ZA9673-BED

Overview

The Coilcraft ZA9673-BED is a surface-mount flyback transformer designed for no-optocoupler DC/DC converter applications, specifically optimized for Texas Instruments' LM25184 controller. It features a 1500Vrms isolation voltage and operates at a switching frequency of 300 kHz. The component supports an input voltage range of 4 V to 42 V and provides a 24 V output with a current capacity of 0.5 A, delivering up to 12 W of power. Primary inductance is specified at 7 μH measured at 300 kHz with 0.1 Vrms excitation.

Feature Summary

• Optimized for no-optocoupler flyback converter designs using the TI LM25184 chipset
• Provides high-voltage isolation rated at 1500Vrms between primary and secondary windings
• Supports surface mount assembly with RoHS compliance and 260°C thermal compatibility

Applications

• Flyback converters utilizing Texas Instruments LM25184 controllers
• DC/DC conversion circuits requiring galvanic isolation
• Power supplies operating within 4 V to 42 V input ranges

Procurement Notes

Verify that the ordering suffix matches the required packaging configuration, as the 'D' suffix indicates a 13-inch reel format. Confirm that the specific output version aligns with the target design requirements for the LM25184 application. Ensure that the component meets all necessary regulatory standards for the intended end-use environment before finalizing procurement orders.

Selection Notes

Select this component when designing isolated power stages based on the LM25184 architecture. The ZA9673-BED is tailored for 24 V output applications; other variants in the series support different voltage levels. Consider the physical footprint dimensions and inductance tolerances during PCB layout to ensure proper magnetic coupling and thermal performance within the system constraints.

Part Context

This part belongs to the ZA967x family of no-opto flyback transformers manufactured by Coilcraft. The series includes multiple output versions (ZA9670 through ZA9674) engineered specifically for integration with Texas Instruments' LM25184 synchronous rectifier flyback controller. These components streamline design efforts by providing pre-optimized magnetic solutions for common industrial and commercial power supply topologies.

Replacement Considerations

Direct substitutes within the same family include ZA9670-BED, ZA9671-BED, ZA9672-BED, and ZA9674-BED. These alternatives share identical mechanical footprints and isolation ratings but differ in output voltage specifications. Verify that the replacement variant matches the required secondary voltage for the specific LM25184 application circuit.