BM2P052

Overview

The BM2P052 is a PWM type DC/DC converter IC from ROHM Semiconductor, designed for AC/DC conversion systems. It integrates a 650V MOSFET and a 650V start circuit to facilitate low-power designs in both isolated and non-isolated topologies. The device operates with a fixed switching frequency of 65 kHz and supports an input voltage range from 8.9 V to 26 V. Key electrical parameters include a maximum duty cycle of 82%, a quiescent current of 600 uA, and an on-resistance of 4 Ω. It functions within a temperature range of -40°C to +105°C and utilizes a DIP-7 package.

Feature Summary

• Integrates a 650V MOSFET and high-voltage start circuit for simplified design
• Employs current mode control with per-cycle current limiting for stable performance
• Features burst operation and frequency reduction for improved light-load efficiency
• Includes built-in protection mechanisms such as VCC overvoltage and SOURCE pin open protection

Applications

• Low-power AC/DC power supplies for consumer electronics
• Adapters for devices requiring isolated or non-isolated conversion
• Systems prioritizing reduced standby power consumption

Procurement Notes

Verify the specific ordering suffix and packaging configuration against the official ROHM datasheet before procurement. Confirm that the DIP-7 through-hole package aligns with your PCB layout requirements. Ensure compliance with RoHS directives if applicable to your manufacturing standards. Cross-reference the manufacturer part number with authorized distributor listings to guarantee authenticity and traceability.

Selection Notes

Select this component when designing AC/DC converters that require integrated high-voltage switching capabilities without external discrete MOSFETs. It is suitable for applications needing fixed 65 kHz operation and current-mode control. Consider its thermal performance within the specified operating temperature range and ensure the external current detection resistor meets design specifications for optimal transient response.

Part Context

The BM2P052 belongs to the BM2P series of PWM-type DC/DC converter ICs manufactured by ROHM Semiconductor. This series focuses on achieving high efficiency and compact designs for AC/DC applications. The BM2P052 specifically targets general-purpose power supply designs, offering a balance of integrated features and ease of implementation for both isolated and non-isolated architectures.

Replacement Considerations

Consult the official ROHM documentation for verified substitute part numbers. Ensure any replacement maintains compatibility with the DIP-7 package and 650V MOSFET integration. Verify that alternative components support the same PWM current mode control and operating voltage ranges.