IR21571SPBF

Lighting, Ballast Controllers Overview

The IR21571SPBF is a fully integrated ballast control IC designed for electronic ballasts. It features a 600V high-side gate driver and supports operating frequencies between 45.5kHz and 50.5kHz with a supply voltage range of 10.5V to 16.5V. The device includes programmable parameters for warm-up time, frequency, dead-time, and dimming. Integrated protections cover lamp filament detection, undervoltage, thermal overload, and ignition failure. It operates within a temperature range of -40°C to 125°C in an SOIC-16 package.

Lighting, Ballast Controllers Feature Summary

• Fully integrated ballast control IC with built-in 600V level-shifted gate driver
• Supports programmable warm-up duration, operating frequency, and dead-time settings
• Includes comprehensive protection mechanisms such as filament detection and thermal overload shutdown
• Features automatic restart capability and micro-power startup functionality

Lighting, Ballast Controllers Applications

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

Lighting, Ballast Controllers Procurement Notes

Verify the specific suffix 'SPBF' against official Infineon documentation to confirm lead-free status and RoHS compliance. Ensure the ordering part number matches the exact package type required for your PCB layout. Cross-reference the datasheet revision date to confirm current manufacturing status and any potential design changes.

Lighting, Ballast Controllers Selection Notes

Select this component for applications requiring a single-chip solution for rapid-start fluorescent or HID ballasts. It is suitable for designs needing integrated high-voltage driving capabilities without external level shifters. Consider its programmable features for optimizing lamp life and performance. Verify that the 600V rating aligns with the peak voltages in your resonant circuit design.

Lighting, Ballast Controllers Part Context

Originally developed by International Rectifier before its acquisition by Infineon Technologies, the IR21571 remains a key product in the lighting control portfolio. It represents a transition from discrete solutions to highly integrated ICs for ballast applications. The SPBF designation indicates a specific packaging and environmental compliance variant within the broader IR21571 family.

Lighting, Ballast Controllers Replacement Considerations

Consult official Infineon substitution guides for verified alternatives. Generic replacements may lack the specific integrated protections or voltage ratings required for safe operation in high-voltage ballast circuits.