STRM6529

The STR-M6529 is specifically designed to meet the requirement  for increased integration and reliability in off-line flyback converters operating in the quasi-resonant ringing choke mode.  The STR-M6529 incorporates the primary control and drive circuit with a discrete ava- lanche-rated high-voltage power MOSFET.

Crucial system parameters such as maximum ON time and OFF time are fixed during manufacture.  Local control circuit decoupling and layout are optimized within the device.

Cycle-by-cycle current limiting, soft start, under-voltage lock-out with hysteresis, over-voltage protection, and thermal shutdown protect the devices during all normal and overload conditions.  Over-voltage protection, thermal shutdown, or an external fault signal are latched. The dual requirements of dielectric isolation and low transient thermal impedance and steady-state thermal resistance are satisfied in an over- molded single-in-line power package.

Proven in substantial volumes, this STR-M6529  and its fixed-frequency counterparts represents a significant advance in off-line SMPS reliabilityv growth and integration.