How to Perform Accurate DC-to-DC Converters Testing

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Regenerative ATE System Power Supply
+ Regenerative ATE System Power Supply
Regenerative ATE System Power Supply
+ Regenerative ATE System Power Supply

Accurate DC-to-DC Converters Testing with Regenerative Power

Critical metrics for DC-to-DC converters testing require accurate measurement of efficiency, load and line regulation, power supply rejection ratio, transient response, ripple, and turn-on time. Performing efficiency testing under varying load conditions typically requires multiple test instruments, including a DC power source, an electronic load, and precision voltage and current measurement capability. Ideally, the power source and electronic load are synchronized to ensure accurate power measurements during dynamic load changes.

Characterizing the DC parameters of the DC-to-DC converter testing requires connecting the device between a DC power source and an electronic load to sink the converter’s output current. The power source provides a constant input voltage while the electronic load varies the load current across the operating range. Voltage and current are measured simultaneously at the input and output of the converter to determine input power and output power, enabling accurate efficiency calculation under constant voltage and varying load current while simplifying test setup and supporting repeatable results in automated test environments.

Accuracy DC-to-DC Converters Testing Solution

Accurate DC-to-DC converters testing requires a programmable DC power supply and an electronic load with synchronized voltage and current measurement to evaluate key parameters such as efficiency, load and line regulation, and power supply rejection ratio, while an InfiniiVision 3000G X‑Series oscilloscope is used to measure AC characteristics including ripple, start-up behavior, and transient response. A Keysight RP5900 Series Regenerative DC Power Supply provides a stable input voltage to the converter, and a Keysight EL4900 Series Regenerative Electronic Load sinks the output current while sweeping load conditions, with both instruments measuring voltage and current simultaneously for accurate power calculations. PathWave Advanced Power Control and Analysis software coordinates instrument control, automates data logging, and performs analysis, enabling efficient, repeatable, and accurate characterization of DC-to-DC converters across a wide range of operating conditions.
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