BM2PAB1Y-Z

Overview

The BM2PAB1Y-Z is a non-isolated PWM DC-DC converter IC designed for AC/DC applications. It integrates a 650V super junction MOSFET and a startup circuit to facilitate compact, high-efficiency power supply designs. The device employs current mode control with per-cycle current limiting for stable transient response. Key operational parameters include a fixed switching frequency of 25kHz or 65kHz, an input voltage range of 11.1V to 26V, and a maximum drain voltage of 730V. It features frequency hopping for EMI reduction and operates within a temperature range of -40°C to 105°C in a DIP7K package.

Feature Summary

• Integrates a 650V super junction MOSFET and startup circuit for simplified design
• Utilizes current mode control with per-cycle current limiting for superior bandwidth
• Incorporates frequency hopping functionality to minimize electromagnetic interference
• Supports burst operation at light loads to enhance efficiency

Applications

• Non-isolated AC/DC power supplies for consumer electronics
• Compact adapter systems for appliances with socket connections
• Low-power industrial control system power modules

Procurement Notes

Verify the specific suffix variant (e.g., Z) against the manufacturer's latest datasheet to ensure compatibility with required input voltage ranges and switching frequencies. Confirm that the DIP7K package dimensions align with the target PCB layout. Ensure compliance with RoHS directives if applicable to the end product. Cross-reference the part number with official distributor catalogs to avoid obsolete stock.

Selection Notes

Select this component for designs requiring integrated switching elements to reduce external component count. The built-in current detection resistor allows for smaller passive components compared to external sensing methods. Consider the fixed frequency options when designing filter circuits. The thermal performance should be evaluated based on the expected load conditions within the specified operating temperature range.

Part Context

This IC belongs to ROHM Semiconductor's series of PWM DC-DC converters featuring integrated MOSFETs. It targets applications needing efficient, non-isolated power conversion without the complexity of transformer-based isolated designs. The integration of protection features like UVLO and thermal shutdown enhances system reliability in standard-grade commercial applications.

Replacement Considerations

Direct substitutes may include other ROHM BM2P series variants with similar voltage ratings and package types, such as BM2PDB1Y-Z or BM2P161W-Z, provided their specific electrical characteristics match the design requirements.