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refacdc003reference design / application evaluation kit | rohm co., ltd.-ag旗舰平台尊龙

non-isolation buck converter pwm method output 2 w 12 v

the bm2p129t1f-evk-001 evaluation board outputs 12 v voltage from the input of 90 vac to 264 vac. the output current supplies up to 0.167 a. bm2p129tf which is pwm method dc/dc converter ic built-in 650 v mosfet is used. the bm2p129tf contributes to low power consumption by built-in a 650 v starting circuit. built-in current detection resistor realizes 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 100 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 9.5ω 650v mosfet built-in contributes to low power consumption and easy design.

design resources

  • bm2p129tf-evk-001


board number input voltage input frequency output voltage maximum output power output current range stand-by power efficiency output ripple voltage size operating temperature
bm2p129tf-evk-001 90 to 264vac 47 to 63hz 12v(typ.) 2w iout=167ma 2 to 167ma *1 30mw iout=0a 76.1% iout=167ma 38mvpp *2 18mm x 40mm -10 to 65deg.c
*1 please adjust operating time, within any parts surface temperature under 105 °c
*2 not include spike noise

distribution inventory

board number distributor quantity available
bm2p129tf-evk-001 2

key components

board number part number product category datasheet status spice ltspice thermal model symbol & footprint 3d step samacsys ecad library calc tool rohm solution simulator
bm2p129tf-evk-001 bm2p129tf ac/dc converters ics recommended -
bm2p129tf-evk-001 rfn1lam6s fast recovery diodes recommended -
bm2p129tf-evk-001 rre02vsm6s rectifier diodes recommended -