| Topology | Buck Converter |
| Input voltage | 200-400 V |
| Output 1 | 5 V / 0.1 A |
| IC revision | A |
This reference design is a compact and thermally efficient design intended to be used as a bias supply for half-bridge converters. A DCM Flyback with UCC3813-4 controller is used to generate two isolated 12V supplies for half-bridge converter primary driving circuitry. One 5V is generated at the secondary side for secondary rectifier driving circuitry and controller. The second winding at secondary side can be used to sense input voltage level while the Flyback converter is operating.
Remarks: Schematic and BOM is added with Test Procedure PDF
200VDC to 400VDC input, two isolated 12V output at primary side and one 5V output at secondary sideLess than 30 degree C temperature rise on all partsInput voltage sensing circuit included1" x 1.5" x 0.5" board dimensionTest report available
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR(V (DC)) | Size | Operating Temperature | DF(%) | RISO | Ceramic Type | L(mm) | W(mm) | H(mm) | Fl(mm) | Packaging | L(µH) | IR(A) | ISAT(A) | fres(MHz) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 16 V(DC), 100 nF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 16 V(DC) | Capacitance100 nF | Capacitance±10% | Rated Voltage16 V (DC) | Size0402 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor5 % | Insulation Resistance5 GΩ | Ceramic TypeX7R Class II | Length1 mm | Width0.5 mm | Height0.5 mm | Pad Dimension0.25 mm | Packaging7" Tape & Reel | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 10 V(DC), 10 µF, ±10% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 10 V(DC) | Capacitance10 µF | Capacitance±10% | Rated Voltage10 V (DC) | Size0805 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor10 % | Insulation Resistance0.01 GΩ | Ceramic TypeX7R Class II | Length2 mm | Width1.25 mm | Height1.25 mm | Pad Dimension0.5 mm | Packaging7" Tape & Reel | – | – | – | – | – | |||||
![]() | WE-TPC SMT Tiny Power Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TPC SMT Tiny Power Inductor | – | – | – | Size2828 | Operating Temperature -40 °C up to +125 °C | – | – | – | Length2.8 mm | Width2.8 mm | Height2.8 mm | – | – | Inductance2.2 µH | Rated Current1.8 A | Saturation Current2.4 A | Self Resonant Frequency130 MHz | MountSMT |