Overview
The CS1601 and CS1601H are digital power factor correction (PFC) controllers designed to deliver the lowest PFC system cost in electronic ballast applications. The controller operates in a variable frequency discontinuous conduction mode (VF-DCM) with zero-current switching (ZCS) optimized to deliver best-in-class THD and minimize the size and cost of magnetic components. The CS1601 operates at switching frequencies up to 70kHz while the CS1601H operates at frequencies extending to 100kHz.

FEATUREs
❐ Low PFC System Cost
❐ Best-in-class THD
❐ Digital EMI Noise Shaping Reduces Conducted EMI
❐ Adaptive Switching Frequency Control Minimizes Boost Inductor Size
❐ High Efficiency Due to Zero-current Switching
❐ Integrated Feedback Compensation Simplifies System Design
❐ Comprehensive Safety Features
    • Undervoltage Lockout (UVLO)
    • Output Overvoltage Protection
    • Cycle-by-cycle Current Limiting
    • Input Voltage Brownout Protection
    • Open/Short Loop Protection for IAC & IFB Pins
    • Thermal Shutdown
❐ Pin placement similar to traditional boundary mode (CRM) Controllers

APPLICATIONs
❐ LED Power Supply/Driver
❐ Fluorescent Ballasts
❐ HID Ballasts