New Industry Products

Measure and Analyze Operating Characteristics of Power Conversion Circuits

October 28, 2019 by Paul Shepard

Critical power switching device measurements, control loop modulation analysis, and line power harmonic testing are all simplified with the Power Analyzer software package from Teledyne LeCroy. It comes with a dedicated user interface and automatic measurements.

Power Analyzer provides quick and easy setup of voltage and current inputs and makes measurements as simple as the push of a button. Tools are provided to help reduce sources of measurement errors, measurement parameters provide details of single cycle or average value over multiple cycles.

Key Features:

  • Automatic switching device measurements
  • Color coded overlay to identify power losses
  • Control loop and time domain response analysis
  • Line power and harmonics tests to IEC 61000-3-2
  • Setup tools reduce sources of measurement error
  • Total harmonic distortion table shows frequency contribution
  • B-H Curve shows magnetic device saturation

Automatic Switching Device Measurements

Areas of power device turn-on and turnoff transitions, and conduction are all identified with color-coded waveform overlays. Measurement parameter table automatically calculates each element of device losses and sums their total.

Control Loop Response Analysis

Modulation analysis capabilities provide insight to understand control loop response to critical events such as a power supply's soft start performance or step response to line and load changes.

Line Power and Harmonics Testing

Line power analysis tools provide insight to power consumption as well as enables quick precompliance testing to EN 61000-3-2. Decisions on power quality are aided with total harmonic distortion and analysis of contributions to distortion.

Support on Multiple Oscilloscope Platforms

The Power Analyzer Package is available on a wide range of oscilloscope models from 200 MHz to 65 GHz.

Power Device Losses

Turn-on, turn-off and conduction zones are identified with a color-coded overlay, power losses in these zones are automatically measured and displayed. Losses associated with the switching, conduction, and off-state are measured independently and displayed along with the sum of selected loss types.

Safe Operating Area

Gain insight to circuit performance by seeing SOA plots to look for violations in the first cycles after an event or over long time periods. Finding SOA violations that occur for only a few cycles after an event, such as short circuit or startup, can be problematic.

These violations often go undetected, and degrade the device over time.  Using the long record length and fast processing of Power Analyzer, SOA display on very long records, confirm turn-off voltage and current limits are not exceeded.

B-H Hysteresis Curve

View the behavior of a magnetic device while it operates in circuit. Dynamic circuit changes show resulting magnetic saturation and operating region.