Reference Design

A system-level evaluation board that combines ROHM's IC and discrete products. We have already solved not only the characteristics of individual products but also the problems that may occur when combining them to build a system, thus contributing significantly to the reduction of development time for our customers.

Non-Isolation Buck Converter PWM method Output 15W 15V Reference Design


The BM2P016-EVK-001 evaluation board outputs a 15V voltage from an input of 90Vac to 264Vac. The output current provides up to 1.0A.The BM2P016 PWM type DC/DC converter IC with 650V MOSFET is used.

The BM2P016 contributes to low power consumption by incorporating a 650V withstand voltage startup circuit. Using current mode control, cycle-by-cycle current limiting provides excellent performance in bandwidth and transient response. The switching frequency is fixed at 65kHz. At light loads, frequency reduction achieves high efficiency. Built-in frequency hopping function contributes to low EMI. The low on-resistance 1.4Ω・650V withstand voltage MOSFET is built in, contributing to low power consumption and easy design.
The optimized EMI design complies with CISPR 22 Class B for noise terminal voltage / radiation emission testing.


Reference Board NameBM2P016-EVK-001
Input Voltage Range90 to 264Vac
Input Frequency47 to 63Hz
Output Voltage15.0V(Typ)
Maximum Output Power15.0W Iout=1000mA
Output Current Range0 to 1000mA*1
Stand-by Power121mW Iout=0A
Output Ripple Voltage48mVpp*2
Operating Temperature-10 to 65deg.C

*1 Please adjust operating time, within any parts surface temperature under 105°C
*2 Not include spike noise


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