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Texas Instruments UCC256302 | Demoboard PMP21582
260 W off-line multiple-output LLC-SRC reference design
Overview
| Topology | LLC Resonant Converter |
| Input voltage | 100-130 V |
| Switching frequency | 35-1000 kHz |
| Output 1 | 13.8 V / 0.8 A |
| Output 2 | 30 V / 8.33 A |
| Output 3 | 3.3 V / 0.2 A |
| IC revision | B |
Description
This reference design uses UCC256302 LLC resonant controller to provide US-line AC input to a 30-V, 250-W output and a 13.8-V, 11-W output conversion. The low profile design has a maximum height of 1 inch. This design achieves 94% peak efficiency at 120-VAC input.
Features
- US-line AC input is narrow enough for a single-stage LLC design that does not require a PFC
- 94% peak efficiency achieved with non-synchronous rectifier output
- Low-profile board design for a smaller solution size compared to AC transformer
- Tight-cross regulation for 30-V DC motor outputIntegrated resonant inductor allows for smaller BOM count
Typical applications
- Digital TV SMPS / Appliances
- Multi-Functional Printers / Projectors / ATX Power Supply
- High Power Battery Charging
- Industrial AC-DC
- AC-DC Adapter / Merchant DC-to-DC / DIN Rail Power Supply
- Multi-Axis Servo
- LED Lighting Applications
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | VR(V (AC)) | Safety Class | dV/dt(V/µs) | DF @ 1 kHz(%) | RISO | Pitch(mm) | L(mm) | W(mm) | H(mm) | Packaging | Tol. C | Size | Operating Temperature | DF(%) | Ceramic Type | Fl(mm) | L(µH) | IR(A) | RDC max.(Ω) | 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 | Rated Voltage275 V (AC) | Safety ClassX2 | Rate of Voltage Rise280 V/µs | Dissipation Factor0.1 % | Insulation Resistance21.28 GΩ | Pitch12.5 mm | Length15 mm | Width10 mm | Height16 mm | PackagingBulk | Capacitance±10% | SizePitch 12.5 mm | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | – | ||||
 | WE-FI Leaded Toroidal Line Choke, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-FI Leaded Toroidal Line Choke | – | – | – | – | – | – | – | Length19 mm | Width11.1 mm | – | – | – | – | Operating Temperature -40 °C up to +105 °C | – | – | – | Inductance29 µH | Rated Current8 A | DC Resistance0.015 Ω | |||
| WCAP-CSGP MLCCs 50 V(DC), –, 100 pF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 50 V(DC) | Capacitance100 pF | Rated Voltage50 V (AC) | – | – | – | Insulation Resistance10 GΩ | – | Length1 mm | Width0.5 mm | Height0.5 mm | Packaging7" Tape & Reel | Capacitance±10% | Size0402 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor2.5 % | Ceramic TypeX7R Class II | Pad Dimension0.25 mm | – | – | – | |||||
750318019 | Common Mode Choke, –, – | Simulation– | Downloads– | Status Activei| Production is active. Expected lifetime: >10 years. | Product series Common Mode Choke | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |