Infineon Claims First 1000A Voltage Regulator Solution for Next-Gen AI and 5G Networking

March 27, 2019 Alix Paultre

Infineon Technologies’ XDPE132G5C is presenting the industry’s first 16-phase digital PWM multiphase controller, enabling currents from 500A to 1000A and above for next-generation CPUs, GPUs, FPGA and ASICs used in high-end artificial intelligence (AI) servers and 5G datacom applications. With a true 16-phase digital PWM engine and an improved advanced transient algorithm, the XDPE132G5C controller addresses high phase-count requirements.

True active current-sharing between phases enables a reliable, compact and cost-saving design, and there is no need for extra logic doubler ICs commonly used. The XDPE132G5C offers fine Vout setting in 0.625mV increments and supports auto-restart with options to reduce remote site maintenance following power or system glitches. Packaged in a 7mm x 7mm 56-pin QFN, the XDPE132G5C employs a full digital and programmable load line and is PMBus 1.3/AVS compliant. Paired with TDA21475, the XDPE132G5C controller can efficiently deliver over 1000 A.

The 70 A-rated TDA21475 power stage, housed in a 5 mm x 6 mm package, provides industry-leading efficiency of more than 95 percent. The exposed top significantly reduces the R th(j-top) from 19°C/W in the over-molded package to 1.6°C/W. The TDA21475 also offers smart overcurrent and overvoltage protection and delivers accurate temperature and current information to the XDPE132G5C controller.

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