SF5588 is a high performance, highly integrated current mode PWM power switch for offline flyback power converter applications.  bdx嘉泰姆

   In SF5588, PWM switching frequency with shuffling is fixed to 65KHz and is trimmed to tight range. When the output power demands decrease, the IC decreases switching frequency based on the proprietaryη-BalanceTM control to boost power conversion efficiency at the light load. SF5588 also integrates proprietary HV-mWTM technology to achieve less than 30mW standby power. bdx嘉泰姆

SF5588 can achieve "Zero OCP/OPP Recovery Gap" using SiFirst's proprietary control algorithm. SF5588 also has built in proprietary "Audio Noise Free OCP Compensation", which can achieve constant power limiting and can achieve audio noise operation at heavy loading when line input is around 90VAC. bdx嘉泰姆

SF5588 integrates functions and protections of Under Voltage Lockout (UVLO), VCC Over Voltage Protection (OVP), Cycle-by-cycle Current Limiting (OCP), Pin Floating Protection, Over Load Protection (OLP), Soft Start, VCC Clamping, etc. In SF5588, VDD OVP is Latch Plug-off protection. The other protection functions are auto-recovery mode protection.  bdx嘉泰姆

 SF5588 is available in DIP8 package.bdx嘉泰姆