Integrated power management IC with 650V avalanche rugged CoolMOS™, startup cell and QR current mode flyback PWM controller. Capable for 26W SMPS design. The quasi QR CoolSET™ series continues to deliver design agility and miniaturization. The digital frequency reduction feature score a very stable operation with decreasing load change, and the fold-back correction keep the maximum power limits within tolerance desired by SMPS designers.