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Buffer Modules Offer Extra 380ms Hold-Up Times

TDK has announced the introduction of the TDK-Lambda brand ZBM20 12V, 15V and 24V 20A rated open-frame buffer modules. The ZBM20 series provides an extended 380ms hold-up time to power supplies preventing data loss during brief power interruptions or allowing equipment to safely shutdown. Applications include industrial automation, robotics, test, communication and semiconductor fabrication equipment, says the company.

Energy is stored in electrolytic capacitors, replacing the need for batteries and their associated maintenance and servicing. A remote on/off function can be activated to avoid an unsafe discharge of stored energy. The charge and discharge status can be monitored locally or remotely via a DC OK relay, an LED indicator and photo-coupled signals. If a longer hold-up time is desired, modules can be connected in parallel. The 24V model has a switch that can be used to select either fixed or variable voltage buffer levels. In fixed mode, it will provide power when the input voltage drops to 22.4V, in variable mode when the input decreases by 1V.

Measuring 175mm x 85mm x 57mm (L x W x H), the units will operate without derating in ambient temperatures of -25°C to +70°C. The five-year warranty ZBM20 has protection against both input overvoltage and overcurrent conditions, has inrush current reduction and internal fusing. Safety certification includes IEC/UL/CSA/EN 62368-1 with CE marking to the Low Voltage, EMC and RoHS Directives. Main applications include industrial automation, robotics, test, communication and semiconductor fabrication equipment.

Main Features and Benefits:

  • Provides 380ms additional hold-up time at up to 448W
  • Utilizes electrolytic capacitors to store energy
  • Five year warranty
  • Parallel capable
  • Output remote on/off function

TDK-Lambda | www.us.lambda.tdk.com


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Buffer Modules Offer Extra 380ms Hold-Up Times

by Circuit Cellar Staff time to read: 1 min