【应用】瑞萨隔离放大器PS8352AL2用于伺服驱动器母线检测,具有8倍放大增益、差分输出抗干扰性强
伺服驱动器部分参数需要断电再次上电才能生效,绝大数厂家的伺服驱动器都需要把主功率电路与内部的开关电源电路分开,典型的内部框图如下所示:
图1 伺服内部框图
这样做的方案优点是断电上电才生效的参数更改起来会较方便,主电路供电的去掉与否,丝毫不影响控制电的输出,但是缺点是主功率电路母线上的电压采样不能通过内部开关电源的变压器绕组方案进行电压的检测,只能通过单独的电路进行采样,因为开关电源绕组电压不能实时反馈母线上电容的电压变化情况。
瑞萨隔离放大器PS835AL2是一款模拟输出的放大器,具有8倍的放大增益、差分输出的优点,适合用于电流采样以及电压采样电路中,本文介绍该器件在220V伺服驱动器母线检测上的应用。
图2 PS835AL2特性
图3 主功率回路采样原理图
220V伺服主功率回路PN上的电压为330V,图3的方案中通过电阻分压式方案把PN电压降低到PS8352AL2能接收到的范围内。在PN电压为330V的时候,送给PS8352AL2的电压为0.123V(计算公式为:Vpn*R39/(R39+R88+R90)),当伺服驱动器跳过压保护时,PN电压为400V,送给PS8352AL2的电压为0.149V。PN电压在330V-400V之间的时候输入电压范围满足PS8352AL2的量程要求(量程要求为±200mV)。
图4 差分输出放大部分
按照图3的设计,PN母线电压经过PS8352AL2放大,以差分对的形式输出,然后按照图4的电路进行放大处理。PN为330V时,经过PS8352AL2的放大,其输出的电压为0.984V(计算公式为:0.123V*G;PS8352AL2的典型增益为8),按照图4电路的方案,最终送到DSP的采样电压为2.164V(计算公式为:Vout+*R8/(R2+R8)+(R9/R3)*{Vout+*R8/(R2+R8)});同样,当PN为400V时,送到DSP的采样电压为2.622V;
本文通过电路介绍PS8352AL2在伺服驱动器电压采样上的应用,PS8352AL2具有高增益、差分输出抗干扰性强的特性满足伺服驱动器对电压采样的要求。
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技术问答 发布时间 : 2017-07-30
INTERSIL SPACE PRODUCTS Highly Reliable, Efficient, Accurate Radiation Hardened and Radiation Tolerant ICs
型号- ISL71830SEH,ISL70023SEH,HS-139RH,ISL73444SEH,ISL70591SEH,ISL73100SEH,HS-565BEH,ISL73020SEH,ISL71010B50,ISL71590SEH,HS-4424RH,ISL72026BSEH,ISL73127EH,HS-0546RH,ISL71001SEHM,HS-1840AEH,ISL71090SEH25,HS-0547RH,ISL73061SEH,ISL71710SLHM,HS-26CLV31RH,HS-508BRH,HS-117EH,ISL70218SEH,ISL75051ASEH,ISL70040SEH,ISL73051ASEH,IS-1825BSEH,ISL75052SEH,ISL70005ASEH,HS-26C32RH-T,ISL70219ASEH,ISL72026SEH,ISL78845ASRH,ISL71841SEH,ISL71610M,ISL71610SLHM,HS-4423RH,,ISL73840SEH,HS-2420EH,ISL70024SEH,HS-1115RH,ISL73128EH,ISL738841ASEH,ISL73141SEH,HS-26CLV32EH,ISL73033SLHM,HS-4424BEH,ISL70001SEH,ISL71010B25,ISL72991RH,ISL70592SEH,HS-139EH,HS-3530ARH,ISL71001M,ISL70417SEH,ISL71090SEH12,ISL70321SEH,ISL70617SEH,ISL78841ASRH,ISL73841SEH,ISL70001