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Renesas RAA2282x Digital Multiphase Controllers are 2nd generation controllers that enable greater scalability and flexibility for adapting to any system requirement without requiring phase doublers. Individual setpoints can be set for adding/dropping phases to maximize efficiency across the entire load range. On-chip non-volatile memory allows a configuration to be saved to the device, eliminating the need for discrete components for setup and tuning. A black box captures fault events, allowing faster diagnostics and debugging.
The controllers’ high-performance digital engine features a patented synthetic current control architecture that tracks each phase current with zero latency. This allows the device to respond to any load transient with precise current and voltage positioning, and 30% less capacitance than competitive devices. Synthetic current control also makes it possible to develop high-reliability systems using all ceramic capacitors.
With full digital control of the power supply, the entire system can be monitored and controlled via PMBus and AVSBus interfaces to the system managers. The AVSBus interface allows connection to any general market ASIC or processor for monitoring and adaptive voltage positioning, which delivers energy efficiency by adjusting the power supply to the load requirements. The PMBus interface provides full monitoring of I/O voltages and currents, temperature, and fault reporting.
