Compact AC/DC converter ICs

Author: EIS Release Date: Jan 4, 2022

ROHM has developed AC/DC fly-back converter ICs with an integrated 730V breakdown MOSFET: the BM2P06xMF-Z series (BM2P060MF-Z, BM2P061MF-Z, and BM2P063MF-Z).

 

The devices are suitable for auxiliary power supply and Switch Mode Power Supply (SMPS) products for industrial drives as well as home appliances – including air conditioners, white goods, and factory automation equipment.

 

These fly-back ICs require no additional heatsinks and no discharge resistors and capacitors. They help designers to shorten design time, simplify the circuitry, reduce costs and increase reliability by offering integrated solutions.

 

ROHM has developed compact surface mount high power 45W models BM2P06xMF-Z. They are equipped with an original low-loss SJ (Super Junction) MOSFET together with optimized PWM control circuitry – facilitating the development of 85V to 264V AC/DC converters.

 

Adopting a surface mount package supports automatic board mounting (which was previously difficult to do in the past).

 

Meanwhile, the implemented functions ensure compliance with the IEC62368 safety standard, even when the discharge resistor (a source of loss during standby) is removed.

 

Additionally, original low standby power control technology is applied – resulting in extremely low standby power consumption. Supply voltages up to 60V (VCC) are also supported – eliminating the need for an external step-down power supply circuit.

 

ROHM has reduced5 standby power by over 90% along with the number of power supply circuit components by four, contributing to greater power savings and higher reliability in applications.