NCP1392BDR2G

Overview

The NCP1392BDR2G is a self-oscillating high-voltage half-bridge MOSFET gate driver designed for offline applications. It supports bus voltages up to 600V and features an adjustable operating frequency range from 25kHz to 480kHz, with a minimum frequency adjustment accuracy of ±3%. The device provides fixed dead-time options of 0.6μs or 0.3μs to prevent cross-conduction. It includes a PFC delay timer available in 100ms or 12.6ms configurations to ensure stable bus voltage before enabling the downstream converter. Peak drive currents are rated at 1A source and 0.5A sink.

Feature Summary

• Self-oscillating architecture eliminates external oscillator components
• Integrated high-voltage capability for direct connection to 600V bus lines
• Non-latching enable input allows immediate restart without PFC delay
• Internal VCC clamping maintains supply voltage stability under varying conditions

Applications

• Flat panel display power converters
• Low-cost resonant switching mode power supplies (SMPS)
• High-power AC/DC adapters for laptops
• Offline battery chargers
• Lighting ballisters

Procurement Notes

Verify the specific suffix variant against the application requirements, as different package or temperature grades may exist within the product family. Confirm that the selected component matches the required dead-time specification and PFC delay timer setting for the target design. Ensure compatibility with the intended switching frequency range and load conditions before finalizing procurement.

Selection Notes

Select this component for designs requiring a simple, cost-effective half-bridge solution with integrated timing functions. Consider the fixed dead-time options when optimizing for efficiency versus switching losses. Evaluate the need for the PFC delay timer based on the upstream power factor correction stage behavior. Ensure the driving capability meets the gate charge requirements of the selected power MOSFETs.

Part Context

This part belongs to the NCP1392 series of high-voltage gate drivers manufactured by onsemi. It is specifically engineered for self-oscillating topologies commonly found in offline power conversion systems. The device integrates essential protection and timing features typically requiring discrete components in other architectures, simplifying the overall bill of materials.

Replacement Considerations

Check for pin-to-pin compatible alternatives within the same manufacturer's portfolio that offer similar voltage ratings and drive capabilities. Verify if any updated revisions provide improved thermal performance or adjusted timing parameters suitable for the current design constraints.