The Analysis Tech Power Cycler provides long term, automatic, unattended power-cycle aging of high power semiconductor devices such as power MOSFET and IGBT modules. During cyclic aging, transient thermal evaluations are automatically performed to periodically monitor the thermal-degradation of the devices under test. The Power Cycler is used in conjunction with the Phase 12 Semiconductor Thermal Analyzer offering the full compliment of device thermal tests and characterization from transient to steady state. In addition, the Power Cycler uniquely provides lifespan/reliability testing on multiple devices simultaneously during cyclic thermal aging processes. Power cycling can also be performed on any Phase 12 Thermal Analyzer on single devices without the use of the specialized hardware contained in the Power Cycler.
The Analysis Tech Power Cycler offers the thermal heat-sinking capacity equivalent to two or four Rjc Liquid Universal XY fixture stations. Each of these cold plates has a cooling capacity of 2400 watts and includes a pair of mechanical clamping yokes with a total of 4-8 device clamping points for securely attaching a wide variety of device package styles to the liquid-cooled cold plates. Each heat sink has an external Tc port for performing JEDEC 51-14 Rjc measurements. One heat sink also is equipped with a spring-loaded thermocouple sensor for device case temperature measurement for the traditional Mil Std 883 Method 1012 Rjc determination. (Note: The chillers required for these heat sinks are not included with the Power Cycler.)
Connections to the device-under-test ("DUT") use convenient high-current quick-connectors provided as pre-made pigtails. Kelvin and gate control connections use simple and convenient screw terminal connectors . This image shows the connection of two DUTs using the wire harnesses provided.
Each Power Cycler port has a power capacity of to 1000 watts depending on the power supply selected. Each device-under-test can be powered by 1 or 2 ports for a maximum 1200 or 2400 watts per device. Two configurations of Power Cycler are available: the 4-Port Cycler with two heat sink plates and the 8-Port Cycler with four heat sink plates.
WinTherm software provides the user with wide ranging selections for power-cycling test parameters: Depending on the option selected, power cycle wave forms can range from steady state to 50 hertz (10 msec power-ON, 10 msec power-OFF minimums) over 10-100% duty cycle selection. Other selections include "end-of-life" thermal-criterion, thermal evaluation intervals, and test duration limit for automatic test termination. All data records are tagged with the user-provided device-identifications. Long term tests can be easily stopped and restarted with no discontinuity in the data record. Once a test is stopped, aging or failed devices can be easily replaced with fresh devices and test restarted with complete integrity of the device-aging data record. During Power Cycle testing, complete test data is button-available in tabular and graphical formats.
WinTherm, the Phase 12 Thermal Analyzer operating software, offers a suite of effective procedures for designing and implementing power cycling tests both with single device test fixtures or with the Power Cycler. The integration of these features is detailed in Power Cycling Methods.
During power cycle testing, all devices are continuously monitored with a short duration transient thermal test intended to detect device degradation due to the applied thermal cycling. In addition, a number of device failure conditions can also be detected, such as a "shorted" or "open" condition on any test device. Devices, which have failed for any reason, are flagged and excluded from the continuation of the long term cyclic power aging test. In addition to the automatic transient evaluation at the end of every test cycle, a more comprehensive Structure Function Analysis test can also be performed. These Structure Function tests can be performed when a predetermined amount of device degradation has been detected, at preset cycle intervals, or "on demand", whenever the operator may decide a test is desired.
Port Power Max
Specifications for all models:
|Dimensions||44" x 16" x 12" (1.1 x 0.3 x 0.4 m)|
|AC Supply Power Cycler||120/230VAC, 60Hz, 3 A 230/3-Ø 20A or 440/3-Ø 15A|
|Chiller Flow (see note 2)||35 psi @ 1.6 gpm(6 lpm), 45 psi @ 2.3 gpm(8.6 lpm); quick-connect incl.|
|Cycle Duration Minimums||Standard ('-Std'): 1 sec On, 1 sec Off
Option ('-HS'): 10ms On / 10ms Off
|Test Cables Included||One hi-side/lo-side pair per port with 6mm stud lugs; power cycle control cables|
|Ship Weight||275 lbs (125 kg)|
1) Power Cycler weight without DC heating power supply
2) Cooling capacity must be sized to intended heating load, chillers not included with Power Cycler
Systems include: calibration report, complete instruction manuals, 1 year warranty.
Order the Power Cycler Model number as shown above with the desired cycle duration option (either '-Std" or '-HS') be appended to the model number. Allow 8-10 weeks for delivery. FOB Wakefield. Custom orders welcome.