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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 | Status | Product series | C | Safety Class | dV/dt(V/µs) | DF @ 1 kHz(%) | RISO | 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WCAP-FTX2 Film Capacitors, Across the mains, 470 nF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-FTX2 Film Capacitors | Capacitance470 nF | Safety ClassX2 | Rate of Voltage Rise220 V/µs | Dissipation Factor0.1 % | Insulation Resistance21.28 GΩ | Pitch15 mm | PackagingBulk | – | – | – | Rated Voltage275 V (AC) | – | – | Length18 mm | Width8 mm | Height14 mm | MountBoxed THT | ||||
 | 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 Current2 A | Inductance1 mH | DC Resistance45 mΩ | Rated Voltage250 V (AC) | Insulation Test Voltage1500 V (AC) | MaterialMnZn | Length15 mm | Width7.8 mm | Height18 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 Current2 A | Inductance10 mH | DC Resistance125 mΩ | Rated Voltage250 V (AC) | Insulation Test Voltage1500 V (AC) | MaterialMnZn | Length23 mm | Width13.8 mm | Height26.5 mm | MountTHT | ||||
 | WE-FI Leaded Toroidal Line Choke, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-FI Leaded Toroidal Line Choke | – | – | – | – | – | – | – | Rated Current2.5 A | Inductance0.3 mH | DC Resistance150 mΩ | – | – | – | Length21 mm | Width11.2 mm | – | MountTHT | |||
750344060 | Power Transformer, –, – | Simulation– | Downloads– | Status Activei| Production is active. Expected lifetime: >10 years. | Product series Power Transformer | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |