power capability, customers
developing and producing these advanced mobile wireless devices and their
components now have a way to test them to their fullest, not being encumbered
by power limitations of lower power SMUs.
This is exciting to me having been working within the
industry for quite some time now, helping customers increase battery life by
improving how their devices make more efficient use of the battery’s energy. A
key part of this has been by using our existing solutions for battery drain
analysis to provide critical insights on how their devices are making use of
the battery’s energy. There is a lot of innovation
in the industry to make mobile wireless devices operate with even greater
efficiency at these higher power and current levels. There is no other choice
if they are going to be successful. Likewise, it is great to see continuing to
play a key role in this trend in making it a success!
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