CS1601-FSZR

Overview

The CS1601-FSZR is a digital power factor correction (PFC) controller designed for electronic ballast applications. It operates in variable frequency discontinuous conduction mode (VF-DCM) with zero-current switching to optimize total harmonic distortion (THD) and minimize magnetic component size. The device integrates feedback compensation and comprehensive safety features, including undervoltage lockout, output overvoltage protection, cycle-by-cycle current limiting, input voltage brownout protection, open/short loop protection, and thermal shutdown.

Feature Summary

• Digital EMI noise shaping reduces conducted electromagnetic interference
• Adaptive switching frequency control minimizes boost inductor size
• Integrated feedback compensation simplifies system design

Applications

• LED power supply/driver
• Fluorescent ballasts
• HID ballasts

Procurement Notes

Verify the specific suffix FSZR against official documentation to confirm packaging details. Confirm availability status as distribution channels may list obsolete or limited stock items. Ensure compliance with RoHS and REACH requirements by checking the manufacturer's certificate of conformity. Validate that the component meets the required operating temperature range for the intended application environment before procurement.

Selection Notes

Select this controller for designs requiring low PFC system cost and best-in-class THD performance. The VF-DCM operation with zero-current switching is suitable for minimizing magnetic component volume. Consider the integrated safety protections and adaptive frequency control when designing systems where efficiency and component count are critical constraints.

Part Context

The CS1601 series consists of digital PFC controllers optimized for electronic ballasts. The CS1601 variant supports switching frequencies up to 70kHz, while the CS1601H supports up to 100kHz. These devices utilize digital signal processing to achieve high efficiency and reduced electromagnetic interference compared to traditional boundary mode controllers.

Replacement Considerations

Public confirmed substitute part numbers are not available.