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non-isolation buck converter pwm method output 9 w 12 v

the bm2p121x-evk-001 evaluation board outputs 12v voltage from the input of 90vac to 264vac. the output current supplies up to 0.75a. the bm2p121x which is pwm method dc/dc converter ic built-in 650v mosfet is used.

  • the bm2p121x 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 65khz 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 1.5ω 650v mosfet built-in contributes to low power consumption and easy design.

design resources

 
  • bm2p121x-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
bm2p121x-evk-001 90 to 264vac 47 to 63hz 12v(typ.) 9w iout=0.75a 0 to 0.75a *1 140mw iout=0a 0.821 61mvpp *2 91mm x 30mm -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
bm2p121x-evk-001 2
2
1
inquiry 1

key components

 
board number product category part number datasheet status spice ltspice thermal model symbol & footprint 3d step samacsys ecad library calc tool rohm solution simulator
bm2p121x-evk-001 ac/dc converters ics recommended -
bm2p121x-evk-001 fast recovery diodes recommended -
bm2p121x-evk-001 rectifier diodes rre02vsm6s recommended -