El Segundo, Calif. International Rectifier introduced another chipset into their XPhase family of control ICs and phase ICs for scalable multi-phase, interleaved buck DC-DC converters, adding N+1 redundancy, hot-swapping capability and a host of protection features. IR's new chipset, comprising the IR3510 XPhase Control IC and companion IR3086A and IR3088A Phase ICs, is suitable for powering high-availability CPUs and servers in fault-tolerant applications where live insertion is required.
The IR3510 Control IC implements synchronous buck topology, combined with input MOSFETs for hot-swapping and output MOSFETs for ORing, to aid system protection against failures such as short circuits. Average-current-mode control is used to implement droop sharing between converters without any single-point failure modes, thus enabling N+1 redundancy. Additionally, the chipset provides input isolation protection, allowing hot-swapping of power modules without damage, while enabling 100% availability of power to the system.
Pricing: $7.49 each in 10,000-piece quantities
Data Sheets: IR3510, IR3086A, IR3088A
International Rectifier, 310 252 7105, www.irf.com