| Topology | Flyback Converter |
| Input voltage | 85-265 V |
| Output 1 | 12 V / 1 A |
| IC revision | A |
The PMP20634 reference design is an isolated DCM flyback design that takes a universal line input 85VAC to 265VAC, and produces a 12V ouput capable of 12W loading. The design uses the UCC28730 controller that achieves ultra-low standby power at no load. It achieves 85% efficiency at high and low line, and measures 1in x 3in on a 2 layer board
Remark: Schematic BOM and Test-Results are added.
FeaturesUniversal input, 85VAC to 265VACAchieves over 85% efficiency at low and high lineOptional, isolated-disable circuit availablePrimary side regulation allows for simple design2-layer board, 1 oz copper, measuring 1in x 3in
Order Code | Datasheet | Simulation | Downloads | Status | Product series | VIN | VOut1(V) | IOut1(A) | Vaux(V) | fswitch(kHz) | NPRI : NSEC : NAUX | ISAT(mA) | Size | IR(A) | L(µH) | RDC max.(mΩ) | VR(V (AC)) | VT(V (AC)) | Material | L(mm) | W(mm) | H(mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
![]() | WE-OLTI Offline Flyback Transformers, 85 - 265 V (AC), 12 V | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-OLTI Offline Flyback Transformers | Input Voltage 85 - 265 V (AC) | Output Voltage 112 V | Output Current 11 A | Auxiliary Voltage12 V | Switching Frequency 70 | Turns Ratio6:1:1 | Saturation Current925 mA | SizeEE16/8/5 | – | Inductance500 µH | – | – | Insulation Test Voltage3000 V (AC) | – | Length20.32 mm | Width24.38 mm | Height16 mm | MountTHT | ||||
![]() | WE-CMB Common Mode Power Line Choke, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CMB Common Mode Power Line Choke | – | – | – | – | – | – | – | SizeXS | Rated Current2 A | Inductance1000 µH | DC Resistance45 mΩ | Rated Voltage250 V (AC) | Insulation Test Voltage1500 V (AC) | MaterialMnZn | Length15 mm | Width7.8 mm | Height18 mm | MountTHT |