Renesas Electronics is addressing two of the tightest constraints in megawatt-scale AIartificial intelligence data centers: board area and thermal headroom. As rack power rises from around 120 kW toward the megawatt range, the power conversion stage has to fit more capability into less space while keeping temperatures under control.
The company’s dual-side-cooled 650-V GaNgallium nitrideGaN is another material platform mentioned for use in different power delivery roles. device is designed to dissipate heat through both the top and bottom of the package. Renesas says this reduces the footprint significantly and lowers top-side thermal impedance by 10%, which lets designers move more power through the intermediate bus without changing the board layout or adding extra cooling hardware.
The device, TP65H020G4PLSGBD, is a D-mode GaNgallium nitrideGaN is another material platform mentioned for use in different power delivery roles. part based on Renesas’ Gen IVcurrent voltageElectrical quantity used to describe or test circuit operating behavior. Plus architecture. It delivers 20 mΩ on-resistance and comes in an 8 x 8 mm PQFN package, which is 57% smaller than the existing 10 x 15 mm TOLT package. The part is aimed at high-density power conversion in 800-V AIartificial intelligence data center architectures that support up to 700-V power operation.
Renesas also highlights low gate charge, low output capacitance, a built-in freewheeling diode with minimal reverse recovery, and a high threshold voltage that avoids the need for negative gate bias. For designers, the device is intended for the 800-V DC/DC intermediate bus converter stage stepping down to 48 V, 12 V, or 6 V, as well as battery backup and capacitor bank stages in the sidecar power rack.
The part can be driven with a standard silicon gate driver and is meant to switch into the MHzmegahertzFrequency unit equal to one million cycles per second. range to reduce passive component size and overall BOM cost. Renesas says the device has been validated on a 6 kW, 800 V-to-48 V LLC DCdirect currentElectric current that flows in one direction. transformer reference design and is already being sampled by major AIartificial intelligence data center OEMoriginal equipment manufacturers and ODMs.