Evaulation_Engineering_March_2020 - 21

Herdin emphasized EMI. "There are
many challenges, but meeting EMI compliance has become a key challenge for
designing wide-bandgap semiconductor converters as switching times and
therefore unwanted emissions increase,"
he said. "Debugging designs early in the
design phase has become increasingly
important. Oscilloscopes that can assist
in EMI debugging are very relevant."2
When asked about features, Herdin
said customers value the 16-bit HD mode
of the company's R&S RTE, R&S RTO, and
R&S RTP oscilloscopes as well as advanced analysis capabilities like flexible
math mode and PWM track functionality.
The oscilloscopes plus an EMI receiver
and 4-line LISN for conducted EMI tests
will be on display at APEC. Topics Rohde
& Schwarz experts will discuss at the
event include EMI debugging and compliance, control-loop analysis (Bode plot),

and general-purpose power-electronics
test with oscilloscopes.

Interconnect
Samtec positions its new mPOWER ultramicro power connectors as suitable
for high-current delivery in several applications. The company currently offers
board-to-board solutions and has cableto-board options under development,
according to Terry Emerson, product
marketing manager. Samtec's mPOWER
UMPT/UMPS Series connectors come
with several options, he said, including
number of blades (two to five), a number
of stack heights (5, 7, 10, and 12 mm), tin
or gold plating, and optional weld tabs for
added ruggedness.
mPOWER products find use in applications such as mobile-device charging, motor control, automotive, industrial, green
energy, and grid control. "Since mPOWER

can be used with a wide variety of signal
connectors or as a standalone unit, it has
found a home in applications from industrial to medical," Emerson said.
When asked about industry trends,
he said, "System form factors are getting
denser. Engineers want to cram as much
power delivery into as small space as possible." He added that mPOWER can carry
up to 21 A per blade in a small form factor.
"For connectors, it really comes down
to size vs. efficiency of power delivery,"
Emerson said. "Customers want to dedicate as little PCB space to power delivery as possible while being confident
that their application won't have issues.
mPOWER checks all of those boxes."
REFERENCES

1. GaN HEMT Dynamic Rds(on) Test, White Paper,
Focused Test, 2017.
2. "EMI debugging of embedded power electronics
designs," Solution Page, Rohde & Schwarz.

MARCH 2020 EVALUATIONENGINEERING.COM

http://www.EVALUATIONENGINEERING.COM

Evaulation_Engineering_March_2020

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