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Overview
| Topology | LLC Resonant Converter |
| Input voltage | 380-420 V |
| Switching frequency | 35-1000 kHz |
| Output 1 | 48 V / 11.45 A |
| IC revision | B |
Description
This resonant converter reference design takes a 380-V to 420-V DC input and generates a 48-V up to 550-W output. With the UCC256302 driver-integrated resonant converter controller and UCC24624, a two-channel synchronous rectifier (SR) driver, this design can achieve 97.95% peak efficiency.
Features
- Integrated High Voltage Startup– Eliminates Need for External Bias Supply
- Best-in-Class Transient Response
- Hybrid Hysteretic Control (HHC)– Best-in-Class Transient Response– Easy Compensation Design
- Optimized Low Power Features Enable 75 mW Standby Power Design with PFC on– Advanced Burst Mode
- Opto-Coupler Low Power Operation– Helps Enable Compliance to CoC Tier II Standard
- Fast Exit from Burst Mode
- Improved Capacitive Region Avoidance Scheme
- Adaptive Dead-Time
- Internal High-Side Gate Drivers (0.6-A and 1.2-A Capability)
- Robust Soft Start with No Hard Switching
- Over Temperature, Output Over Voltage, Input Over and Under Voltage Protection with Three Levels of Over Current Protections
- Wide Operating Frequency Range (35 kHz to 1 MHz)
Typical applications
- Industrial AC-DC
- AC-DC Adapter / Merchant DC-to-DC / DIN Rail Power Supply
- Multi-Functional Printers / Projectors / ATX Power Supply
- Multi-Axis Servo
- Digital TV SMPS / Appliances
- LED Lighting Applications
- High Power Battery Charging
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | VR(V (DC)) | 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) | Endurance(h) | IRIPPLE(mA) | ILeak(µA) | Ø D(mm) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 16 V(DC), 10 nF, 16 V (DC) | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 16 V(DC) | Capacitance10 nF | Rated Voltage16 V (DC) | – | – | Insulation Resistance10 GΩ | – | Length1.6 mm | Width0.8 mm | Height0.8 mm | Packaging7" Tape & Reel | Capacitance±10% | Size0603 | Operating Temperature -55 °C up to +125 °C | Dissipation Factor3.5 % | Ceramic TypeX7R Class II | Pad Dimension0.4 mm | – | – | – | – | |||||
 | WCAP-FTBP Film Capacitors, 68 nF, 630 V (DC) | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-FTBP Film Capacitors | Capacitance68 nF | Rated Voltage630 V (DC) | Rate of Voltage Rise240 V/µs | Dissipation Factor0.1 % | Insulation Resistance30 GΩ | Pitch15 mm | Length18 mm | Width6 mm | Height12 mm | PackagingCarton | Capacitance±5% | SizePitch 15 mm | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | – | – | ||||
| WCAP-CSGP MLCCs 16 V(DC), 2.2 µF, 16 V (DC) | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-CSGP MLCCs 16 V(DC) | Capacitance2.2 µF | Rated Voltage16 V (DC) | – | – | Insulation Resistance0.05 GΩ | – | Length1.6 mm | Width0.8 mm | Height0.8 mm | Packaging7" Tape & Reel | Capacitance±20% | Size0603 | Operating Temperature -55 °C up to +85 °C | Dissipation Factor10 % | Ceramic TypeX5R Class II | Pad Dimension0.4 mm | – | – | – | – | |||||
 | WCAP-AT1H Aluminum Electrolytic Capacitors, 100 µF, 450 V (DC) | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-AT1H Aluminum Electrolytic Capacitors | Capacitance100 µF | Rated Voltage450 V (DC) | – | – | – | Pitch7.5 mm | Length35.5 mm | – | – | PackagingAmmopack | Capacitance±20% | Size16.0 x 35.5 | – | Dissipation Factor17 % | – | – | Endurance 5000 | Ripple Current610 mA | Leakage Current1900 µA | Diameter16 mm | ||||
 | WCAP-ATLI Aluminum Electrolytic Capacitors, 220 µF, 35 V (DC) | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-ATLI Aluminum Electrolytic Capacitors | Capacitance220 µF | Rated Voltage35 V (DC) | – | – | – | Pitch5 mm | Length12.5 mm | – | – | PackagingAmmopack | Capacitance±20% | – | – | Dissipation Factor9 % | – | – | Endurance 5000 | Ripple Current1060 mA | Leakage Current77 µA | Diameter10 mm | ||||
 | WCAP-ATUL Aluminum Electrolytic Capacitors, 680 µF, 35 V (DC) | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-ATUL Aluminum Electrolytic Capacitors | Capacitance680 µF | Rated Voltage35 V (DC) | – | – | – | Pitch5 mm | Length30 mm | – | – | PackagingAmmopack | Capacitance±20% | – | – | Dissipation Factor12 % | – | – | Endurance 7000 | Ripple Current2000 mA | Leakage Current238 µA | Diameter10 mm |