BM2P121W-Z

AC DC Converters, Offline Switchers Overview

The BM2P121W-Z is a non-isolated PWM DC/DC converter IC with an integrated switching MOSFET, designed for AC/DC conversion in plug-in products. It features a fixed switching frequency of 65 kHz and supports an input voltage range from 9.5 V to 12.96 V. The device incorporates a 650 V breakdown startup circuit and a Super Junction MOSFET. Key electrical parameters include a maximum duty cycle of 45%, operating supply current of 850 uA, and an on-resistance of 1.9 Ω. It operates within a temperature range of -40°C to +105°C and is housed in a DIP-7 package.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a 650 V Super Junction MOSFET and startup circuit for simplified design
• Employs PWM current mode control with per-cycle current limiting for transient response
• Includes frequency hopping and burst operation modes to reduce EMI and light-load power consumption

AC DC Converters, Offline Switchers Applications

• Non-isolated high-efficiency AC/DC converters for plug-in devices
• Power supplies for consumer electronics requiring compact designs
• Systems utilizing standard-grade power management components

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'Z' indicates RoHS compliance as documented. Confirm that the DIP-7K package and tube packaging align with assembly requirements. Ensure the application does not involve automotive equipment, as this standard-grade product is explicitly not recommended for such use. Cross-check input voltage specifications against the target circuit design.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring a non-isolated topology with integrated power switching capabilities. The fixed 65 kHz frequency and current-mode control are suitable for designs prioritizing bandwidth and transient response. Consider the 650 V drain voltage rating when sizing external components. The inclusion of soft start and thermal shutdown provides protection mechanisms essential for reliable operation in consumer electronics.

AC DC Converters, Offline Switchers Part Context

The BM2P121W-Z belongs to ROHM's series of AC/DC converter ICs aimed at achieving high efficiency and miniaturization. These controllers integrate POWER MOSFETs to reduce component count and system size. The series emphasizes low noise features and comprehensive protection circuits, including UVLO and OVP, to support robust power management in various electronic systems.

AC DC Converters, Offline Switchers Replacement Considerations

BM2P121XH-Z is a listed variant within the same family.