Power Analysis Application Module DPO4PWR·MDO3PWR Datasheet Applications Power loss measurement at switching device Characterization of power semiconductor devices Optimal drive characterization of synchronous rectifiers Measurement and analysis of ripple and noise Precompliance testing to IEC standard EN61000 3-2 Class A, MIL Standard 1399 Section 300A, and up to 400 harmonics Debugging active power factor correction circuits Additional power analysis solutions are available. Please go to www.tek.com/power for more solutions. DPO4PWR·MDO3PWR With a Power Analysis Application Module installed on an oscilloscope, an embedded designer who rarely deals with power measurements can quickly get the same accurate, repeatable results as a power supply expert. Key performance specifications Power Loss measurements at the switching device for improving switching power supply efficiency Automated Ripple measurement setup eliminates manual processes Automated THD, True Power, Apparent Power, Power Factor, and Crest Factor features eliminate tedious manual calculations Key features Customizable safe operating area mask testing with linear and log scale for reliability testing With the DPO4PWR Power Analysis Application Module installed on an MDO4000 Series oscilloscope, or an MDO3PWR Power Analysis Application Module installed on an MDO3000 Series oscilloscope, an embedded designer who rarely deals with power measurements can quickly get the same accurate, repeatable results as a power supply expert. A Power Analysis Application Module with an oscilloscope and differential voltage and current probes form a complete measurement system for power supply design and test. The Power Analysis application provides a number of specific measurements to characterize power supplies: Switching Component Analysis, Input Analysis, and Output Analysis. Switching component analysis The accurate calculation and evaluation of energy loss in power supplies has become even more critical with the drive to higher power conversion efficiency and greater reliability. Precompliance testing to the EN61000-3-2 Class A and MIL Standard 1399 Section 300A Standards reduces compliance test time and risk Modulation analysis quickly provides accurate active power factor characterization Deskew wizard ensures accurate, time-correlated results Correct scale factor and unit display while using third-party current probes eliminates manual calculations and human error

Switching loss measurements Although almost all components of a power supply contribute to energy losses, the majority of energy losses in a switch-mode power supply (SMPS) occur when the switching transistor transitions from an OFF to an ON state (turn-on loss) and vice versa (turn-off loss). By measuring the voltage drop across the switching device and the current flowing through the switching device, the Power Analysis application measures the switching losses as shown in the following figure. Switching loss measurements Safe operating area The Safe Operating Area (SOA) plot is a graphical...

Power Analysis Application Module -- DPO4PWR · MDO3PWR Current harmonics Because a switching power supply presents a nonlinear load to the power line, the input voltage and current waveforms are not identical. Current is drawn for some portion of the input cycle, causing the generation of harmonics on the input current waveform. Excessive harmonic energy can affect the operation of other equipment connected to the power line, as well as increase the cost of delivering the electric power. Therefore, power supply designers can use the current harmonics measurements to assure precompliance of their...

Specifications All specifications apply to all models unless noted otherwise. Instrument compatibility Recommended Oscilloscopes DPO4PWR Measurements Power quality measurements VRMS, VCrest Factor, Frequency, IRMS, ICrest Factor, True Power, Apparent Power, Reactive Power, Power Factor, Phase Angle Switching loss measurements Power loss TOn, TOff, Conduction, Total Energy loss TOn, TOff, Conduction, Total THD-F, THD-R, RMS measurements up to 400 harmonics Graphical and table displays of harmonics Test to IEC61000-3-2 Class A and MIL-STD-1399 Section 300 A Ripple measurements Modulation analysis...

Power Analysis Application Module -- DPO4PWR · MDO3PWR Deskew Recommended deskew values automatically calculated based on propagation delay. Deskews can be set to recommended values or adjusted manually. Tektronix Deskew Pulse Generator and Deskew fixture Nominal propagation delay value automatically loaded Built-in probe model list Nominal propagation delay value provided when probe is selected Propagation delay can be manually entered Ordering information DPO4PWR·MDO3PWR Power Analysis Application modules MDO4000 Series Deskew fixture Deskew pulse generator Tektronix oscilloscopes and probes...

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