onsemi NCP43080 Synchronous Rectifier Controllers
onsemi NCP43080 is a synchronous rectifier controller for switch mode power supplies. The flexibility to drive assorted MOSFET package types and PCB layout are controlled by externally adjustable minimum off-time and on-time blanking periods. The SR system that is both reliable and noise less is protected due to the self-synchronization feature.
The onsemi NCP43080 controller permits high-efficiency designs for flyback and quasi-resonant flyback topologies. The NCP43080 synchronous rectifier controller also applies a Kelvin connection of the driver to the MOSFET to achieve high-efficiency operation at full load. This utilizes a light load detection architecture to achieve high efficiency at light load.
Features
- Self-contained control of synchronous rectifier in CCM, DCM, and QR for Flyback, Forward or LLC applications
- Precise true secondary zero current detection
- Rugged current sense pin (up to 150V)
- Adjustable minimum ON-time
- Adjustable minimum OFF-time with ringing detection
- Adjustable maximum ON-time for CCM controlling of primary QR controller
- 8A/4A peak current sink/source drive capability
- Improved robust self-synchronization capability
- Operating voltage range up to VCC=35V
- Automatic light-load and disable mode
- Adaptive gate drive clamp
- GaN transistor driving capability (options A and C)
- Low startup and disable current consumption
- Maximum operation frequency up to 1MHz
- SOIC-8 and DFN−8 (4x4) and WDFN8 (2x2) packages
- Pb−free
Applications
- Notebook adapters
- High power density AC/DC power supplies (cell phone chargers)
- LCD TVs
- All SMPS with high-efficiency requirements
Publié le: 2017-01-25
| Mis à jour le: 2025-07-31