Evaluation Engineering - 26

POWER SOURCES
In the test of products ranging from communications ICs to
automotive drivetrain and battery systems, power sources-from
benchtop units to floorstanding cabinets-are critical tools. The
global power supply market, valued at $24.31 billion in 2017,
is expected to swell to $39.46 billion by 2025, according to a
December 2019 report by Verified Market Research.

4U, 30-kW rack-mount
programmable DC load
Elektro-Automatik has announced the
EA-ELR 10000 30-kW programmable
electronic load, which incorporates SiC
power conversion devices. It combines
its high-efficiency programmable DC
load with an equally efficient inverter (regenerative) output stage, returning up to 95%
of the energy used in the test back to the AC grid. A master-slave bus provides for
parallel connection of multiple units to a maximum input power rating of 1,080 kW. The
ELR 10000 provides a range of programmable functions to simulate complex testing
such as electric vehicle traction motors, battery discharge testing, PV simulation per EN
50530, and MPP tracking. An FPGA-based function generator with a value table of up
to 3,276 points enables creation and operation of load profiles that include sine wave,
square wave, sawtooth, and ramp functions. The supply features DC simulated load
input voltage ratings of 60 V to 2,000 V and current ratings from 40 A to 1,000 A. DC
inputs and AC power (342 to 528 V, 3-phase, 50/60 Hz) are galvanically isolated, as are
the built-in USB, Ethernet and analog control interfaces. Elektro Automatik

Compact 4-channel 210-W power
supplies
Saelig Company Inc.'s AIM-TTi MX100Q
Series power supplies are versatile 4-output
laboratory power sources that use mixedmode regulation to provide up to 210 W
of power, shared by up to four outputs, in
one compact case. Mixed-mode regulation
combines switch-mode architecture
with linear final stage regulation to give
performance characteristics resembling a
totally linear design but at reduced weight.
Each output can provide 0 to 35 V at 0 to 3 A,
with output combination abilities that extend
output voltages up to 70 V and currents up
to 6 A. The MX100Q Series provides fine
precision output adjustment with a resolution
of 1 mV and 0.1 mA. All relevant information is
displayed on a large backlit graphic LCD, with
control via soft keys, a numeric keypad, and a
spin wheel. More than 50 output combinations
are available. Features include 50 memorized
settings for each output plus 50 further
settings for all four outputs together. Multi-on
and multi-off keys supplement the individual
output on/off keys. Saelig Company

2,200-W power supply
Bel Power Solutions has announced the PES2200 Series 2,200-W high-density power supplies
with full digital control. Variants for AC- and DC-input enable server, storage, and telecom OEMs
to standardize on a power-entry module across their product range. PES2200 Series power supplies
provide a main output of 12 VDC for powering intermediate bus architectures (IBA) in datacenter and
telecom central office equipment. The convergence of IT and telecom infrastructures means that computing
servers, storage appliances, routers, and networking switches may be installed in data centers with AC input
power or -48 VDC telecom environments. Manufacturers of computing, network, and storage equipment can use the
PES2200 Series to simplify the integration and servicing of their servers and appliances. Measuring 80 mm x 40 mm x 195
mm, the PES2200 Series has a power density of 59 W/in.3 and provides a 12-V output plus an always-on 12-V standby output
at 3.5 A. Digital control, programming, and monitoring using the Power Management Bus protocol improves the ability of OEMs to control the
power supply while increasing reliability and efficiency over a wide operating range.

Bel Power Solutions
26

EVALUATION ENGINEERING FEBRUARY 2020

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