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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 | 3.3 V / 0.2 A |
| Output 3 | 30 V / 8.33 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 | Application | C | VR (V (AC)) | Safety Class | dV/dt (V/µs) | DF @ 1 kHz (%) | RISO | Operating Temperature | 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 890324024005 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-FTX2 Film Capacitors | Across the mains | 470 nF | 275 | X2 | 280 | 0.1 | 21.28 GΩ | -40 °C up to +105 °C | 12.5 | 15 | 10 | 16 | Bulk | ±10% | Pitch 12.5 mm | -40 °C up to +105 °C | – | – | – | – | – | – | ||
 | 7447016 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WE-FI Leaded Toroidal Line Choke | – | – | – | – | – | – | – | – | – | 19 | 11.1 | – | – | – | – | -40 °C up to +105 °C | – | – | – | 29 | 8 | 0.015 | |
 | 885012205055 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | – | 100 pF | 50 | – | – | – | 10 GΩ | – | – | 1 | 0.5 | 0.5 | 7" Tape & Reel | ±10% | 0402 | -55 °C up to +125 °C | 2.5 | X7R Class II | 0.25 | – | – | – | ||
| 750318019 | SPEC | – | – | Active i| Production is active. Expected lifetime: >10 years. | Common Mode Choke | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 890324024005 | SPEC | |
| 7447016 | SPEC | – |
| 885012205055 | SPEC | |
| 750318019 | SPEC | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | Application | C | VR (V (AC)) | Safety Class | dV/dt (V/µs) | DF @ 1 kHz (%) | RISO | Operating Temperature | 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 |
|---|