BM2P26CK-Z

Overview

The BM2P26CK-Z is an isolated flyback AC/DC converter IC in PWM mode with an integrated switching MOSFET. It operates within a drain voltage of 800V and a switching frequency of 100kHz. The device features a built-in 650V startup circuit for low power consumption and current mode control for excellent transient response. It supports through-hole DIP-7K packaging, handles input voltages from 11.9V to 25.5V, and includes light load frequency reduction and frequency hopping functions to minimize EMI.

Feature Summary

• Integrates an 800V super junction MOSFET with a 650V startup circuit for simplified design and low standby power.
• Utilizes PWM current mode control with per-cycle current limiting to ensure superior bandwidth and transient response.
• Incorporates frequency hopping and burst operation at light loads to achieve high efficiency and reduced electromagnetic interference.

Applications

• Isolated flyback power supply designs for consumer electronics
• Standby power supplies for appliances requiring low no-load consumption
• General purpose AC/DC conversion systems compliant with CISPR22 Class B

Procurement Notes

Verify the specific package variant (DIP-7K) and tube packaging quantity against official ROHM documentation before ordering. Confirm that the application does not require automotive qualification, as this standard-grade component is explicitly noted as unsuitable for vehicle equipment. Ensure thermal management aligns with the specified operating temperature range during integration.

Selection Notes

Select this component for applications requiring an integrated solution with an 800V rated MOSFET and fixed 100kHz switching frequency. It is suitable for designs needing low standby power via the built-in startup circuit and strict EMI compliance through frequency hopping. Consider the DIP-7K through-hole format for assembly requirements and verify input voltage compatibility within the 11.9V to 25.5V range.

Part Context

This part belongs to the BM2P series of AC/DC converters by ROHM Semiconductor. It is designed for isolated flyback topologies using PWM control. The series emphasizes ease of design through integrated high-voltage components and advanced control features like light load frequency reduction. It serves as a core controller for compact, efficient power adapters.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult ROHM's official cross-reference tools or datasheets for equivalent models within the BM2P family or other compatible AC/DC converter series.