POWER SUPPLY TEST SYSTEMS

CONVERTER/ADAPTER POWER SUPPLY TESTER

• A full-capability, automatic DC power supply test system in an instrument chassis
• Configurable with DC electronic loads, programmable DC power supplies plus an AC power source
• Waveform digitizer measurements

APPLICATION

The S400 Power Supply Tester is a PC-controlled, full-capability system intended for high-speed functional testing of low-power products such as DC-DC converters, VRMs, AC-DC supplies, adapters and chargers. All the measurement, control and test executive capability found in upright-cabinet-sized automatic power supply test equipment are contained within the instrument-sized S400. The power supply tester is configurable with upper power limits in the range of 600 W and 4 to 6 outputs. Within these limits, it is an ideal solution for power supply manufacturers that require comprehensive test capability and enterprise network compatibility, together with the absolute minimum unit-cost-of-test.

A COMPLETE POWER TEST SOLUTION

The power supply tester is available in two models: the S430 for DC-DC converter test and the S440 for AC-DC power supply test. All stimulus and measurement instrumentation, along with a multiplexer, digital stimulus, comparators, timers and relays are contained within a single chassis. The entire test capability and software features found on the most advanced full-sized power supply ATE are included. The user needs only to create a test program and add fixturing in order to start testing.

CONFIGURABLE WITH INTERCHANGEABLE POWER MODULES

A key to flexibility, as well as compact design, is the Modular Power System that has been a fundamental component of larger NH Research power test systems for many years. This is the portion of all testers where flexibility is most often required. What makes this system unique is that the 6-slot chassis will accept any combination of DC electronic loads and/or programmable DC power supply modules, as shown on the accompanying chart. Additional flexibility is achieved through the ability to synchronously parallel modules from within a test program to match each supply-under-test's specific stimulus requirements. In this manner, it is possible to configure a wide range of virtual loads and sources within the chassis power limits. All modules also have wide operating ranges and constant power operating envelopes to allow covering a maximum range of requirements with a minimum group of modules.

EMBEDDED DIGITIZING MEASUREMENT SYSTEM

An advanced measurement system is contained within the chassis. The measurement system digitizes analog signals for DSP analysis, allowing the extraction of both static and transient measurements from a single waveform capture. In this manner, one circuit replaces the essential functions of a Voltmeter, Timing/Noise Analyzer, Power Analyzer and Oscilloscope, along with associated signal matrixing and interconnect wiring. Beyond the capability, size and cost advantages, the system's architectural simplicity yields much faster test times and improved tester reliability.