STR-Y6754

Quasi-Resonant Controllers with Integrated Power MOSFET STR-Y6700 Series General Descriptions The STR-Y6700 series are power ICs for switching power supplies, incorporating a MOSFET and a quasi-resonant controller IC. Including an auto standby function in the controller, the product achieves the low standby power by the automatic switching between the PWM operation in normal operation, one bottom-skip operation under medium to light load conditions and the burst-oscillation under light load conditions. The product achieves high cost-performance power supply systems with few external components. Features Multi-mode Control The optimum operation depending on load conditions is changed automatically and is achieved high efficiency operation across the full range of loads. Operation Mode Normal load -------------------------Quasi-resonant mode Medium to light load -------------One bottom-skip mode Light load -------------------------- Burst oscillation mode (Auto standby function) No load power consumption PIN < 30 mW (100VAC) PIN < 50 mW (230VAC) Leading Edge Blanking Function Bias Assist Function Built-in startup circuit reduces Protections Overcurrent Protection 1 (OCP1): Pulse-by-Pulse, with Input Compensation Function Overcurrent Protection 2 (OCP2)(1): Latched shutdown Overload Protection (OLP): Latched shutdown Overvoltage Protection (OVP): Latched shutdown Thermal Shutdown Protection (TSD): Latched shutdown (1) Products with the last letter "A" don’t have the...