INN4174C-H187-TL

AC DC Converters, Offline Switchers Overview

The INN4174C-H187-TL is a highly integrated AC-DC switcher IC from Power Integrations' InnoSwitch3-CP family, designed for compact offline power supplies. It combines a high-voltage MOSFET with primary-side regulation and control logic in a single package. The device supports constant voltage and constant current outputs without requiring an optocoupler or secondary-side feedback components. Key electrical parameters include a maximum drain-source voltage of 650V, a peak switching frequency up to 132kHz, and operation within a wide input voltage range. It features built-in protection mechanisms such as over-voltage, over-current, and thermal shutdown.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 650V MOSFET with primary-side regulation for simplified design
• Eliminates the need for optocouplers and secondary-side feedback circuits
• Provides precise constant voltage and constant current output control
• Includes comprehensive protection features for enhanced system reliability

AC DC Converters, Offline Switchers Applications

• Adapters for mobile devices and consumer electronics
• Battery chargers for portable equipment
• Low-power industrial power supplies
• LED lighting drivers
• USB charging stations

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix (H187-TL) against the manufacturer's latest datasheet to confirm tape-and-reel packaging and temperature grade. Ensure compatibility with your PCB footprint and thermal management requirements. Cross-reference part numbers with authorized distributors to avoid counterfeit components. Confirm that the selected variant meets all regulatory compliance standards for your target market.

AC DC Converters, Offline Switchers Selection Notes

Choose this component when space constraints and bill-of-materials reduction are critical priorities. It is suitable for applications requiring isolated outputs with tight regulation tolerances. Consider its efficiency profile at light loads if energy conservation is a key requirement. Evaluate thermal performance under maximum load conditions to ensure adequate heat dissipation within the enclosure.

AC DC Converters, Offline Switchers Part Context

This part belongs to the InnoSwitch3-CP series, which represents an evolution in integrated power conversion technology. It builds upon previous generations by offering improved efficiency and reduced external component count. The family is widely adopted in modern consumer electronics due to its compact form factor and robust performance characteristics across various operating conditions.

AC DC Converters, Offline Switchers Replacement Considerations

Direct replacements may include other InnoSwitch3 variants with similar voltage ratings and pinout configurations. Verify functional equivalence regarding control logic and protection thresholds before substitution. Consult official cross-reference guides provided by Power Integrations for validated alternative part numbers.