PMBus communications interface option card for modular power supplies introduced by TDK Lambda

SAN DIEGO – TDK-Lambda Americas Inc. in San Diego is introducing a Power Management Bus (PMBus) communications interface option card for the company's 700-to-1500-Watt QM series of modular power supplies.

PMBus is an open-standard digital power management protocol that enables power devices to communicate with each other. The QM power supplies are available with as many as 16 outputs, have full medical means of patient protection (MOPP) isolation and low acoustic noise.

The addition of PMBus enables the user or system to turn the QM power supplies on and off remotely (inhibit or enable mode), read back their incoming air temperatures, total operating hours, fan speed, fan status, and manufacturing details.

Users can connect as many as eight QM power supplies to one controller. Included on the option card is a 5-volt 2-amp standby output (always on) and a Fan Fail signal output.

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If the fan slows because of bearing wear, or runs quickly because the inlet air is restricted, the signal and interface bus will call for preventative maintenance.

Users can select the communications option when using the TDK-Lambda Product Quick Finder configuration Web-based tool that enables users to enter their desired output voltages and currents, select options, and receive an eight-digit code for quoting and ordering. The program will select the optimum product and configuration automatically.

For more information contact TDK-Lambda Americas online at www.us.tdk-lambda.com/lp/products/qm-series.htm.

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