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refacdc008

refacdc008reference design / application evaluation kit | rohm co., ltd.-ag旗舰平台尊龙

non-isolation buck converter pwm method output 3 w 24 v

the bm2p249tf-evk-001 evaluation board outputs 24v voltage from the input of 90vac to 264vac. the output current supplies up to 0.125a. bm2p249tf which is pwm method dc/dc converter ic built-in 650v mosfet is used.


  • the bm2p249tf contributes to low power consumption by built-in a 650v 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 100khz 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.
bm2p249tf-evk-001

design resources

 
  • bm2p249tf-evk-001

specifications

 
board number input voltage input frequency output voltage maximum output power output current range stand-by power efficiency output ripple voltage size operating temperature
bm2p249tf-evk-001 90 to 264vac 47 to 63hz 24v(typ.) 3w iout=125ma 2 to 125ma *1 105mw iout=0a 81.4% iout=125ma 31mvpp *2 18mm x 40mm -10 to 65deg.c
remarks:
*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
bm2p249tf-evk-001 2
1
1
1

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
bm2p249tf-evk-001 bm2p249tf ac/dc converters ics recommended -
bm2p249tf-evk-001 rfn1lam6s fast recovery diodes recommended -
bm2p249tf-evk-001 rre02vsm6s rectifier diodes recommended -