NCP1632ADR2G

Overview

The NCP1632ADR2G is a two-phase interleaved Power Factor Correction (PFC) controller from onsemi, designed for high-efficiency power supplies. It integrates dual MOSFET drivers and operates within a supply voltage range of 10 V to 20 V. The device supports Frequency Clamped Critical Conduction Mode (FCCrM) with a switching frequency up to 130 kHz and features frequency foldback at low power to enhance light-load efficiency. It provides precise zero-current detection and fast line/load transient compensation. The component is housed in a SOIC-16 package and functions reliably across an operating temperature range of -40°C to +125°C.

Feature Summary

• Integrates dual MOSFET drivers for two-phase interleaved PFC applications with 180-degree phase shift
• Supports Frequency Clamped Critical Conduction Mode (FCCrM) with automatic transition between DCM and CrM
• Features frequency foldback functionality to optimize efficiency under low-power conditions
• Includes comprehensive protection mechanisms such as output overvoltage/undervoltage protection and soft-start

Applications

• High-efficiency AC-DC power supplies
• Computer and server power units
• Telecommunications equipment power stages
• Consumer electronics adapters requiring PFC compliance

Procurement Notes

Verify the specific suffix 'ADR' against the manufacturer's current datasheet to confirm pinout compatibility and operational parameters. Ensure the ordering code matches the required tape-and-reel quantity specifications. Cross-reference the RoHS compliance status and material composition declaration if environmental regulations apply to your manufacturing process. Confirm the active status of this part number before finalizing procurement plans.

Selection Notes

Select this controller when designing systems requiring interleaved PFC topology to reduce input current ripple and improve thermal distribution. It is suitable for applications needing fixed-frequency operation in discontinuous conduction mode without low reverse recovery time diodes. Consider its integrated driver capabilities for driving TO220 or TO247 MOSFETs directly. Evaluate its frequency foldback feature if light-load efficiency is a critical design constraint.

Part Context

This component belongs to the NCP1632 family of power factor controllers. It shares functional similarities with other onsemi PFC solutions but is distinct in its integration of dual drivers for interleaved operation. The NCP1632 series focuses on simplifying the design of robust PFC stages by minimizing external component count while maintaining high performance standards for modern power conversion requirements.

Replacement Considerations

The NCP1632DR2G is a related variant within the same product family. Verify if the 'D' suffix indicates any differences in packaging, temperature grade, or specific electrical characteristics compared to the 'ADR' version before substituting.