ASEH,HS-4423BEH,ISL706CRH,HS-303CEH,ISL72028SEH,HS-4424EH,ISL7124SEH,ISL74422BRH,ISL72813SEH,ISL70517SEH,ISL70062SEH,ISL71030M,ISL71823ASRH,ISL72027BSEH,ISL71831SEH,ISL705BRH,ISL73590SEH,IS-2100ARH,ISL71043M,HS-303BRH,ISL70419SEH,ISL738845ASEH,ISL73847SEH,ISL71001SLHM,HS-117RH,ISL73814SEH,ISL74422ARH,ISL71218M,HS-201HSRH,ISL70005SEH,IS-1825BSRH,ISL28227SEH,HS-26C31RH-T,ISL7124SRH,HS-0548RH,HS-4424DEH,ISL705CRH,ISL72027SEH,ISL738840ASEH,ISLVERSALDEMO2Z,HS-4424BRH,ISL72814SEH,HS-26CLV32RH,ISL70001SRH,ISL73148SEH,HS-26CT31EH,ISL70227SRH,ISL78843ASEH,ISL71823BSRH,HS-26C31RH,HS-4423EH,,ISL7119EH,ISL73591SEH,ISL73052SEH,HS-26CT31RH,ISL73141SEHMF7,ISL706ARH,IS-139ASRH,ISL71091SEH33,HS-303AEH,HS-4423BRH,ISL70244SEH,ISL78840ASRH,HS-1135RH,ISL706CEH,ISL78841ASEH,ISL70100SEH,HS-1825AEH,ISL70020SEH,ISL71091SEH40,ISL7X590SEH,ISL73005SEH,IS-2100AEH,ISL73040SEHEV4Z,HS-26C32EH,ISL71043MEVAL1Z,ISL72028BSEH,HS-5104AEH,ISL73023SEH,IS-1825ASRH,HS-26CT32EH,ISL73040SEH,ISL70061SEH,ISL705BEH,HS-1840ARH-T,HS-26C32RH,ISL70227SEH,ISL706BRH,HS-26CT32RH,HS-303BEH,ISL71444M,IS-1845ASRH,ISL71040M,ISL70003ASEH,HS-OP470AEH,ISL71934M,ISL705ARH,ISL78843ASRH,HS-1825ARH,HS-302AEH,ISL73096RH,HS-1840BRH,HS-4424DRH,ISL705CEH,ISL73141SEHMFN,ISL71041M,HS-201HSEH,HS-303ARH,ISL73096EH,ISL73419SEH,ISL73062SEH,ISL78840ASEH,ISLRTG4DEMO1ZA,ISL71026M,ISL7119RH,IS-139ASEH,ISL73024SEH,IS-1715AEH,ISL706AEH,ISL738843ASEH,HS-26CLV31EH,HS-508BEH,HS-4080AEH,ISL73127RH,HS-1840ARH,ISL71710M,ISL70002SEH,ISL71090SEH75,HS-1145RH,ISL7457SRH,ISL70218SRH,IS-1845ASEH,ISL71091SEH10,ISL73041SEH,ISL78845ASEH,ISL73148SEHMF,ISL73244SEH,ISL706BEH,ISL73007SEH,HS-1840BEH,HS-3530AEH,ISL73592SEH,IS-1715ARH,ISL70444SEH,HS-26C31EH,ISL73128RH,ISL71091SEH20,ISL71840SEH,ISL71090SEH50,ISL73321SEH,HS-565BRH,ISL28417SEH,ISL705AEH,ISL71441M
在变频控制器上,用PS8352AL2替换avago的ACPL-C790电流传感器,光耦隔离放大器PS8352AL2有什么特点?
