PMA2
Power Device Analysis
Analyze power device performance while the device
is operating in circuit, without requiring specially designed test fixtures or clipping circuits. Only
LeCroy can provide the full range of measurement capability, including capture windows in the
100s of milliseconds at high sample rates for finding unusual violations during safe operating
area measurements.
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Safe
Operating Area |
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PMA2 gives you completely new knowledge about your circuit.
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 PMA2 on X-Stream DSOs, SOA display on very long records with high resolution is possible and improper
device characteristics can be identified.
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CLICK
ON IMAGE TO ZOOM
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Power Losses |
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Instantaneous Power Loss and Total Losses per Switching
Cycle of the power switching device are all easily measured over a single cycle or multiple cycles. Display the power
waveform and zoom on it for detail. Use gated measurements to look at losses during a small portion of the waveform—
measurements such as Turn-Off Loss, or Measure Conduction Loss and Dynamic-On Resistance during the conduction portion of the switching cycle.
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CLICK
ON IMAGE TO ZOOM
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Voltage |
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Accurately measure and view
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Small voltage signals riding on top of large positive to
negative bus voltage transitions during High-Side Gate
Drive measurements
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Saturation voltages of a small fraction of a volt when there
are large dynamic range transitions of an in-circuit device
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Instantaneous
voltage change (dv/dt).
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CLICK
ON IMAGE TO ZOOM |
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(Note:
LeCroy’s DA1855A Differential Amplifier and DXC100A Voltage
Probes provide the high CMRR and fast overdrive recovery
necessary for some of these measurements) |
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