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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
- AC-DC Adapter / Merchant DC-to-DC / DIN Rail Power Supply
- Multi-Functional Printers / Projectors / ATX Power Supply
- Multi-Axis Servo
- High Power Battery Charging
- Digital TV SMPS / Appliances
- LED Lighting Applications
- Industrial AC-DC
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | VR (V (DC)) | 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) | Endurance (h) | IRIPPLE (mA) | ILeak (µA) | Ø D (mm) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 885012206040 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 16 V(DC) | 10 nF | 16 | – | – | 10 GΩ | – | – | 1.6 | 0.8 | 0.8 | 7" Tape & Reel | ±10% | 0603 | -55 °C up to +125 °C | 3.5 | X7R Class II | 0.4 | – | – | – | – | ||
 | 890303325004CS | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-FTBP Film Capacitors | 68 nF | 630 | 240 | 0.1 | 30 GΩ | -40 °C up to +105 °C | 15 | 18 | 6 | 12 | Carton | ±5% | Pitch 15 mm | -40 °C up to +105 °C | – | – | – | – | – | – | – | ||
| 885012106018 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 16 V(DC) | 2.2 µF | 16 | – | – | 0.05 GΩ | – | – | 1.6 | 0.8 | 0.8 | 7" Tape & Reel | ±20% | 0603 | -55 °C up to +85 °C | 10 | X5R Class II | 0.4 | – | – | – | – | ||
 | 860241480001 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-AT1H Aluminum Electrolytic Capacitors | 100 µF | 450 | – | – | – | -25 °C up to +105 °C | 7.5 | 35.5 | – | – | Ammopack | ±20% | 16.0 x 35.5 | – | 17 | – | – | 5000 | 610 | 1900 | 16 | ||
 | 860080575012 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-ATLI Aluminum Electrolytic Capacitors | 220 µF | 35 | – | – | – | -55 °C up to +105 °C | 5 | 12.5 | – | – | Ammopack | ±20% | – | – | 9 | – | – | 5000 | 1060 | 77 | 10 | ||
 | 860040575012 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-ATUL Aluminum Electrolytic Capacitors | 680 µF | 35 | – | – | – | -40 °C up to +105 °C | 5 | 30 | – | – | Ammopack | ±20% | – | – | 12 | – | – | 7000 | 2000 | 238 | 10 |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 885012206040 | SPEC | |
| 890303325004CS | SPEC | |
| 885012106018 | SPEC | |
| 860241480001 | SPEC | |
| 860080575012 | SPEC | |
| 860040575012 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | VR (V (DC)) | 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) | Endurance (h) | IRIPPLE (mA) | ILeak (µA) | Ø D (mm) | Samples |
|---|