IR21571PBF

Lighting, Ballast Controllers Overview

The IR21571PBF is a fully integrated ballast control IC designed for electronic ballasts. It features a 600V high-voltage half-bridge driver with an integrated bootstrap diode and 15.6V Zener clamp. The device supports operating frequencies between 45.5kHz and 50.5kHz with a supply voltage range of 10.5V to 16.5V. Key electrical parameters include a maximum output current of 0.5A, a minimum operating temperature of -40°C, and a maximum operating temperature of +125°C.

Lighting, Ballast Controllers Feature Summary

• Fully integrated ballast control solution with built-in protection mechanisms
• Integrated 600V level-shifted gate driver supporting high-side switching
• Programmable parameters including预热 time, operating frequency, and dead-time
• Comprehensive fault protection including lamp detection and thermal overload

Lighting, Ballast Controllers Applications

• Electronic ballasts for fluorescent lamps
• High-intensity discharge (HID) lamp drivers
• Straight-tube ballast configurations
• Dual-lamp parallel or series arrangements

Lighting, Ballast Controllers Procurement Notes

Verify the specific suffix PBF indicates lead-free compliance and RoHS status against the official datasheet. Confirm the package type matches the required PCB footprint. Check the lifecycle status as older IR products may be NRND. Ensure the supplier provides valid traceability documentation for automotive or industrial applications if required by the design specification.

Lighting, Ballast Controllers Selection Notes

Select this component when a single-chip solution for fluorescent or HID ballasts is required. It integrates the oscillator, driver, and protection logic, reducing external component count. Suitable for designs needing programmable warm-up sequences and dimming interfaces. Verify that the 600V rating meets the bus voltage requirements of the target application topology.

Lighting, Ballast Controllers Part Context

Originally developed by International Rectifier before its acquisition by Infineon Technologies. The IR21571 series represents a generation of integrated ballast controllers designed to simplify the design of lighting electronics. It consolidates functions previously requiring multiple discrete components into a single SOIC or PDIP package.

Lighting, Ballast Controllers Replacement Considerations

Consult official Infineon replacement guides for direct equivalents. Cross-reference with other IR215xx series variants if pin compatibility or specific timing parameters differ. Verify functional equivalence regarding the integrated Zener clamp voltage and maximum output current capabilities.