Texas Instruments UCC256403 | Demoboard TIDA-010081

Beschreibung

This compact, high efficiency reference design with a 54-V DC, 1000-W output targets 5G telecom power and industrial AC/DC power supplies. The circuit consists of a front-end continuous conduction mode (CCM) power factor correction (PFC) circuit based on the UCC28180, followed by a robust LLC stage for an isolated DC/DC converter based on the UCC256403. For high efficiency needs, the UCC24624 handles synchronous rectification. This design uses an auxiliary power supply flyback with the UCC28911, which has an internal high-voltage MOSFET. This design enables 95.9% peak efficiency and allows the system to work without forced cooling. The whole system has low iTHD, with 30% load at <12%, 50% load at <8%, 100% load at <5.5%, and good load transient performance.

Eigenschaften

• Peak efficiency of 95.9% at 230-V AC and 95% across 30%~100% load
• CCM PFC and half bridge LLC based (UCC28180 and UCC256403)
• Low iTHD: 30% load at <12%, 50% load at <8%, 100% load at <5.5%
• Good load transient performance at less than 1% regulation
• Meets ±1% accuracy for input power meter across whole load range
• Passive cooling with sealed metal case

Typische Anwendungen

• 5G telecom rectifier, Merchant telecom rectifiers
• Industrial AC/DC

Weiterführende Informationen

• Datenblatt
• Produktseite des IC-Herstellers