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Overview
| Topology | LLC Resonant Converter |
Description
This design uses a Critical Conduction Mode (CrCM/DCM) PFC (AC-400 VDC), followed by an LLC DC-DC (400-19 VDC). For both stages, the switching frequency was increased to the maximum allowed by the off-the-shelf control ICs available. The board is designed to be a ‘demonstration’ board, and is not yet optimized as a production design. With this design, a power density of 2.18 W/cc or 35.75 W/in3 is achieved, which is around 2x typical and 40% more than the best-on-class Si-based design today. Customer designs are expected to achieve even higher power density. The PFC section is a standard ON Semi NCP1615 CrCM/DCM powering 2x NV6115 (parallel) GaNFast Power ICs directly. Critical mode PFC (also known as boundary mode) is a soft-switching topology which allows higher frequency operation. The DC-DC section uses the NCP13992 current-mode resonant controller (LLC) driving NV6115s. The NV6115s have monolithically-integrated gate drivers, so the NCP13992’s drivers are not used and loss is minimized.
Typical applications
- PFC
- LLC
All technical functions in detail
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC (mΩ) | fres (MHz) | IR (A) | L (µH) | RDC max. (mΩ) | VR (V (AC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 7443251600 | 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. | WE-HCI SMT Flat Wire High Current Inductor | 6.25 | 3.2 | 6.5 | 34.5 | 18 | – | 16 | 37.95 | – | – | Superflux | 10.5 | 10.2 | 4.7 | SMT | ||
 | 7448030509 | SPEC | 10 files | Active i| Production is active. Expected lifetime: >10 years. | WE-CMBNC Common Mode Power Line Choke Nanocrystalline | – | – | – | – | – | 5 | 9000 | 32 | 300 | 2100 | Nanocrystalline | 23 | 13.5 | 26 | THT | ||
 | 7447018 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WE-FI Leaded Toroidal Line Choke | – | – | – | – | – | 2.5 | 150 | 100 | – | – | – | 16.5 | 10.7 | – | THT | |
 | 750317229 | SPEC | – | 4 files | Active i| Production is active. Expected lifetime: >10 years. | Transformer | – | – | – | – | – | – | 190 | – | – | 3000 | – | 26.5 | 32.1 | 11 | THT | |
 | 750317297 | SPEC | – | 4 files | Active i| Production is active. Expected lifetime: >10 years. | Inductor | – | – | – | – | – | – | 77.5 | – | – | 500 | – | 26.5 | 31.2 | 11 | THT |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 7443251600 | 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. | |
| 7448030509 | SPEC | |
| 7447018 | SPEC | – |
| 750317229 | SPEC | – |
| 750317297 | SPEC | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC (mΩ) | fres (MHz) | IR (A) | L (µH) | RDC max. (mΩ) | VR (V (AC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples |
|---|
Suitable Reference Designs
Products of interest
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