Skip to content 
Project Background:
LED driver power supplies typically operate in a high-frequency switching mode (50 kHz–200 kHz), making them highly sensitive to the switching losses and costs of rectifier diodes. The client is seeking a more cost-effective rectification solution that maintains efficiency and service life.
Product Models Used:
• Schottky diodes (e.g., SS, SB, and MBR series)—used for rectification at the low-voltage output stage of LED drivers; low forward voltage (VF) characteristics directly determine the overall efficiency of the LED luminaire.
• Fast-recovery diodes—used for PFC and high-side rectification.
Typical selection logic:
| Voltage Platform | Recommended Product Types | Selection Rationale |
| Low-voltage platform (≤60V) | Schottky Diodes | Low VF minimizes conduction losses and offers the best cost-performance ratio |
| Medium-voltage platform (60V–200V) | Fast Recovery Diodes / FREDs | Balances switching speed with voltage rating requirements |
| High-voltage platform (≥200V) | FREDs (Ultra-fast Recovery Diodes) | Control of high-frequency switching losses is critical |
Problems Addressed:
• Traditional diode solutions suffer from low efficiency and fail to meet LED driver energy efficiency standards.
• Cost-sensitive projects require alternative components that offer an optimized balance of cost and performance.