PS8352AL2是一个带有隔离运放功能的高精度IC,支持模拟输出,内部隔离运放放大倍数为8,非线性度最大只有0.35%,高共模抑制比CMTI>=10kV/us。
技术问答 发布时间 : 2017-07-30
电机侧相电流检测,请推荐合适的光耦替代HCPL-7840。
推荐型号为PS8352AL2的光耦,其主要特点如下:• 非线性(NL200=0.35%MAX)• 高共模瞬变抗扰度(CMTI=10kV/us MIN)• 高隔离电压(BV=5000Vr.m.s) • 增益公差(G=7.92~8.08(±1%)) • 增益:8V/V TYP • 封装:8引脚DIP引线弯曲型,用于长爬电距离和表面贴装(L2)• 无铅产品 • 安全标准: --UL认证:No.E72422 --CSA批准:第CA 101391号(CA5A,CAN/CSA-C22.2 60065,60950) --DIN EN 60747-5-5(VDE 0884-5)认证(可选)
技术问答 发布时间 : 2017-07-30
CN028-5 THREE-LEVEL(T-TYPE) DC/AC INVERTER
型号- RBN40H65T1FPQ,ISL8845A,RAA211250,RAA211250GNP,RBN75H65T1FPQ-A0,RAA2142504GSP#HA0,RAA214220,EL5220TIYZ,R5F566TKXXXX,ISL8844AAUZ,ISL8844AMBZ,R5F566TAXXXX,PS8352AL2-V-AX,RBN75H125S1FP4-A0,EL5220T,RAA211250GNP#HA0,RBN50H65T1FPQ,RBN40H125S1FPQ,ISL8840A,RV1S9231A,ISL8842A,RV1S9231ACCSP-10YV,ISL8844AMUZ,RBN25H125S1FPQ,RAA214250,RV1S9231ACCSP-10YC,RX66T,PS8352AL2-V-E3,ISL8844A,PS8352AL2,R5F566TEXXXX,PS8352AL2-E3,RAA211250GSP,RBN75H65T1FPQ,R5F566TEEDFM#30,RV1S9231ACCSP-10YC#SC0,ISL8844AABZ,RBN75H125S1FP4,ISL8841A,ISL8843A,EL5220TIYZ-T7,PS8352AL2-V,R5F566TFXXXX,EL5220TIYZ-T13
ANALOG ICs AND DISCRETES
型号- UPC258,UPC259,2SJ601,ISL26134,2SJ602,ISL28433,UPC251,RJK0451DPB,ISL1221,ISL1220,ISL28430,ISL26132,UPA2766T1A,ISL12082,2SJ605,2SJ606,2SJ603,PS2861B-1,ISL5827,ISL5829,RJK1055DPB,R1LP0108ESA,UPC1251,PS8551A,R1LP0108ESF,R1LP0108ESN,ISL12022M,RJK03M2DPA,ISL5957,NP60N06PDK,RJK1054DPB,UPC277,ISL28413,UPC272,ISL28414,UPC271,EL5308,EL5306,ISL5961,PS2815-1,ISL32741E,UPA2822T1L,PS2815-4,RJK03M1DPA,ISL5727,ISL5729,X9C102,X9C103,PS2913-1,X9C104,RJK0658DPA,BCR25FM-14LJ,ISL26102,ISLA118P50,PS8902,ISL26104,PS9117A,PS2565-1,ISL12020M,RJK0332DPB-01,ISL28408,ISL28407,ISL5857,EL5202,N0603N,ISL28230,EL5203,ISL12026A,UPC177,PS8352A,RJK1056DPB,ISL28114,ISL28236,ISL28233,ISL60002,RJK1003DPP-A0,ISL28113,ISL28110,EL5204,NP45N06VDK,EL5205,ISL267450A,ISL28118,PS9905,BCR5AS-14LJ,R1WV6416RBG,2SK3814-Z,R1LP5256ESP,N0604N,UPA2813T1L,RJK0656DPB,ISL28227,ISL28345,UPA2765T1A,UPC1458,R1LP5256ESA,RJK0452DPB,ISL32740E,2SK3385,ISL28107,PS9551A,BCR20FM-14LJ,ISL28108,RJK0854DPB,2SK3386,ISL12027A,PS2562-1,EL5104,PS2706-1,UPA2812T1L,ISL1209,EL5462,ISL1208,UPC3403,BCR10PM-14LJ,ISL28213,ISL28214,EL5105,UPA2764T1A,N0601N,ISL28210,EL5106,2SJ687-ZK,PS9924,ISL28218,ISL5927,ISL5929,PS2915-1,2SK3479,ISL1219,ISL1218,UPA2735GR,RJK6035DPP-A0,ISL28325,UPC4742,UPC4741,UPC4744,N0602N,2SK3480,ISL28208,2SK3484,ISL28207,2SK3482,2SK3366,2SK3365,EL5364,ISL2671286,RMLV0408EGSP,EL5362,ISL28158,R1LV1616HSA,RMLV0408EGSB,PS9031,RMLV0408EGSA,PS9151,UPA2820T1S,BCR08AS-12A,RJK0855DPB,EL5378,RMLV1616AGBG,UPA2736GR,EL5375,RJK03M5DNS,EL5373,READ2351JSP,ISL28148,ISL28025,ISL28022,ISL28023,RMLV0416EGSB,BCR30AM-12LB,RMLV0816BGBG,ISL28130,UPA3753GR,N0439N,RMLV0808BGSB,EL5262,EL5263,ISL28136,ISL28134,READ2352JSP,ISL28133,PS9307A,PS2535-1,ISL81387E,X9C503,PS2561D-1,ISL33337E,BCR3FM-14LB,R1LP0408DSB,EL8302,READ2352J,UPA2737GR,ISL28248,ISL28127,ISL28006,ISL28488,2SJ599,ISL28005,ISLA110P50,2SJ598,ISL28117B,RJK0354DSP,R1LP0408DSP,2SK3365-Z,EL5161,BCR1AM-12A,EL5162,EL5160,ISL28194,EL5167,ISL22346WM,READ2351J,EL5165,EL5166,EL5163,ISL28191,EL5164,N0413N,ISL21440,PS2701A-1,R1LV0216BSB,PS2845-4A,R1LV3216RSA,R1LV3216RSD,EL5172,EL5170,EL5171,ISL3333XE,EL8201,EL5177,EL5174,UPA2738GR,EL5175,BCR5PM-14LJ,BCR20RM-30LA,2SJ601-Z,ISL267817,PS2805C-1,RJK0346DPA,PS2805C-4,2SK3366-Z,RJK0330DPB-01,ISL3335XEE,UPA2600T1R,ISL28291,ISL28290,ISL413XX,ISL28177,ISL28217B,2SK3484-ZK,PS2533-1,PS2561F-1,PS9851-2,PS9851-1,ISL90842,X9C303,ISL90841,UPA2690T1R,ISL33357E,UPA2739T1A,RJK2075DPA,ISL90728,RJK1053DPB,EL8101,ISL90727,ISL90726,N0400P,2SJ602-Z,ISL28288,N0412N,UPA2821T1L,2SK3367-Z,ISL33334E,ISL55012,NP60N04VDK,UPC4074,PS9309,PS2705A-1,ISL28417B,PS9303,RMLV0414EGSB,PS9313,ISL3333E,PS8101,ISL21007,ISL23428,ISL23425,UPC812,ISL55016,UPC811,ISL55015,UPC814,ISL55014,UPC813,RJK0703DPP-A0,R1LV0108ESN,BCR08DS-14A,R1LV0108ESF,R1LV0108ESA,N0434N,PS9822-1,PS9822-2,NP90N04VLK,ISL3332E,ISL23415,ISL22326,UPC4092,UPC4094,RJK0353DPA,KAD56XX,ISL23418,READ2302G,UPC802,PS2711-1,2SK3715,ISL55033,UPA2816T1S,UPC832,RJK4532DPD,X9408,NP90N06VDK,PS9332,ISL3331E,PS9331,ISL22317,NP30N04QUK,ISL22316,RJK0652DPB,UPC834,ISL95810,UPC835,2SK3482-Z,2SK3812-ZP,BCR8FM-14LJ,X9511,RJK5033DPD,PS9317,PS9324,ISL23511,ISL81334E,BCR16PM-14LJ,BCR12PM-14LJ,ISL3330E,ISL