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Texas Instruments UCC28740 | Demoboard PMP30276
440VAC Input Tampering Protected Valley Switching Flyback Reference Design
Overview
| Topology | Flyback Converter |
| Input voltage | 156-400 V |
| Switching frequency | 100 kHz |
| Output 1 | 12 V / 1 A |
| IC revision | B |
Description
The PMP30276 is a tampering protected power supply reference design which can withstand an external magnetic field of 200mT. The frequency and amplitude modulation modes and the transformer were optimized for the protection against magnetic tampering at the expense of efficiency. The design uses the UCC28740 flyback controller to generate an isolated output 12V@0.5A (1.0A peak) from an AC input (156VAC-440VAC). The UCC28740 uses an optical coupler to regulate the output and to improve transient response.
Features
Isolated outputValley switchingGood transient responseIntegrated 700V startup switchTest report available
Typical applications
- Industrial applications and appliances
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | ISAT(A) | fres(MHz) | IR(A) | L(µH) | RDC max.(Ω) | VR(V (AC)) | VT(V (AC)) | Material | L(mm) | W(mm) | H(mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-TI HV Radial Leaded Wire Wound Inductor (High Voltage), 1.3 A, 3.7 MHz | Status Activei| Production is active. Expected lifetime: >10 years. | Saturation Current1.3 A | Self Resonant Frequency3.7 MHz | Rated Current0.9 A | Inductance220 µH | DC Resistance0.6 Ω | – | – | – | Length7.8 mm | Width7.8 mm | Height9.5 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 | – | – | Rated Current1.5 A | Inductance3300 µH | DC Resistance0.12 Ω | Rated Voltage250 V (AC) | Insulation Test Voltage1500 V (AC) | MaterialMnZn | Length17.5 mm | Width13 mm | Height22 mm | MountTHT | ||||
750370934 | Flyback Transformer, –, – | Simulation– | Downloads– | Status Newi| Product is new in our portfolio and production is active. Expected lifetime: >10 years. | Product series Flyback Transformer | – | – | – | – | – | – | – | – | – | – | – | – |