Multiphase controllers and smart power for 1000A AI loads

October 19, 2020 //By Nick Flaherty
Multiphase controllers and smart power for 1000A AI loads
The ISL6822x, ISL6823x, RAA2282xx digital multiphase controllers and ISL993xx, RAA2213xx smart power stages support up to 100A in AI designs in IoT infrastructure.

Renesas Electronics has laiunched its second generation of multiphase power controller, aiming at boards that consume up to 1000A in the data centre and the Internet of Things (IoT).

The digital multiphase controllers and six smart power stages support from 10A to 1000A+ digital computing loads for advanced CPUs, FPGAs, GPUs and artificial intelligence (AI) ASICs in IoT infrastructure systems. The ISL6822x, ISL6823x, RAA2282xx digital multiphase controllers and ISL993xx, RAA2213xx smart power stages provide support for the rapidly increasing power densities in data centre servers, storage, optical transport, routers, switches, as well as computing and 5G wireless infrastructure equipment.

“Renesas provides customers the industry’s widest digital multiphase portfolio and is the only supplier with 20-phase controllers for ultra-high current 1000A+ GPUs and AI ASICs,” said Andrew Cowell, Vice President, Mobility, Infrastructure and IoT Power Business Division at Renesas. “Our customers appreciate the digital multiphase platform’s patented synthetic current control architecture for fastest transient response, reduced output capacitance and lower system cost. In addition, the digital multiphase controllers significantly reduce time to market with solder-free tuning of any application using Renesas’ PowerNavigator software, the first of its kind for digital multiphase controllers.”

The digital multiphase controllers enable greater scalability and flexibility for adapting to any system requirement without requiring phase doublers. From two phases to 20 native phases, a controller can be configured for a range of applications, depending on output current requirements. In addition, individual setpoints can be set for adding/dropping phases to maximize efficiency across the entire load range. Each controller’s on-chip non-volatile memory allows the entire configuration to be saved to the device, eliminating the need for discrete components for setup and tuning. And 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


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