Ramaxel in China is using intelligent cloud power technologies from onsemi for its upcoming Intel-based VR13.HC and VR14 servers.
perhaps better known for its DRAM memory cards, Ramaxel’s latest family of VR13.HC servers will use the FD3501 digital multiphase controller. The 8 phase controller can be configured for single or dual rail output rails and is fully compatible with Intel SVID protocol.
Power requirements are increasing in each successive processor generation, now hitting 1000A, and onsemi plans to release 8-phase and 12-phase digital multiphase controllers to support Intel’s VR14 server platform.
The onsemi Advanced COT control architecture features extremely low latency against severe load transients and easily permits a high switching frequency design with ceramic only output capacitors. Non−Volatile OTP Memory is included to store multiple custom configurations and it also implements a fast−to−change dynamic phase management and a variable frequency light load control from 400kHz to 1.5MHz. All of the required parameters are programmable through the PMBus interface.
The controller will be used with smart power stages, point-of-load regulators and e-Fuse technologies from onsemi.
“onsemi fully enabled our VR13.HC platform development and we are confident they will provide Ramaxel with best-in-class technologies for our next generation VR14 server platform development,” said Ding Wang, Ramaxel vice president of Server Development and Corporate R&D at Ramexel.
“As an emerging leader in the fast-growing cloud market, we must have confidence in our suppliers. onsemi has become a strategic partner for us due to their superior quality, innovation, efficiency, technical support and supply capabilities that enabled us to streamline our development process and prepare for high volume production,” said AB Wang, Ramaxel senior vice president of the Server Business Unit and Storage/Flash Development.
“onsemi has over 20 years of experience in the design and high-volume production of multiphase controllers,” said Robert Tong, vice president of the Mobile, Computing and Cloud Division at onsemi. “The release of the FD3501 digital multiphase controller extends our portfolio to the latest generation of cloud server systems based on Intel’s VR13.HC platform and solidifies the company as a total solution supplier.”
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