CS1600-FSZ

Overview

The CS1600-FSZ is a high-performance Variable Frequency Discontinuous Conduction Mode (VF-DCM) active Power Factor Correction (PFC) controller manufactured by Cirrus Logic. It is specifically optimized to deliver the lowest PFC system cost for electronic ballast applications. The device utilizes digital noise shaping to reduce EMI signatures and incorporates integrated feedback compensation. Key protection features include overvoltage protection with hysteresis, overpower protection with shutdown, UVLO with wide hysteresis, and thermal shutdown with hysteresis.

Feature Summary

• Variable Frequency Discontinuous Conduction Mode operation
• Digital noise shaping for EMI signature reduction
• Integrated feedback compensation
• Comprehensive protection mechanisms including overvoltage, overpower, UVLO, and thermal shutdown

Applications

• Electronic ballasts

Procurement Notes

Verify the specific suffix FSZ against official datasheets to confirm package type and lead-free status. Ensure compatibility with existing electronic ballast designs requiring VF-DCM PFC control. Confirm RoHS compliance and environmental certifications as per current manufacturer specifications before procurement.

Selection Notes

Select this component for electronic ballast designs prioritizing minimal system cost and reduced electromagnetic interference. The integrated compensation and variable frequency operation simplify design complexity. Evaluate thermal management requirements due to the integrated thermal shutdown feature and ensure the application supports the discontinuous conduction mode architecture.

Part Context

The CS1600 series represents Cirrus Logic's solution for cost-effective power factor correction in lighting applications. The CS1600-FSZ variant is part of this family, designed to replace traditional PFC controllers with a more efficient and EMI-friendly alternative tailored for the stringent requirements of modern electronic ballasts.

Replacement Considerations

Check for direct pin-compatible alternatives within the CS1600 family or other VF-DCM controllers from Cirrus Logic. Verify that any substitute maintains the same protection thresholds and digital noise shaping characteristics to ensure identical EMI performance.