LT8312EMS#PBF

Overview

The LT8312EMS#PBF is a power factor correction controller in a 16-pin MSOP package. It operates as an offline boundary conduction mode PFC boost converter with a switching frequency of 400kHz. The device supports input voltages from 90VAC to 265VAC and provides a regulated output of 400Vdc at 0.375A, delivering up to 150W of single constant-voltage power.

Feature Summary

• Implements boundary conduction mode for inherent MOSFET valley switching to reduce switching losses
• Enables boost diode zero current switching to eliminate reverse-recovery losses

Applications

• Offline power factor correction circuits
• Applications requiring regulated input voltage
• High-efficiency AC-DC conversion systems

Procurement Notes

Verify the specific suffix #PBF indicates tube packaging when reviewing procurement documentation. Confirm that the component matches the 16-pin MSOP physical footprint required for the target design. Ensure the ordering information aligns with the manufacturer's official specifications for this exact part number variant.

Selection Notes

Select this component for designs requiring integrated boundary conduction mode control to minimize external gate drive complexity. The fixed 400kHz frequency simplifies magnetics design compared to variable frequency alternatives. Verify that the thermal performance of the MSOP package meets the requirements for the intended power dissipation levels.

Part Context

This part belongs to the LT8312 family of power factor correction controllers manufactured by Analog Devices. It is designed specifically for high-efficiency offline applications where reducing switching losses is critical. The device integrates the necessary control logic for boundary conduction mode operation without requiring complex external timing components.

Replacement Considerations

Direct substitutes must support boundary conduction mode PFC topology and similar voltage ratings. Verify pin compatibility and control loop characteristics before substitution.