Technology advances and the demands being placed on high power Artificial Intelligence data centers are stretching the boundaries of the existing power solutions. Increasingly sophisticated power solutions are driving a rapidly increasing demand for highly efficient, resonant power supplies.
These, in turn, require complex Printed Circuit Board (PCB) designs, components with extremely tight tolerances, and other high-cost solutions.
Infineon Technologies’ AG answer to this design challenge is the Zero Voltage Switching (ZVS) Switched Capacitor Converter topology. This new topology approach offers best-in-class performance, efficiency, and power density at a lower cost than existing solutions.
A single ZVS Switched Capacitor Converter design can deliver up to 1kW, and is well suited for advanced server and GPU applications that use 48V to 60V inputs. Target applications include:
- Server and storage
The ZVS Switched Capacitor Converter topology uses capacitive energy transfer to generate an intermediate bus voltage. This feeds the multi-phase buck regulators that power up CPUs, GPUs, ASICs, SoCs, and memory. The ZVS inductor (LZVS) always guarantees soft switching by providing a discharge path for all MOSFETs prior to turn-on. This ensures that the efficiency of the converter is independent of the resonant capacitor and inductor tolerance (LR1 and LR2).
Key features and benefits:
- Best-in-class efficiency/power density with ZVS SCC
- Immune to component tolerances
- Better utilization of PCB area due to elimination of “external” resonant inductors
- Reduced overall solution cost
- Single ZVS Switched Capacitor Converter design can deliver up to 1 kW
All components used in the Zero Voltage Switching (ZVS) Switched Capacitor Converter solution are readily available from Infineon.