INN4774C-H188-TL

AC DC Converters, Offline Switchers Overview

The INN4774C-H188-TL is an AC/DC converter from the InnoSwitch4-QR series by Power Integrations. It utilizes GaN technology and a flyback topology to deliver 170 W of output power at 380 VDC. The device operates within an input voltage range of 85 VAC to 265 VAC. Key electrical parameters include a switching frequency of 140 kHz and a quiescent supply current of 300 uA. It is housed in an InSOP-24D package, supporting surface mount installation. The component functions reliably across a temperature range of -40°C to +150°C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates primary-side control, high-voltage switch, and secondary-side detection into a single IC using PowiGaN technology.
• Employs internal FluxLink feedback for precise regulation without optocouplers or auxiliary windings.
• Features multi-mode quasi-resonant operation to optimize efficiency across varying load conditions.

AC DC Converters, Offline Switchers Applications

• High-power adapters and chargers
• Industrial power supplies
• Consumer electronics requiring compact form factors

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix H188 against official datasheets to confirm pinout and functional configuration. Confirm RoHS compliance status through manufacturer documentation. Ensure the InSOP-24D package dimensions align with PCB layout requirements. Check for regional distribution restrictions as availability may vary by location.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring high power density and simplified bill of materials. The integrated nature reduces external component count compared to discrete solutions. Consider the thermal performance limits when designing heatsinking strategies. Validate compatibility with target transformer specifications for optimal efficiency.

AC DC Converters, Offline Switchers Part Context

This part belongs to the InnoSwitch4-QR family, representing an evolution in integrated offline switcher technology. It builds upon previous generations by incorporating Gallium Nitride (GaN) switches for improved performance. The series targets applications demanding high efficiency and reduced size in power conversion systems.

AC DC Converters, Offline Switchers Replacement Considerations

INN4777C-H188-TL offers higher power capability within the same series. INN4774C-H191-TL is a variant with different packaging or configuration details. Verify pin-to-pin compatibility before substitution.