STRG6622

The STR-G6651 is specifically designed to satisfy the requirements for increased integration and reliability in off-line quasi-resonant flyback converters.  This device incorporates the primary control and drive circuit with a discrete avalanche-rated power MOSFET.

Cycle-by-cycle current limiting, under-voltage lockout with hyster- esis, over-voltage protection, and thermal shutdown protects the power supply during the normal overload and fault conditions.  Over-voltage protection and thermal shutdown are latched after a short delay.  The latch may be reset by cycling the input supply.  Low-current startup and a low-power standby mode selected from the secondary circuit completes a comprehensive suite of features.  The device is provided in a five-pin over-molded TO-220 style package, affording dielectric isolation without compromising thermal characteristics.  Two lead forms are available (with and without the suffix '-LF') to accommodate printed wiring board layout or mechanical constraints.

Proven in substantial volumes, the STR-G6651 is a robust low-risk solution for off-line power supplies particularly where management of EMI at the source is a significant element of the system design.