To unroute (or ripup) a complete board, first activate the ripup tool by clicking the ripup icon, or run command ripup; Then, click the ‘go’ button in the top of the Eagle window to ripup all signals:
ICE5QSAG: Infineon latest 5 th generation quasi-resonant flyback PWM controller offers high performance and comprehensive suite of protection to increase system robustness. VCC: 10.4~24V Freq: 20k~ VCC Turn-on Threshold Voltage: 16V VCC Turn-off Threshold Voltage :10V Maximum on time in normal operation: 35us Maximumoff time in normal operation :42.5us