Owner manual

Operator's Manual
Software Overview
Required Equipment
You will need this equipment to utilize the Power Analysis Software.
Oscilloscope
Power Analyzer Software option operates on any Teledyne LeCroy Windows-based oscilloscope. For ana-
lysis of phenomenon requiring the acquisition of many cycles, an oscilloscope with a minimum memory
of 1 Mpt per channel is recommended. Steady-state analysis can be accomplished with shorter record
lengths. Two acquisition channels are adequate for most measurements, but a four-channel oscilloscope
is recommended if you would like to analyze multiple devices or use complex triggering. To see the small
signal details hidden in large signals, such as a saturation voltage, or ripple transient analysis, a 12-bit
oscilloscope is recommended.
Probes
Voltage Probes. A wide range of voltage probes are available and are integrated within this software.
Proper section of the following probes should match circuit details, including: single-ended passive,
single-ended high voltage, differential high-voltage, active single and differential high-frequency, and 50
Ohm transmission line probe. Differential voltage probes will support your measurement environment
including isolating your circuits from line power, measuring currents with current sensing resisters, and
viewing switching transients in power supply ripple measurements.
Current Probes. The measurements described in Power Device Analysis require precision wide-band-
width current probes with DC measurement capability. We recommend Teledyne LeCroy:
l AP015 or CP030 DC-to-50 MHz, 30-ampere current probe
l CP031 DC-to-100 MHz, 30-ampere current probe
l CP150 and CP500 high-current probes
Other, higher current probes are also available from Teledyne LeCroy.
Teledyne LeCroy ProBus probes automatically use correct units and scaling for power measurements
when used with the Power Analyzer software. When other probes are used, the Power Analyzer Software
provides methods for entering the correct units and scaling.
When a channel is selected as the current input within the software, its units are automatically changed
to Amperes. When a differential probe is used to measure the voltage across a shunt resistor, the Power
Analyzer software will support the proper amps/div scaling when the resistor value is entered.
Differential Amplifier
Measuring high-side gate drive signals in an off-line application and capturing a device saturation voltage
to measure conduction loss or Rds(on) are challenging to do. These require a voltage probing solution
that has high CMRR, fast overdrive recovery, voltage clamping (so the oscilloscope is not overdriven),
compensation flatness, gain/ amplification to see small signal details, and precise offset generation to see
the switching device’s turn-off performance. The Teledyne LeCroy DA1855A and its associated DXC Series
Passive Differential Probes are required.
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