22424,ISL33354E,KAD55XX,UPC822,UPC824,ISL55210,PS2833-1,R1WV6416RSA,ISL23345,PS9113,PS2833-4,ISL90462,ISL90461,PS9351,ISL23348,ISL55211,BCR3AS-12B,UPC842,ISL22316WM,2SJ599-ZK,RJK1051DPB,R1WV6416RSD,PS9587,ISLA112P50,RJK0328DPB-01,ISL41334E,2SK3385-Z,ISL333XXE,UPC844,UPA2670T1R,R1LV0208BSA,RMLV0816BGSB,ISL22326WM,RMLV0816BGSA,RJK6006DPP-A0,RJK1028DNS,PS9009,RMLV0816BGSD,ISL23325,ISL23445,PS9013,ISL26710,ISL23328,ISL23448,2SJ606-Z,ISL26712,NP89N04PDK,RJK1002DPP-A0,X60003,RJK03M5DPA,RMLV1616AGSA,PS2514-1,RMLV1616AGSD,PS2381-1,ISL55001,2SK3484-Z,UPC4062,UPC4064,BCR08AM-14A#FD0,ISL21010,ISL22346,PS9821-1,PS9821-2,PS9124,ISL22102,PS9123,ISL23318,PS9001,PS9122,ISL23315,2SK3386-Z,PS2733-1,RJK0651DPB,BCR12FM-14LJ,UPC4072,ISL26708,ISL55004,RJK1001DPP-A0,ISL55002,ISL12008,X9268,UPA2814T1S,ISL21080,PS2761B-1,PS2801C-4,PS9352A,BCR20PM-14LJ,ISL813XX,UPA2660T1R,BCR1AM-12A#FD0,ISL95311,ISL95310,BCR3FM-12RB#FA0,BCR3PM-12LG,UPA2631T1R,PS2703-1,ISL267450,BCR5FM-14LJ,ISL267452,PS2715-1,RMWV3216AGBG,X9258,X9259,PS2841-4A,ISL32704E,PS2841-4B,PS2801C-1,RMLV0416EGBG,X9252,X9250,X9251,2SJ598-ZK,PS2811-1,PS9851,ISL94202,PS2811-4,RJK5033DPP-M0,ISL3260XE,2SK3433,2SK3793,ISL94208,READ2302GSP,ISL94203,UPC319,X9111,X9118,HI5660,X9116,X9119,PS8502,PS8501,BCR3AS-14B,ISL94212,RJK0454DPB,R1LV1616HBG,UPA2825T1S,BCR08AM-14A,UPA2630T1R,ISL267440,UPA2672T1R,X9110,BCR10FM-14LJ,BCR5AS-12B,RJK5035DPP-A0,UPC458,UPC452,UPC451,RJK0653DPB,NP60N04PDK,UPC4558,ISL5861,BCR8AS-14LJ,BCR3PM-14LG,2SJ598-Z,PS9506,ISL41387E,ISL5627,ISL5629,RJK0851DPB,PS9817A-2,BCR40RM-12LB,2SJ601-ZK,PS9817A-1,ISL12058,UPC4560,X95840,ISL26322,ISL26321,ISL26324,ISL26323,ISL5761,ISL26320,PS2802-1,RJK0455DPB,ISL26329,PS2802-4,BCR08AM-12A,ISL26325,ISL5757,ISL12057,2SK3424,UPC4572,PS2911-1,UPC4574,ISL12025,ISL12028,UPC4570,ISL28X30,ISL26313,R1LV5256ESA,ISL26312,RJK0456DPB,
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可定制波导隔离器频率覆盖5.5GHz~110GHz,插损损低至0.25dB、隔离度、正向方向功率、封装尺寸参数。
最小起订量: 1pcs 提交需求>
可定制射频隔离器/环行器(10M-40GHz),双工器/三工器(30MHz/850MHz-20GHz),滤波器(DC-20GHz),功分器,同轴负载,同轴衰减器等射频器件;可定制频率覆盖DC~110GHz,功率最高20KW。
最小起订量: 1 提交需求>
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