Teledyne-lecroy Power Analyzer Package Manual de usuario descargar pdf (Pagina 17)

Operator's Manual

Device Safe Operating Area Test

This test measures that voltage, current, and power of an event all fall within safe operating levels as

defined by the device manufacturer. You can apply a mask to the power trace to help set your operating

limits or operating margin expectation for the device.

1. Select the source channels and identify the switching zone.

2. On the Power Analysis tab choose Analysis Type Device and Test Safe Operating Area.

The drain-to-source voltage waveform is displayed on the first grid, and the deskewed current wave-

form is displayed on the second grid.

On the XY plot in the third grid, voltage points are plotted on the x-axis, while current is plotted on

the y-axis. Therefore, the bottom left corner of the XY trace is the 0,0 point; the top of the trace is

maximum current; far right of the trace is maximum voltage. The most frequently occurring samples

are marked by a higher intensity display.

3. To apply a mask test to the power display:

l Check Mask Test.

l Enter the bounds for the mask by entering the device limits defined by the manufacturer or

your desired test limits. The value represented by each grid division appears on the channel

trace descriptor boxes.

A circular red marker appears around each data point that exceeds the mask limits.

4. Optionally, select Statistics to display mean, minimum and maximum values on the measurements

table. This helps to observe a consistent number.

5. Optionally, select Histicons to display a miniature histogram of the statistical measurements.

921326 Rev B

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Teledyne-lecroy Power Analyzer Package Manual de usuario Pagina 17