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Published byHilary Garrett Modified over 9 years ago
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Power Analyzer Option rich@testrack.com
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History of Power Analysis Software Strong history of power analysis going back to late 1990’s Software evolved over time and transitioned to current version in 2003 DA1855A and variety of current probes simplified power probing 12-bit HDO is the right oscilloscope for taking power measurements to the next level
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Power Analysis Software Option Measure and analyze operating characteristics of power conversion devices and circuits Automatic detection and measuring of turn-on, turn-off and conduction losses Identify areas of power loss with color coded waveform overlay Streamlined user interface to guide user through various stages of analysis Operating modes for: Power switching device measurements Control loop modulation analysis Line power harmonics
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Streamlined User Interface New power specific user interface walks user through proper setup Select inputs and configure with Input Settings tab Choose analysis type, desired test and measurements to be displayed Shortcuts for statistics and histicons available All measurements have appropriate power related names for simplicity Switching Losses, Conduction Loss, Offstate Loss Choose method of calculating conduction loss depending on probe setup
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Device Measurement – Power Losses Areas of power loss are automatically detected, measured and annotated across many cycles Color coded overlay highlights all areas of power losses on both power and voltage traces Measurements are automatically calculated and displayed with proper power terminology No manual gating of switching losses required
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Device Measurement - Conduction Loss Calculation User selectable choice of how to display conduction losses Measure with differential amplifier and probe or calculated based on component specifications Unique feature enabling simple and accurate conduction loss measurement
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Device Measurement – Removing Probing Errors Dedicated interface for proper probe setup and configuration Controls to adjust Fine DC offset and eliminate skew between channels Shortcuts to channel menus for probe Autozero and Degauss
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Device Measurement – Safe Operating Area (SOA) Easily display SOA for comparison to component specs Use persistence to monitor SOA during critical events like power supply startup, transient load and transient line changes Power loss annotator identifies losses on all cycles in long captures Loss measurements calculated across all cycles with statistics
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Control Loop - Modulation Analysis Evaluate loop dynamics of switched mode power device Plot variation in time of pulse width, duty cycle, period or frequency Leverages long memory of the HDO to capture control loop performance during startup
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Line Power – Harmonics Testing Investigate line power harmonics for pre-compliance to standards like EN61000-3-2 View voltage, frequency and line harmonics simultaneously Mask testing reports when harmonics are outside the allowed range Table in the dialog box reports back results and harmonic details rich@testrack.com
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