Ericsson has introduced a new type of DC-DC converter module based on hybrid regulation ratio (HRR) technology, namely the innovative PKM4817LNH. This module is optimized for parallel operation and can power the 2200W board in applications that require extreme data in the data communications industry.
Each unit provides 800W of power, and up to three PKM4817LNH modules can be connected in parallel to achieve a total deliverable power of 2200W. Parallel mode uses falling load sharing, which means that the output voltage has a typical falling characteristic, so that as the load increases, the output voltage will drop slightly while staying within the system voltage limit.
Ericsson's advanced HRR topology combines two power control methods-voltage regulation and ratio regulation-and guarantees high performance in the 45V to 60V input voltage range commonly used in data communication systems powered by front-end rectifiers. HRR technology provides excellent response to line and load transients, and "guarantees" that the output voltage will remain stable and independent of voltage deviations caused by power supply interference on the system bus. The company says this means it keeps the intermediate bus voltage within the tolerance band required by the power system architect.
Patrick LeFèvre, Director of Marketing and Communications for Ericsson Power Modules, said: "The ability to operate these advanced high power density DC / DC converters in parallel meets the ever-increasing demand for power in the data communications industry, which now reaches 2kW. Ericsson ’s HRR technology combined with the ability to easily parallelize these new modules can provide the necessary high-density power required for extreme data traffic applications. "
PKM4817LNH has a quarter brick form with a size of 57.9mm x 36.8mm x 11.4mm. It can work in an input voltage range of 45V to 60V and provide 10V at a speed of 80A in an operating system voltage range between 51V- 11V output voltage. And 60V. When it is lower than 50V, in the stable proportional mode, even if the system bus voltage provided by the front-end rectifier is abnormal, the output voltage will be self-adjusted to achieve the best operation and ensure a stable voltage of 9.0V to 11V. Obtaining a stable and stable voltage while the system bus is operating at its normal operating voltage becomes a very important function to avoid interruption of flow and to provide sufficient time for the system monitor to take necessary measures and turn on redundant power supply units or possibly shut down components. systematic.
PKM4817LNH is the product of Ericsson's "Designed for Efficiency" principle, which also has a typical efficiency of 97.1% under 60% load, and provides a flat curve characteristic of 20A to 70A, reducing power loss to a very low level and significantly reducing The power consumption. Helps reduce energy consumption.
PKM4817LNH meets the 2250V I / O functional isolation requirements and includes many I / O protection and operation functions, including input overvoltage suppression, soft-start for handling high capacitive loads, delayed overic protection, overheat protection, overheat protection . The company says-high and low voltage lockup.
