94.5% Efficiency: 500W industrial AC-DC reference design
Description
This reference design is a compact: high efficiency: 24-V DC: 500-W reference design for industrial AC/DC power supplies. This design consists of a front-end: two-phase interleaved transition mode (TM) power factor correction (PFC) based on the UCC28064A. This minimizes the PFC inductor size and reduces EMI filter requirements. The DC-DC is implemented using the HB-LLC stage implemented using TI's UCC256301 device. For efficiency improvement: synchronous rectification is used at secondary which uses the UCC24612.
Features
- Overall efficiency of 94.5% at full load with peak efficiency > 95%Up to 330-W operation without forced coolingHigh power factor > 0.99 and meets PFC regulations and current THD as per IEC 61000-3- 2 Class AMeets requirements of conducted emissions standard (EN55011 Class B)ZCS avoidance feature and OVP sensing feature in LLC controller improves robustness and protects systems from overcurrent: short circuit: and overvoltage to ensure safetySmall 160 mm × 80 mm × 35 mm PCB form factor
Applications
- Rack & server PSU with 48-V output
- Industrial AC-DC
- Standalone avionics PFC
- Medical PSU
- Merchant telecom rectifiers
- Linear motor power supply
Product Categories
- Power management