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Texas Instruments UCC25800-Q1 | Demoboard PMP23240
3-W LLC bias supply with dual 18-V output reference design
Overview
| Topology | LLC Resonant Converter |
| Input voltage | 11.4-12.6 V |
| Output 1 | 18 V / 0.09 A |
| IC revision | A |
Description
This reference design uses a single UCC25800-Q1 to drive two LLC transformers with 600-kHz switching frequency. The transformer used in this design is 750319177 which is an off-the-shelf catalog transformer featuring low-interwinding capacitance of 0.68-pF typical which is beneficial for minimizing common-mode current in gate driver bias applications with high slew rates. This design generates two isolated 18-V rails. Each output can be loaded to 1.5 W.
Features
78.8% peak efficiencyCatalog, off-the-shelf transformer with 0.68-pF interwinding capacitanceSingle-sided assembly
Typical applications
- Three phase UPS
- Single phase online UPS
More information
Products
| Order Code | Datasheet | Downloads | Status | Product series | VIN (V) | VOut1 (V) | PO (W) | CWW 1 (pF) | L (µH) | ∫Udt (µVs) | fswitch (kHz) | n | Version | IC Reference | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 750319177 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WE-AGDT Auxiliary Gate Drive Transformer | 7.5 | 13 | 4.55 | 0.68 | 16.5 | 36 | 500 | 1:1.67 | LLC | UCC25800 |
| Samples |
|---|
| Order Code | Datasheet | Downloads | Status | Product series | VIN (V) | VOut1 (V) | PO (W) | CWW 1 (pF) | L (µH) | ∫Udt (µVs) | fswitch (kHz) | n | Version | IC Reference | Samples |
|---|