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Texas Instruments UCC27517ADBVR | Demoboard TIDA-010015
94.5% Efficiency, 500W industrial AC-DC reference design
Overview
| Topology | Flyback Converter |
| Input voltage | 85-265 V |
| Switching frequency | 1000 kHz |
| Output 1 | 24 V / 21 A |
| IC revision | E1 |
Description
This reference design is a compact, high efficiency, 24-V DC, 500-W reference design for industrial AC/DC power supplies. This design consists of a front-end, two-phase interleaved transition mode (TM) power factor correction (PFC) based on the UCC28064A. This minimizes the PFC inductor size and reduces EMI filter requirements. The DC-DC is implemented using the HB-LLC stage implemented using TI's UCC256301 device. For efficiency improvement, synchronous rectification is used at secondary which uses the UCC24612.
Features
- Overall efficiency of 94.5% at full load with peak efficiency > 95%
- Up to 330-W operation without forced cooling
- High power factor > 0.99 and meets PFC regulations and current THD as per IEC 61000-3- 2 Class A
- Meets requirements of conducted emissions standard (EN55011 Class B)
- ZCS avoidance feature and OVP sensing feature in LLC controller improves robustness and protects systems from overcurrent, short circuit, and overvoltage to ensure safety
- Small 160 mm × 80 mm × 35 mm PCB form factor
Typical applications
- Industrial AC/DC
- Consumer AC/DC
- DIN rail power supply
- Battery charger
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | Size | Operating Temperature | Q(%) | RISO | Ceramic Type | Fl(mm) | Packaging | Pins | Type | G(mm) | Working Voltage(V (AC)) | IR(A) | L(mH) | RDC max.(mΩ) | VR(V (DC)) | VT(V (AC)) | Material | L(mm) | W(mm) | H(mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 16 V(DC), 100 pF, ±5% | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 16 V(DC) | Capacitance100 pF | Capacitance±5% | Size0603 | Operating Temperature -55 °C up to +125 °C | Q-Factor1000 % | Insulation Resistance10 GΩ | Ceramic TypeNP0 Class I | Pad Dimension0.4 mm | Packaging7" Tape & Reel | – | – | – | – | – | – | – | Rated Voltage16 V (DC) | – | – | Length1.6 mm | Width0.8 mm | Height0.8 mm | – | |||||
 | WE-CMBNC Common Mode Power Line Choke Nanocrystalline, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CMBNC Common Mode Power Line Choke Nanocrystalline | – | – | SizeM | Operating Temperature -55 °C up to +125 °C | – | – | – | – | – | Pins4 | – | Pin length5 mm | – | Rated Current15 A | Inductance1 mH | DC Resistance3.2 mΩ | Rated Voltage300 V (DC) | Insulation Test Voltage2100 V (AC) | MaterialNanocrystalline | Length24 mm | Width17 mm | Height25 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 | – | – | – | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | – | – | Pin length15 mm | – | Rated Current6.1 A | Inductance0.15 mH | DC Resistance45 mΩ | – | – | – | Length27.5 mm | Width13.6 mm | – | MountTHT | |||
 | WR-PHD Pin Header - Single, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | – | – | – | Operating Temperature -40 °C up to +105 °C | – | Insulation Resistance1000 MΩ | – | – | PackagingBag | Pins1 | TypeStraight | – | Working Voltage250 V (AC) | Rated Current3 A | – | – | – | – | – | Length2.54 mm | – | – | MountTHT |