STRM6511

The STR-M6511 is specifically designed to meet the requirement for ncreased integration and reliability in off-line flyback converters operat- ng in the quasi-resonant ringing choke mode.  The device incorporates he primary control and drive circuit with a discrete avalanche-rated power MOSFET.

Crucial system parameters STR-M6511 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 protec- ion, thermal shutdown, or an external fault signal are latched.  The dual equirements 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 device and its fixed-frequency counterparts represents a significant advance in off-line SMPS reliability growth and integration.  A similar off-line switching regulator, with an output rating of 800 V at 10 A, is also available.