MP6005 High-Efficiency Flyback/Forward Controller Monolithic Power Systems (MPS) MP6005 High-Efficiency Flyback/Forward Controller is designed as a low-cost, small, isolated solution with primary-side regulation (PSR) for flyback application. The device also provides high-efficiency secondary-side regulation (SSR) for active-clamped forward application. The MP6005 can also be used in SSR for flyback topology.