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Texas Instruments UCC256301 | Demoboard TIDA-010038
94% peak efficiency, 150-W norm, 240-W peak, industrial AC/DC power supply with CC/CV reference design
Overview
| Topology | LLC Resonant Converter |
| Input voltage | 85-265 V |
| Switching frequency | 35-1000 kHz |
| Output 1 | 28 V / 10 A |
| IC revision | 001 |
Description
This compact, high efficiency, 24V DC, 150W nominal, 240W peak output at 230VAC reference design is targeted for industrial AC/DC power supplies. The circuit consists of a frontend transition mode (TrM) power factor correction(PFC) circuit based on the UCC28056, followed by a robust LLC stage for an isolated DC/DC converter based on the UCC256301. For high efficiency needs, synchronous rectification is done with the UCC24624. This design does not need an additional auxiliary power supply to meet no-load consumption. The design enables 94% peak efficiency and allows the system to work without forced cooling. This design has both constant current(CC) and constant voltage(CV) feedback loop which is suitable for battery charger application.
Features
- Wide operation input range of 90 to 265V AC with full power delivery over entire range
- Peak overall efficiency of 94.4% at 230V AC and 93% at 115V AC, enables natrual convection cooling
- Delivers up to 6.25A continuous current and up to 10A peak current for 3 seconds
- Adjustable output voltage from 22 to 28V
- Very low no load power consumption of <400mW
- System protected for overcurrent, short-circuit, and overvoltage ensuring safety needs
Typical applications
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Product series | Application | C | Safety Class | dV/dt (V/µs) | DF @ 1 kHz (%) | RISO | Operating Temperature | Pitch (mm) | Packaging | IR (A) | L (mH) | RDC max. (mΩ) | VR (V (AC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 890324025039 | SPEC | 8 files | WCAP-FTX2 Film Capacitors | Across the mains | 470 nF | X2 | 220 | 0.1 | 21.28 GΩ | -40 °C up to +105 °C | 15 | Bulk | – | – | – | 275 | – | – | 18 | 8 | 14 | Boxed THT | ||
 | 744821201 | SPEC | 10 files | WE-CMB Common Mode Power Line Choke | – | – | – | – | – | – | -40 °C up to +125 °C | – | – | 2 | 1 | 45 | 250 | 1500 | MnZn | 15 | 7.8 | 18 | THT | ||
 | 744823210 | SPEC | 10 files | WE-CMB Common Mode Power Line Choke | – | – | – | – | – | – | -40 °C up to +125 °C | – | – | 2 | 10 | 125 | 250 | 1500 | MnZn | 23 | 13.8 | 26.5 | THT | ||
 | 7447060 | SPEC | – | 6 files | WE-FI Leaded Toroidal Line Choke | – | – | – | – | – | – | – | – | – | 2.5 | 0.3 | – | – | – | – | 21 | 11.2 | – | – | |
| 750344060 | SPEC | – | – | Power Transformer | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 890324025039 | SPEC | |
| 744821201 | SPEC | |
| 744823210 | SPEC | |
| 7447060 | SPEC | – |
| 750344060 | SPEC | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Product series | Application | C | Safety Class | dV/dt (V/µs) | DF @ 1 kHz (%) | RISO | Operating Temperature | Pitch (mm) | Packaging | IR (A) | L (mH) | RDC max. (mΩ) | VR (V (AC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples |
|---|