SiFirst SF1560
SF1560 is a high performance, highly integrated current mode PWM controller for medium to large offline flyback converter applications. The IC also integrates Constant Power Limiting block to achieve constant output power limit from 90VAC to 264VAC. SF1560 is available in SOP-8 and DIP-8 packages.| Part No. | SF1560 |
|---|---|
| Datasheet | SF1560 Download |
| Manufacturer | SiFirst |
| Description | Highly Integrated Current Mode PWM Controller |
| Buy | Stock & Price |
APPLICATIONS
Offline AC/DC Flyback Converter for● AC/DC Power Adaptors
● Open-frame SMPS
● Print Power, Scanners, and Motor Drivers
GENERAL DESCRIPTION
In SF1560, the PWM switching is internally trimmed to tight range. To improve EMI performance, the IC integrates frequency shuffling function to reduce conduction EMI emission of a power supply. Under light load conditions, a green mode function can continuously decrease the switching frequency. Under zero-load conditions, the power supply enters into burst mode and provides excellent efficiency without audio noise generated. This green mode function enables power supplies to meet international power conservation requirements. SF1560 integrates functions and protections of Under Voltage Lockout (UVLO), VDD Over Voltage Protection (OVP), Soft Start, External Programmable Over Temperature Protection (OTP), Cycle-by-cycle Current Limiting (OCP), Over Load Protection (OLP), All Pins Floating Protection, RI Pin Short-to-GND Protection, GATE Clamping, VDD Clamping, Leading Edge Blanking (LEB).