Topology | LLC Resonant Converter |
Input voltage | 90-265 V |
Output 1 | 52 V / 10.5 A |
IC revision | E1 |
This compact, high efficiency reference design with a 48-V DC, 500-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 94.5% 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.
Order Code | Datasheet | Simulation | Downloads | Status | Product series | Application | C | VR (V (AC)) | Safety Class | dV/dt (V/µs) | DF @ 1 kHz (%) | RISO | Operating Temperature | Pitch (mm) | L (mm) | W (mm) | H (mm) | Packaging | Endurance (h) | IRIPPLE (mA) | ILeak (µA) | DF (%) | Ø D (mm) | Samples | |
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![]() | 890324024005 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-FTX2 Film Capacitors | Across the mains | 470 nF | 275 | X2 | 280 | 0.1 | 21.28 GΩ | -40 °C up to +105 °C | 12.5 | 15 | 10 | 16 | Bulk | – | – | – | – | – | ||
![]() | 861011486022 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-AIG8 Aluminum Electrolytic Capacitors | – | 330 µF | 450 | – | – | – | – | -25 °C up to +85 °C | 10 | 35 | – | – | Tray | 2000 | 2290 | 2970 | 20 | 35 | ||
![]() | 750344399 | SPEC | – | – | Active i| Production is active. Expected lifetime: >10 years. | Flyback Transformer | – | – | – | – | – | – | – | – | – | 17.5 | 20 | 14 | – | – | – | – | – | – | |
![]() | 750344650 | SPEC | – | – | Active i| Production is active. Expected lifetime: >10 years. | Power Inductor | – | – | – | – | – | – | – | – | – | 24 | 24 | 24.64 | – | – | – | – | – | – | |
![]() | 750344651 | SPEC | – | – | Active i| Production is active. Expected lifetime: >10 years. | Power Inductor | – | – | – | – | – | – | – | – | – | 36.2 | 40.64 | 38.1 | – | – | – | – | – | – | |
![]() | 750344508 | SPEC | – | – | Active i| Production is active. Expected lifetime: >10 years. | Power Transformer | – | – | – | – | – | – | – | – | – | 35.56 | 37.34 | 34.29 | – | – | – | – | – | – |
Order Code | Datasheet | Simulation | |
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![]() | 890324024005 | SPEC | |
![]() | 861011486022 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | |
![]() | 750344399 | SPEC | – |
![]() | 750344650 | SPEC | – |
![]() | 750344651 | SPEC | – |
![]() | 750344508 | SPEC | – |
Samples |
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Order Code | Datasheet | Simulation | Downloads | Status | Product series | Application | C | VR (V (AC)) | Safety Class | dV/dt (V/µs) | DF @ 1 kHz (%) | RISO | Operating Temperature | Pitch (mm) | L (mm) | W (mm) | H (mm) | Packaging | Endurance (h) | IRIPPLE (mA) | ILeak (µA) | DF (%) | Ø D (mm) | Samples |
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