PFC-50A-12
50A 1200V IGBT module optimized for power factor correction applications with fast switching and low switching losses.
Product Overview
Description
The PFC-50A-12 is a 50A 1200V IGBT module specifically designed for power factor correction and boost converter applications.
Optimized for hard-switching with fast switching characteristics and low switching losses.
Features low Qrr freewheeling diode for reduced diode recovery losses in bridgeless PFC applications.
Product Series
PFC
Primary Application
Power factor correction
Key Features
- Optimized for PFC applications
- Fast switching with low losses
- Low Qrr freewheeling diode
- Soft switching characteristics
- 10μs short-circuit withstand
- Integrated temperature sensor
Specifications
| Voltage Rating | 1200V |
|---|---|
| Current Rating | 50A @ Tc=80°C |
| Vce(sat) | 1.85V typical @ 50A |
| Switching Loss | Eon=3.2mJ, Eoff=4.1mJ @ 600V/50A |
| Package | Standard 34mm half-bridge |
| Isolation | 2500Vrms |
Applications
Power factor correction
Electronic system design
Boost converters
Power conversion and supply
Solar boost stages
Renewable energy systems
UPS rectifiers
Electronic system design
Battery chargers
Battery and charging management
FAE Expert Insights
"The PFC-50A-12 is specifically optimized for PFC applications, and it shows in the performance. I've used this module in several high-power PFC designs (10-20kW range) and the efficiency numbers are excellent. The fast switching characteristics enable operation at 30-40kHz with reasonable losses, allowing smaller magnetic components. The low Qrr diode is critical for bridgeless totem-pole PFC designs where diode recovery losses can dominate. In a recent 15kW server power supply design, this module achieved 99.1% PFC efficiency at full load and 50kHz switching. The soft switching characteristics also help with EMI - easier to meet CISPR standards. For high-power PFC applications, this module offers an excellent balance of performance and cost."
Purpose-built for PFC with excellent efficiency at high switching frequencies
— Chen Jun, BeiLuo
Frequently Asked Questions
What switching frequency is optimal for PFC-50A-12?
Optimal switching frequencies for PFC-50A-12: Standard PFC: 20-30kHz for good balance of efficiency and magnetic size; High-density designs: 40-60kHz for smaller magnetics; Bridgeless totem-pole: 50-100kHz (SiC recommended for >50kHz). At 30kHz with 400V output and 50A input, total losses are approximately 120W. Trade-offs: Lower frequency (20kHz) - higher efficiency, larger inductor, audible noise possible; Higher frequency (60kHz) - smaller inductor, lower efficiency, better power density. For server power supplies targeting 80Plus Titanium, 40-50kHz is typical. The module's fast switching enables these higher frequencies while maintaining good efficiency.
Contact us for PFC design optimization and magnetic component selection.
How does PFC-50A-12 compare to SiC MOSFETs for PFC?
PFC-50A-12 vs SiC comparison for PFC: Efficiency - SiC offers 0.3-0.5% higher efficiency at same frequency; Frequency - SiC can switch at 2-3x higher frequency with reasonable losses; Cost - IGBT is 2-3x lower cost per amp; Complexity - IGBT gate drive is simpler and more mature; Inductor size - SiC enables 30-50% smaller inductor at high frequency. Decision factors: For cost-sensitive applications (<15kW): IGBT is usually better choice; For high-density designs: SiC may justify higher cost; For >50kHz operation: SiC is preferred; For 99%+ efficiency targets: SiC is necessary. Many designs use IGBT for standard PFC and SiC for bridgeless totem-pole PFC where diode recovery is critical.
Contact us for detailed comparison and PFC topology recommendations.
What is the diode recovery performance of PFC-50A-12?
Diode characteristics of PFC-50A-12: Qrr (reverse recovery charge): 3.5μC typical at 125°C; trr (reverse recovery time): 120ns typical; Irrm (peak reverse current): 12A typical; Softness factor: >0.8 for soft recovery. These characteristics are optimized for PFC applications: Low Qrr reduces switching losses in hard-switched bridge configurations; Soft recovery reduces EMI and voltage overshoot; Fast recovery enables higher switching frequencies. For standard boost PFC, these diodes perform well. For bridgeless totem-pole PFC where diodes conduct continuously during half-line cycle, SiC Schottky diodes are recommended for best efficiency. The integrated diode is sufficient for most standard PFC applications.
Contact us for diode selection in bridgeless PFC applications.
Can PFC-50A-12 be used in interleaved PFC designs?
Yes, PFC-50A-12 is well-suited for interleaved PFC designs: Benefits of interleaving: Reduced input/output ripple current; Smaller magnetic components; Better thermal distribution; Higher effective switching frequency. Configuration options: 2-phase interleaved - use 2 modules, 180° phase shift; 3-phase interleaved - use 3 modules, 120° phase shift. Current per module is total current divided by number of phases. For a 15kW PFC with 2-phase interleaving: Total current ~38A RMS, 19A per phase, well within 50A rating. Interleaving control requires current balancing between phases. PineSemi modules work well with standard interleaved PFC controllers. Thermal design is easier as losses are distributed across multiple modules.
Contact us for interleaved PFC design guidelines and control strategies.
What protection features are needed for PFC applications?
Essential protection for PFC using PFC-50A-12: Overcurrent protection - desaturation detection or current sensing, < 10μs response; Overvoltage protection - output overvoltage detection to prevent capacitor damage; Overtemperature protection - use integrated NTC sensor, shutdown at 125°C heatsink; Inrush current limiting - soft-start or NTC thermistor for startup; Input undervoltage/overvoltage - protect from abnormal line conditions. Additional considerations: Reverse recovery protection - ensure adequate dead time to prevent shoot-through; Surge protection - MOV or TVS for lightning surge protection; Fuse protection - fast-acting fuses for catastrophic failure protection. PFC controllers typically integrate many protection features. External protection circuits should be designed with appropriate margins.
Contact us for PFC protection design guidelines and recommended components.