Resonant Mode (LLC) Controllers
Overview
Microsemi's Resonant Mode LLC Half-Bridge Controllers offer higher efficiency, power density and component density than possibly achievable with Switching Regulators, and with considerable lower noise. For more details, see the Application Note Understanding and using LLC Converters to Great Advantage.
Feature | LX27901 | LX27902IDW | LX27912IDW |
Efficiency, non-synchronous (AC to 12VDC, 5A) | ~93% | ~93% | ~93% |
Efficiency, synchronous (AC to 12VDC, 5A) | ~95% | ~95% | ~95% |
Regulated Outputs | 1 | 1 (primary) 2 (secondary) |
1 (primary) 2 (secondary) |
Frequency (kHz) | 140-1000 | 150-1000 | 150-1000 |
Duty Cycle (%) | 50 | 50 | 50 |
Output Driver (mA) | 800 | 600 | 600 |
Current Sense (mV) | 421 | 410 | 410 |
Current Sense Input Signal accuracy (%) | 6 | 2 | 2 |
Max Start-up Current (uA) | <40 | <40 | <40 |
Synchronous Rectification | Yes | Yes | Yes |
External Synchronization | Yes | Yes | Yes |
Pulse Skipping on Standby | No | Yes | No |
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