ICE2QS03, Quasi-Resonant PWM Controller IC, DIP-8 Package Type

The ICE2QS03 is a Quasi-Resonant PWM Controller IC from Infineon Technologies, built for offline switched-mode power supply (SMPS) applications. Designed specifically for use in flyback converters, it integrates energy-saving features and protection mechanisms to enhance both efficiency and safety in low- and mid-power AC-DC designs. The controller enables quasi-resonant switching by detecting valley points of the drain voltage, thereby reducing switching losses and electromagnetic interference (EMI).

Key Features:

• Quasi-resonant switching for improved efficiency
• Integrated high-voltage startup cell
• Adjustable brownout protection
• Frequency jittering for EMI reduction
• Cycle-by-cycle current limitation
• Designed for off-line SMPS applications (flyback topology)

Additional Specifications:

• Package Type: DIP-8
• Supply Voltage: 10.5V to 26V
• Current: 2.5 mA
• Type: Quasi-Resonant PWM Controller