step down charger power module 435khz

{"cid":"91219651","title":"DC 400W 15A Step-up Boost Power Module LED Driver 8.5-50V to 10-60V Voltage Charger","imgUrl":"https:\/\/img.chinax.com\/nimg\/1e\/1d\/4bc04fbfdefc43e3f8d0351ddf51-200x200-1.jpg","attrs":{"Price":"$2.38\/pieces 10-99 pieces","Brand Name":"Creatall, CREATALL","Model Number":"DC 400W, 400W 15A","Minimum Order Quantity":"10 pieces","Place of Origin":"Guangdong, China","Mounting Type":"standard","Description":"dc-dc boost module","Origin":"CN(Origin)","Condition":"New","Type":"Voltage Regulator"}}

{"cid":"91220860","title":"Enerkey 2S 20A 30A Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board For Drill Motor","imgUrl":"https:\/\/img.chinax.com\/nimg\/71\/9c\/43ef5878c5adfa5487591de15605-200x200-1.jpg","attrs":{"Price":"$1.15-$2.5","Brand Name":"Enerkey","Model Number":"EK-B2S20AS\/20AM\/30AM","Minimum Order Quantity":"50pieces","Delivery Time":"1-3days","Certification":"ISO9001\/CE\/ROHS","Place of Origin":"Shenzhen, China","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, ","Supply Ability":"1000000pcs per day","Packaging Details":"Strong paper box +EVA Foam","Product Name":"2S 20A 30A Lithium Battery BMS","Copper Thickness":"2oz","Application":"Battery management system","Board Thickness":"1.6mm","PCB Layer":"2 layer","Allowable Operating Voltage Range":"0-8.4V","Rated Discharge Currenturrent":"20A \/ 30A","Peak Starting Current":"100A","Used For":"Lithium Battery Protection Board","Quiescent Current":"2.5uA","Base Material":"FR-4","Surface Finishing":"Lead-free HASL","Product Size":"L46xW20xT4mm(20AS)\uff0c L52xW22xT3.6mm(20AM), L58xW22xT4mm(30AM)","Weight with Package":"0.01kg(20AS)\uff0c 0.012kg(20AM)\uff0c0.014kg(30AM)"}}