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Application
The 4800 Series Electronic Loads are designed for the testing
of DC/DC Point-of-Load Converters (e.g., Power Pod VRMs) used on the
latest generation of GHz processors. These loads emulate the specific
processor power load, particularly fast transient current changes.
NHR Model 430 DC/DC Converter Test System remotely controls up to
six 4800 Loads. It is an ideal solution for automated engineering
characterization or production testing of this new type of converter.
Tight Coupling
The 4800 Load is packaged in a compact 5" cube directly
coupled to the converter-under-test through a minimal inductance connector.
The Load must be specified with the appropriate connector to match
the target processor interface. Through this immediate coupling, slew
rates of up to 300 A/uS along with full current down to 0.5 V are
achieved, thereby simulating what the processors demand of the converters.
A separate Load would be required for each converter or converter
output.
Versatile Capability
In addition to the programmable slew rates, currents, voltages
and digital control, the 4800 Load accurately measures voltage, current
and power. For instance, the increasingly important efficiency measurement
can now be made to 0.01%. Setup and control is accomplished through
an intuitive instrument soft-panel on the S430 Test System PC. With
these features, the Load eclipses first-generation, manually controlled,
fast slew loads by assuring faster, more accurate and repeatable converter
performance measurements.
Flexible Test System Configuration And Control
Controlling the 4800 Load is the S430 Converter Test System,
a full capability ATE with a powerful Test Exexutive, network-ready
with an SPC analysis package. With this flexible test platform, a
variety of stimulus and load configurations are possible to address
everything from single unit engineering characterization to multiple
unit production testing.
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