UC2879N

AC DC Converters, Offline Switchers Overview

The UC2879N is a phase-shift resonant PWM controller manufactured by Texas Instruments, designed for high-efficiency offline AC-DC power conversion. It operates in a 20-pin PDIP package with through-hole mounting. The device supports a maximum switching frequency of 300 kHz and features four outputs. It accepts a supply voltage range from -55V to 125V and delivers an output current of 100mA. The component functions within a temperature range of 0°C to 70°C and supports a maximum load cycle of 100%.

AC DC Converters, Offline Switchers Feature Summary

• Implements phase-shifted full-bridge zero-voltage switching (ZVS) control topology for efficient power conversion.
• Integrates a high-voltage startup circuit capable of operating across a wide input voltage range.
• Provides dedicated drive outputs optimized for controlling external MOSFETs in resonant applications.

AC DC Converters, Offline Switchers Applications

• Offline AC-DC converters utilizing full-bridge topologies
• High-power factor power supplies requiring ZVS operation
• Industrial power conversion systems

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm pinout compatibility and functional specifications. Ensure that any variant suffixes do not alter the electrical characteristics or thermal performance relative to the standard UC2879N datasheet requirements. Cross-reference the package dimensions and lead finish details with the mechanical outline drawing prior to integration into the design.

AC DC Converters, Offline Switchers Selection Notes

Select this component for designs requiring phase-shift resonant control in offline applications. Evaluate the thermal management capabilities required for the PDIP package under continuous operation. Confirm that the external gate drive components can handle the specified output current and voltage levels. Assess the system's input voltage range to ensure it falls within the controller's operational limits.

AC DC Converters, Offline Switchers Part Context

The UC2879N belongs to the UC series of power management integrated circuits from Texas Instruments. This family focuses on advanced switching controller technologies for high-performance power supplies. The part is specifically engineered for resonant mode applications, distinguishing it from standard PWM controllers used in isolated or non-isolated DC-DC converter topologies.

AC DC Converters, Offline Switchers Replacement Considerations

Consult the official Texas Instruments substitution guide for verified alternative part numbers. Do not assume direct pin-to-pin compatibility with other UC series devices without verifying the electrical parameters and pin configuration in the respective datasheets.