NCP1910A65DWR2G

Overview

The NCP1910A65DWR2G is a high-performance combo controller designed for ATX power supplies and flat panel TV converters. It integrates a 65 kHz continuous conduction mode (CCM) power factor correction (PFC) circuit with an LLC controller featuring a high-voltage driver. The device supports over 85 offline power supply topologies. Key electrical characteristics include a switching frequency of 65 kHz, a supply voltage range of 8.8 V to 35 V, and operation within a temperature range of -40°C to +125°C. It utilizes a SO-24WB package.

Feature Summary

• Integrates a CCM PFC controller and an LLC controller with a high-voltage driver in a single package.
• Implements adjustable frequency foldback in the PFC circuit to reduce switching losses during light load conditions.
• Includes dedicated pins for primary-to-secondary side handshaking, supporting Power Good signals and optocoupler control.
• Features a fast fault input that triggers an auto-recovery soft-start sequence immediately upon overcurrent detection.

Applications

• ATX power supplies
• Flat panel TV converters
• Offline power supplies requiring strict signal sequencing

Procurement Notes

Verify the component status as NRND or obsolete before integration, as new design recommendations may be restricted. Confirm the specific suffix 'DWR2G' corresponds to the SO-24WB package and reel packaging details. Ensure compatibility with existing PCB footprints and thermal management requirements for the integrated high-voltage driver and dual-controller architecture.

Selection Notes

Select this component for designs requiring combined PFC and LLC regulation in a compact form factor. It is suitable for applications needing efficient light-load performance via frequency foldback. Consider the integrated high-voltage driver capabilities and the specific pinout for handshaking protocols when designing the control loop and feedback network.

Part Context

This part belongs to the NCP1910 series of offline controllers from onsemi. It is engineered to meet stringent energy efficiency standards by optimizing converter performance across varying load conditions. The combination of PFC and LLC control addresses the complexity of modern power supply designs while reducing component count and board space.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify if other variants within the NCP1910 family, such as NCP1910B65DWR2G, offer compatible functionality or if alternative controllers from different manufacturers are required due to end-of-life status.