UC5602DWP

Overview

The UC5602DWP is a dual-channel, high-voltage power factor correction controller manufactured by Unitrode. It integrates two independent PFC controllers within a single package to support interleaved boost converter topologies. The device operates with a fixed frequency and provides phase-shifted drive signals to reduce input current ripple and improve efficiency. Key electrical parameters include an operating voltage range of 10V to 36V, a switching frequency adjustable via an external resistor, and output drive currents capable of directly driving power MOSFETs. The component utilizes a 16-pin Wide Body SOIC (DW) package.

Feature Summary

• Dual independent control channels for interleaved operation
• Integrated high-voltage startup circuitry
• Fixed-frequency PWM generation with phase shifting
• Direct gate drive capability for power switches

Applications

• Interleaved boost power factor correction stages in AC-DC converters
• High-efficiency offline power supplies
• Server and telecom power systems requiring low input ripple

Procurement Notes

Verify the specific suffix 'DWP' against manufacturer documentation to confirm package type and temperature grade. Ensure compatibility with existing PCB footprints for the 16-pin Wide Body SOIC. Cross-reference pinouts with official datasheets to prevent misalignment during assembly. Confirm availability through authorized distributors only.

Selection Notes

Select this component when interleaved PFC is required to minimize input filter size and enhance thermal distribution. Evaluate the maximum switching frequency limits against magnetic component specifications. Consider the operating voltage range relative to the supply rail stability. Verify that the drive strength meets the gate charge requirements of the selected MOSFETs.

Part Context

The UC5602 belongs to Unitrode's legacy line of specialized power management ICs designed for advanced AC-DC conversion. It succeeded earlier single-channel designs by offering integrated dual-channel synchronization. The DWP designation indicates a specific plastic surface-mount package variant optimized for automated assembly processes in industrial power equipment manufacturing.

Replacement Considerations

Publicly confirmed direct substitutes include the UCC28180 series for updated feature sets. Alternative equivalents may require schematic adjustments due to pinout differences. Verify functional compatibility regarding drive strength and control loop characteristics before substitution.