| Part Number | SF5920S |
| Manufacturer | SiFirst |
| Title | High Performance Primary Side Regulation (PSR) CV/CC Controller |
| Description | SF5920S High Performance Primary Side Regulation (PSR) CV/CC Controller FEATURES ◆ Multi-Mode Control ◆ Max. Frequency Clamping to Limit Power... |
| Features |
◆ Multi-Mode Control
◆ Max. Frequency Clamping to Limit Power
MOSFET Vds Spike @ Output Short Circuit
◆ Low Standby Power Under 70mW, Easily to
Pass Energy Star EPS2.0
◆ Audio Noise Free Operation
◆ Primary Side Regulation (PSR) without TL431
and Opto-Coupler
◆ ± 5% Constant Current (CC) an...
|
| File Size | 526.54KB |
| Datasheet |
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SF5920 : SF5920 is a high performance, highly integrated DCM (Discontinuous Conduction Mode) Primary Side Regulation (PSR) controller for offline small power converter applications. SF5920 uses Pulse Frequency Modulation (PFM) control to improve efficiency and eases system EMI design. The IC dramatically lowers system cost by eliminating the opto-coupler and secondary control circuits. It also can provide very tight output voltage regulation (CV), in addition to output current control (CC) ideal for charging applications. SF5920 has built-in proprietary NC-Cap/PSRTM control for CV control, which eliminates external compensation or filtering capacitor. It also has built-in proprietary cable drop compe.