93% Efficiency: 400-W AC/DC reference design for avionics
Description
This is a compact: 30-V DC: 400-W reference design for avionics applications: accepting main frequencies between 400 Hz and 800 Hz. This design consists of a front-end: two-phase interleaved transition mode (TM) power factor correction (PFC) based on UCC28064A. This minimizes the PFC inductor size and reduces EMI filter requirements. The DC/DC is implemented by employing HB-LLC stage: using UCC256404. For efficiency improvement: synchronous rectification is used at secondary side with FETs driven by UCC24612.
Features
- Overall efficiency of 92.5% at full load with peak efficiency > 93%High power factor > 0.99: meets PFC regulations and current THD for DO-160 avionics requirementsZCS avoidance feature and OVP sensing feature in LLC controller improves robustness and protects systems from overcurrent: short circuit and overvoltage to ensure safetySmall PCB form factor of 160 mm by 80 mm by 30 mm
Applications
- Full authority digital engine control (FADEC)
- Standalone avionics PFC
Product Categories
- Power management