EVAL_3KW_50V_PSU
Server and data center 3 kW 50 V PSU
This design introduces a complete Infineon’s system solution for a 3 kW power supply unit (PSU) targeting the newly released OCP V3 rectifier specifications for servers and data centers. The PSU comprises a front-end AC-DC bridgeless totem pole converter followed by a back-end DC-DC isolated half-bridge LLC converter. The front-end totem pole converter provides power factor correction (PFC) and total harmonic distortion (THD). The LLC converter provides safety isolation and a tightly regulated output voltage.
The measured peak efficiency of the complete PSU at 230 VAC is 97.5%, not including the internal fan, and 97.4%, including the internal fan. The overall outer dimensions of the PSU are 73.5 mm x 520 mm x 40 mm, which yields a power density in the range of 32 W/inch³ (1.95 W/cm³). This system solution is available as Hardware Board or Reference Design.
Zusammenfassung der Merkmale
- Complete power supply targeting the Open Compute V3 rectifier specifications
- Very high peak efficiency
- Bridgeless totem-pole PFC with CoolSiC™
- Half-bridge LLC with CoolMOS™ and OptiMOS™
- Full digital control with XMCTM microcontrollers
Vorteile
- Open Compute V3 rectifier (PSU) form factor (overall dimensions)
- 97.5 % peak of efficiency (fan not included) at 230VAC
- Very high efficiency combining CoolSiC™, CoolMOS™ and OptiMOS™
- 20ms hold-up time at full load
- EMC class B pre-compliance tested
Potentielle Zielanwendungen
List of components
- CoolSiC™ 650 V 48 mΩ in the totem pole PFC half-bridge
(IMZA65R048M1H) - 600 V CoolMOS™ 17 mΩ in the totem pole PFC SRs
(IPW60R017C7) - 600 V CoolMOS™ CFD7 24 mΩ in the LLC primary-side half-bridge
(IPW60R024CFD7) - OptiMOS™ 5 80 V 3.7 mΩ in Super SO-8 package in the LV bridge
(BSC037N80NS5) - EiceDRIVER™ single-channel driver for CoolMOS™, CoolSiC™ and CoolGaN™
(1EDB8275F) - EiceDRIVER™ single-channel driver for CoolMOS™, CoolSiC™ and CoolGaN™
(1EDB9275F) - EiceDRIVER™ dual-channel driver for CoolMOS™, CoolSiC™ and OptiMOS™
(2EDF7275F) - Flyback controller with built-in 800 V CoolMOS™ 2.26 Ω for the auxiliary supply
(ICE2QR2280G QR) - XMC1404 microcontroller for the totem pole PFC control implementation
(XMC1404-LQFP-64) - XMC4200 microcontroller for the LLC control implementation
(XMC4200-F64k256AB) - DC-DC step-down voltage regulator
(IFX91041EJ V33) - Medium-power Schottky diode
(BAT165)
Introduction Guide
Download the reference design data here.
