PSD Switching Measurement with High Definition Oscilloscope
PSD*Switching Measurement with High Definition Oscilloscope
* Power Semiconductor Device
Issue:
The switching loss ("Power" in the example) is calculated by multiplying the output voltage(VDS) and current(Id) in the switching period (turn ON/turn OFF). The ON voltage is only a few volts for an output voltage of several hundred volts, but with a typical 8-bit oscilloscope, this is only 1 to 2 bits of AD resolution, and highly accurate measurements are not possible.
Solution:
The DLM5000HD with 12-bit ADC has 16 times the resolution of conventional 8-bit oscilloscopes, making it ideal for such wide dynamic range measurements. In addition, next-generation devices such as SiC/GaN have a high-speed rising switching voltage, which causes high-voltage ringing, and suppressing it is an important point in designing inverters. High Definition Oscilloscope is also effective for such ringing/noise observations.
Example: SiC MOSFET double pulse test waveform
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DLM5000HD Series High-Definition Oscilloscope
The DLM5000HD High-Definition Oscilloscope from Yokogawa Test&Measurement is the new standard of high-definition oscilloscope.
- Frequency Bandwidth: < 500 MHz
- Sample Rate: < 2.5 GS/s
- Vertical Axis Resolution: 12 bit
- High Resolution Mode: < 16 bit
- Measurement Memory: < 1 G points
- History Waveforms: < 200,000
- Simultaneous Multi-Channel Measurements: < 32 bit logic + 8 channels
- < 16 channels with two connected DLM5000HDs via DLMsync
- Highly-Responsive, Intuitive 12.1in Touchscreen
- with Traditional Oscilloscope Control Panel
- IEEE1588 Synchronous Support
- Superior Noise Immunity
- Vehicle Serial Bus
- Additional Math Channels
- Extensive Voltage Ranges
- Compact, Light, Portable
Mixed Signal Oscilloscopes
- Yokogawa mixed signal oscilloscopes
- Simultaneous, time correlated observations
- Analysis of analog with digital (logic) signals
- Troubleshooting electrical anomalies, measuring parametric values, monitoring signals
Oscilloscopes
- Digital oscilloscopes
- High-speed sampling
- Range of bandwidths for electronic device design and development
- Advantages of oscilloscope and multi-channel data recorder
