Archive for October, 2011

Product Focus: 63472 High Slew Rate DC Electronic Load

High Slew Rate DC Electronic Load

  • Designed for VRM’s, embedded VRD’s and Power Pod testing
  • Static Loading – Power rating: 200W / Voltage range: 0-2V / Current range: 150A
  • Dynamic Loading – Current range: 150A
  • Slew rate: Up to 1000A/µs
  • Dynamic Freq: Up to 1MHz

As a result of the exploding increase in CPU complexity according to Moore’s Law, all modern processors require a low voltage with high instantaneous current power source. Voltage Regulator Modules, along with embedded solutions, are the only way to correctly supply these currents. A need to simulate this low voltage, high current with fast di/dt loading has become more important than ever. Every main board design using a VRM, Intel ItaniumTM power pod or an embedded regulator (VRD) will need processor voltage supply performance qualification.

Integrating Intel’s latest high di/dt test technology with years of experience in the design and manufacture of highly accurate, precision DC load and measurement instrumentation, the Chroma 63472 electronic load is your total solution for qualifying all main board Intel® processor power performance requirements.

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Product Focus: 63800 Series Programmable AC Electronic Load

Programmable AC Electronic LoadThe Chroma 63800 AC Loads can simulate load conditions under high crest factor and varying power factors with real time compensation even when the voltage waveform is distorted. This special feature provides real world simulation capability and prevents overstressing resulting in reliable and unbiased test results.

The 63800 AC Load’s state of the art design uses DSP technology to simulate non-linear rectified loads with its unique RLC operation mode. This mode improves stability by detecting the impedance of the UUT and dynamically adjusting the load’s control bandwidth to ensure system stability.

Comprehensive measurements allow users to monitor the output performance of the UUT. Additionally, voltage & current signals can be routed to an oscilloscope through analog outputs. The instrument’s GPIB/RS232 interface options provide remote control & monitor for system integration. Built-in digital outputs may also be used to control external relays for short circuit (crowbar) testing.

Product Focus: 63200 Series High Power DC Electronic Load

High Power DC Electronic Load

  • Power Rating: 2600W, 5200W, 6500W, 10400W, 14500W, 15600W
  • Voltage range : 0 ~ 80V / 0 ~ 500V
  • Current range : Up to 1000A
  • CC, CR, CV, CP load modes
  • Master/Slave paralleling control mode, allow synchronous load control under static and dynamic loading mode (Up to 93.6kW)

The Chroma 63200 series Electronic DC Loads are designed to test DC Power Supply, power electronic devices, automative battery and components testing. The high power ratings, parallel and synchronization capabilities make them the ideal tool for testing high power UUT’s such as SMR’s, UPS’s, batteries, and fuel cells.

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Battery Charge/Discharge Test Software

Battery Charge/Discharge Testing SoftwareChroma has developed two software modules that integrate a DC power supply and an electronic load for battery pack testing. The Battery Charge/Discharge Testing Software programs the test sequence, loop and stop conditions. The measured voltage, current and power data is recorded in a file for future analysis. The Dynamic Current Waveform Simulation Software records to an Excel compatible file actual discharge current waveforms from the battery and instruct the electronic load to sink the same current. This is used to simulate real world applications and evaluate the battery pack in the lab.

Battery Charge/Discharge Test Solutions

DC LoadsSatisfy your Battery Test Requirements such as charge rate, discharge rate, state of charge (SOC), and state of health (SOH), and depth of discharge (DoD) with accuracy in measuring voltage, current, temperature and power both statically and dynamically.

DC Impedance Measurement For Battery Cell

The battery pack for electric vehicles requires the battery cells be paralleled for large current use. An important parameter is the impedance consistency of the battery cell since battery life may be affected if the impedance is not consistent. The DC impedance test solution offered by Chroma sets the discharge current change (ΔI) and measures the voltage change (ΔV), and then calculates the battery’s internal resistance using ΔV/ΔI as shown in the figure below.