Users Guide AC/DC Converter Non-Isolation Buck Converter PWM method Output 10W 16.5V BM2P161W Reference Board BM2P161W-EVK-001 The BM2P161W-EVK-001 evaluation board outputs 16.5V voltage from the input of 90Vac to 264Vac. The output current supplies up to 0.6A. BM2P161W which is PWM method DC/DC converter IC built-in 650V MOSFET is used. The BM2P0161 contributes to low power consumption by built-in a 650 V starting circuit. Built-in current detection resistor and feed-back circuit realize compact power supply design. Current mode control imposes current limitation on every cycle, providing superior performance in bandwidth and transient response. The switching frequency is 65 kHz in fixed mode. At light load, frequency is reduced and high efficiency is realized. Built-in frequency hopping function contributes to low EMI. Low on-resistance 1.9 650 V MOSFET built-in contributes to low power consumption and easy design. The flywheel diode is a fast recovery diode of 3A/600 V RFN3BM6S, contributing to low power consumption. The conducted emission test is based on CISPR 22 Class B with best EMI design. Electronics Characteristics Not guarantee the characteristics, is representative value. Unless otherwise noted :V = 230Vac, I = 500mA, Ta:25 IN OUT Parameter Min Typ Max Units Conditions Input Voltage Range 90 230 264 Vac Input Frequency 47 50/60 63 Hz Output Voltage 15.0 16.5 18.0 V Maximum Output Power - 8.25 9.90 W I = 600mA OUT Output Current Range 0 500 600 mA (NOTE1) Stand-by Power - 45 - mW I = 0A OUT Efficiency - 84.7 - % Output Ripple Voltage - 69 - mVpp (NOTE2) Operating Temperature -10 25 65 Range (NOTE1) Please adjust operating time, within any parts surface temperature under 105 (NOTE2) Not include spike noise 2018 ROHM Co., Ltd. No. 60UG082E Rev.001 1/8 2018.3Users Guide BM2P161W-EVK-001 Operation Procedure 1. Operation Equipment (1) AC Power supply 90Vac264Vac, over 10W (2) Electronic Load capacity 0.6A (3) Multi meter 2. Connect method (1) AC power supply presetting range 90~264Vac, Output switch is off. (2) Load setting under 0.6A. Load switch is off. (3) AC power supply N terminal connect to the board AC (N) of CN1, and L terminal connect to AC (L). (4) Load + terminal connect to VOUT, GND terminal connect to GND terminal (5) AC power meter connect between AC power supply and board. (6) Output test equipment connects to output terminal (7) AC power supply switch ON. (8) Check that output voltage is 16.5V. (9) Electronic load switch ON (10) Check output voltage drop by load connect wire resistance CN1 : from the up :AC (N), :AC (L) + Electronic V AC Power Load Supply Power Meter DC Multi Meter Figure 1. Connection Circuit Deleting Maximum Output Power Po of this reference board is 9.9W. The derating curve is shown on the right. if ambient temperature is over 50, please adjust load continuous time by over 105 of any parts surface temperature. Figure 2. Temperature Deleting curve 2018 ROHM Co., Ltd. No. 60UG082E Rev.001 2/8 2018.3