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Texas Instruments UCC28780 | Demoboard TIDA-01622
30-W/in3, 94% Efficiency, 65-W USB Type-C PD AC/DC Adapter Reference Design
Overview
| Topology | Flyback Converter |
| Input voltage | 85-265 V |
| Output 1 | 20 V / 3.25 A |
| IC revision | A |
Description
This fully tested, USB power delivery reference design is a high efficiency, high power density, AC/DC adapter solution with a wide input voltage range (85 - 265VAC) for laptop adapters and smartphone charger applications. It adopts active-clamp-flyback topology controlled by TI’s newest ACF controller UCC28780 as the mainly power supply stage. This design uses TPS25740B, TI’s PD source controller, to achieve a full PD 2.0 function. The design achieves a peak efficiency of 92% at a very high switching frequency. The design’s power density is increased to 30 W/in³, which is much higher than traditional solutions.
Features
- High efficiency (92% peak value)
- High power density (30W/in³)
- Low no load power consumption (60mW)
- Low light load input power (0.5W), @20Vout/0.25W output
- Fully compatible with USB PD 2.0 standard, with 5V/3A, 9V/3A, 15V/3A, 20V/3.25A output
- Active-clamp flyback + SR topology
- Small size (62mm26.8mm20mm)
Typical applications
- Smart phone, Laptop
- Industrial AC/DC
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | ISAT,10%(A) | fres(MHz) | Version | Interface Type | Type | Gender | Pins | PCB Thickness(mm) | Working Voltage(V (DC)) | Packaging | IR(A) | L(µH) | RDC max.(Ω) | VR(V (AC)) | VT(V (AC)) | Material | L(mm) | W(mm) | H(mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-TI Radial Leaded Wire Wound Inductor, 8.5 A, 140 MHz | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TI Radial Leaded Wire Wound Inductor | Saturation Current @ 10%8.5 A | Self Resonant Frequency140 MHz | VersionHeat Shrinking Tube | – | – | – | – | – | – | – | Rated Current8.5 A | Inductance1 µH | DC Resistance0.015 Ω | – | – | – | Length6 mm | Width6 mm | Height8.5 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 | – | – | VersionTHT | – | – | – | Pins4 | – | – | – | Rated Current0.5 A | Inductance20000 µH | DC Resistance0.54 Ω | Rated Voltage250 V (AC) | Insulation Test Voltage1500 V (AC) | MaterialMnZn | Length17.5 mm | Width13 mm | Height22 mm | MountTHT | ||||
 | WR-USB Type C Connectors, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-USB Type C Connectors | – | – | – | Interface TypeType C | TypeHorizontal | GenderReceptacle | Pins24 | PCB Thickness1.6 mm | Working Voltage48 V (DC) | PackagingTape and Reel | Rated Current5 A | – | – | – | – | – | – | – | – | MountTHR | |||
 | 750343803 | Transformer, –, – | Downloads5 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product series Transformer | – | – | – | – | – | – | – | – | – | PackagingTray | – | Inductance75 µH | – | – | Insulation Test Voltage3750 V (AC) | – | Length21.59 mm | Width21.59 mm | Height17.27 mm | MountTHT |