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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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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
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
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
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
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
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
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
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
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
