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Texas Instruments UCC28740DR | Demoboard PMP10936
85-265VAC Input, 12V/30W Two-Switch Flyback Reference Design
Overview
| Topology | Flyback Converter |
| Input voltage | 85-265 V |
| Output 1 | 12 V / 2.5 A |
| IC revision | C |
Description
The PMP10936 reference design uses the UCC28740 to provide an isolated 12V at 2.5A output. The UCC24632 is used to control a synchronous recitifer for high efficiency. The two-switch flyback topology recycles the transformer's leakage energy and provides a further improvement in efficiency.
Features
Remarks- Schematic and BOM is added with EVM pdf
Over 89% average efficiencyLess than 40mW standby power consumptionConstant current regulation prevents excessive currents in overloadCompact size 53mm X 55mm X 23mm (2.1" X 2.15" X 0.9")
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | VIN | VOut1(V) | IOut1(A) | Vaux(V) | Vaux 2(V) | fswitch(kHz) | NPRI : NSEC : NAUX | ISAT(A) | 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 13 A | Auxiliary Voltage18 V | Auxiliary Voltage 26 V | Switching Frequency 100 | Turns Ratio7:1:1.5:0.5 | Saturation Current2.2 A | SizeEE20/10/6 | – | Inductance220 µH | – | – | Insulation Test Voltage4500 V (AC) | – | Length22.2 mm | Width25 mm | Height16.5 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 Current1.5 A | Inductance4000 µH | DC Resistance140 mΩ | Rated Voltage250 V (AC) | Insulation Test Voltage1500 V (AC) | MaterialMnZn | Length15.8 mm | Width7.8 mm | Height18 mm | MountTHT |