TDK extends power supplies’ hold-up time to avoid data loss

Open frame buffer modules from TDK-Lambda can provide 380 milliseconds of additional hold-up time for 12, 15 and 24V AC/DC power supplies. The ZBM20 buffer modules’ extended hold-up time allows equipment to safely shutdown and avoid data loss in industrial automation, robotics and semiconductor fabrication equipment.

To avoid unsafe discharge of stored energy, the remote on/off function can be used to inhibit the output. For remote monitoring, a DC OK relay and photo-coupled signals indicate the modules’ readiness. Multiple modules can be paralleled for longer buffer times.

The hold-up energy is stored in electrolytic capacitors rather than batteries. This removes the need for servicing and maintenance, advises TDK-Lambda. On the 24V output model, a switch can 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 1.0V.

The ZBM20 modules measure 175 x 85 x 57mm and will operate in ambient temperatures of -25C to +70 degrees C.

In addition to a five-year warranty, the ZBM20 has protection against both input over-voltage and over-current conditions. Inrush current reduction and internal fuses are also provided.

Safety certification includes IEC/UL/CSA/EN 62368-1 with CE marking to the Low Voltage, EMC and RoHS directives.

TDK was established in 1935 to commercialise ferrite, a key material in electronic and magnetic products. TDK’s portfolio features passive components such as ceramic, aluminium electrolytic and film capacitors, as well as magnetics, high-frequency, and piezo and protection devices. It also includes sensors and sensor systems such as temperature and pressure, magnetic, and MEMS sensors, power supplies and energy devices and magnetic heads. These products are marketed under the product brands TDK, Epcos, InvenSense, Micronas, Tronics and TDK-Lambda. TDK focuses on demanding markets in automotive, industrial and consumer electronics, and information and communication technology. The company has a network of design and manufacturing locations and sales offices in Asia, Europe, and in North and South America.

TDK-Lambda specialises in power conversion products for industrial and medical equipment worldwide.

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