INN4276C-H184-TL

AC DC Converters, Offline Switchers Overview

The INN4276C-H184-TL is a primary-side regulation (PSR) controller from the InnoSwitch3-CP family, designed for high-efficiency offline flyback converters. It integrates a 700V power MOSFET with advanced digital control capabilities. Key electrical parameters include an operating input voltage range of 85–265 VAC and a fixed switching frequency of 66 kHz. The device supports output voltages up to 48 VDC with a maximum continuous output current capability dependent on transformer design. It features a wide load regulation range and operates within a temperature range of -40°C to +105°C junction temperature.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 700V power MOSFET with primary-side regulation to eliminate optocouplers and secondary feedback components.
• Includes proprietary Constant Voltage/Constant Current (CV/CC) control loops for precise output regulation without secondary sensing.
• Features advanced protection mechanisms including over-voltage, over-current, and thermal shutdown for robust operation.

AC DC Converters, Offline Switchers Applications

• High-density AC-DC adapters for mobile devices and consumer electronics
• Battery chargers for portable equipment requiring tight voltage regulation
• Standby power supplies for televisions and set-top boxes

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix H184-TL against the manufacturer's latest datasheet to confirm tape-and-reel packaging specifications and pinout compatibility. Ensure that the ordering part number matches the exact voltage rating and package type required for your PCB layout. Cross-reference the date code and lot traceability requirements with the supplier to guarantee component authenticity and supply chain integrity before finalizing procurement orders.

AC DC Converters, Offline Switchers Selection Notes

Select this component when designing flyback converters requiring high power density and reduced bill-of-materials cost by removing secondary side components. It is suitable for applications demanding strict no-load power consumption limits and high efficiency across varying line and load conditions. Consider the thermal performance of the DPAK package and ensure adequate copper area on the PCB for heat dissipation during continuous operation at maximum load.

AC DC Converters, Offline Switchers Part Context

This device belongs to the InnoSwitch3-CP series, which represents an evolution in integrated power conversion technology. It builds upon previous generations by offering improved transient response and lower standby power consumption. The integration of the driver, controller, and power switch into a single package simplifies the design process and reduces the overall footprint of the power supply solution compared to discrete component implementations.

AC DC Converters, Offline Switchers Replacement Considerations

Direct replacements within the same family include other InnoSwitch3-CP variants with different voltage ratings or current capabilities, such as the INN4274C or INN4278C, provided the electrical specifications match the application requirements. Verify pin-to-pin compatibility and thermal characteristics when substituting. Always consult the official replacement guide to ensure functional equivalence and compliance with safety standards.