Control ic simplifies design, reduces part count
International Rectifier has announced the IRS2983, a control ic for single stage Flyback and buck boost topologies used in led drivers and power supplies.
The IRS2983 employs primary side regulation that reduces component count and simplifies design by eliminating the opto-isolator and other components necessary for isolated feedback for fixed loads.
It also features a rapid startup circuit that is said to reduce the turn on time of the system.
The device offers high power factor and low THD and operates over a wide input range for many led lighting applications. Comprehensive protection features including hiccup mode over-voltage protection, cycle by cycle over-current protection and open and short circuit protection are also included. The device also supports TRIAC dimming.
Other key features include critical conduction mode operation, with discontinuous and burst modes at light load as well as flexibility allowing easy connection opto-isolated feedback circuitry for more complex designs.
