IRIRS29751S120W姝ｈ礋30VD绫婚煶鏀剧數婧愯В鍐虫柟妗?
IR 鍏徃鐨処RS29751/2鏄嚜鎸崱鍗婃ˉ椹卞姩鍣?鍏堕鐜囧拰姝诲尯鏃堕棿鑳界敤涓や釜澶栨帴鍏冧欢缂栫▼,寰姛鑰楄捣鍔ㄥ拰瓒呬綆闈欐�佺數娴?鍏稿瀷搴旂敤涓篖CD鍜孭DP TV,閫氫俊鍜孭C寮�鍏崇數婧?瀹跺涵闊冲搷绯荤粺.鏈枃浠嬬粛浜咺RS2795(1,2)涓昏鐗规�?鏂规鍥?搴旂敤鐢佃矾鍥句互鍙奃绫婚煶棰戞斁澶у櫒+/-30V 120W鐢垫簮鍙傝�冭璁′富瑕佹寚鏍?涓绘澘鍜屾帶鍒舵澘鐢佃矾鍥?鏉愭枡娓呭崟,PCB甯冨眬鍥?The IRS2795(1,2) is a self oscillating half-bridge driver IC for DC-DC resonant converter applications, especially the LLC resonant half-bridge converter. The frequency and dead time can be programmed externally using two external components. The IC offers over current protection using the on state resistance of the low-side MOSFET. The IC can be disabled by externally pulling the voltage at the CT/SD pin below its enable voltage threshold.IRS2795(1,2)涓昏鐗规�?· Simple primary-side control solution for fixed and variable frequency DC-DC resonant converters.· Max 500kHz per channel output with 50% duty cycle· Floating channel bootstrap operation up to +600Vdc· Programmable minimum and maximum switching frequency· Programmable soft start frequency and soft start time· Programmable dead time· Micropower start-up & ultra low quiescent current· Over-current protection using low side MOSFET Rds(on)· User initiated micropower “Sleep mode”· Under-voltage Lockout· Simple design with minimal component count.· Lead-freeIRS2795(1,2)鍏稿瀷搴旂敤:· LCD & PDP TV· Telecom SMPS, PC SMPS· Home Audio Systems鍥?.IRS2795(1,2)鏂规鍥惧浘2.IRS2795(1,2)鍏稿瀷搴旂敤鐢佃矾鍥綝绫婚煶棰戞斁澶у櫒+/-30V鐢垫簮鍙傝�冭璁he evaluation board consists of a front-end AC-DC rectifier stage cascaded with a half-bridge resonant DC/DC converter with +/-30V output voltage rails.The front end is a conventional pi type EMI filter, followed by bridge rectifier stage. Two 200V/680uF bulk capacitors are connected in series to provide stable DC bus voltage. The rectifier can be configured as full bridge rectifier for 220Vac input, or voltage doubler rectifier for 110Vac input.The downstream converter is a multi-resonant half bridge LLC converter whose control is implemented with the IRS27952 controller HVIC (U101 on the control board). The controller drives the two half-bridge MOSFETs with a 50 percent fixed duty cycle with pre-defined dead-time. Output voltage regulation is achieved by changing the switching frequency according to the feedback signal. 鍥?.+/-30V鐢垫簮鍙傝�冭璁″褰㈠浘+/-30V鐢垫簮鍙傝�冭璁℃妧鏈寚鏍?鍥?.+/-30V鐢垫簮鍙傝�冭璁′富鏉跨數璺浘鍥?.+/-30V鐢垫簮鍙傝�冭璁℃帶鍒舵澘鐢佃矾鍥句富鏉挎潗鏂欐竻鍗?鎺у埗鏉挎潗鏂欐竻鍗?鍥?.璋愭尟鍙樺帇鍣ㄧ粫缁勭數璺浘璋愭尟鍙樺帇鍣ㄧ粫缁勭壒寰佽〃:鍥?.涓绘澘甯冨眬鍥?鍗曞眰PCB)鍥?.鎺у埗鏉垮竷灞�鍥?鍙屽眰PCB)璇︽儏璇疯:/product-info/datasheets/data/irs27951s.pdf鍜?technical-info/refdesigns/iraudps3.pdf
