【应用】华冠电流型PWM控制器用于光伏逆变器，开关频率500kHz，输入电压可达30V

时间： 2023-02-24 来源：世强

技术问答

随着新能源的发展，光伏产品被广泛应用。通过光伏板阵列将太阳能转换为直流电，再经过一系列的升压和逆变后将输出电压转换为常用频率的交流电。由于光伏板上电压存在较大波动，无法直接给控制电路进行供电，因此，设计师门通常会采用辅助电源的方式从母线进行取电。

有客户在设计一款光伏逆变器产品，控制电路部分用辅电供电，通过PWM控制器配合MOS组成反激拓扑。本文给客户推荐一款华冠的电流型PWM控制器 UC2844M/TR，具有16V/10V的UVLO阈值电压，50%占空比，可支持最大500K的开关频率，内含振荡器，高增益误差放大，锁存器等电路，非常适合用于驱动功率MOSFET以及反激设计。

图1 . 华冠UC2844M/TR在光伏逆变器中的应用

UC2844M/TR在光伏逆变器中的优势：

1.输入电压可达30V，提供16V/10V的UVLO阈值电压，可降低电流损耗，改善噪声；

2.开关频率500kHz，具备非常好的动态响应，减少输出谐波造成的影响；

3.推挽输出电流1A，可适应负载变化，提升带负载能力。

综上所述，华冠的UC2844M/TR非常适合光伏逆变器辅助电源设计。

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目录- 公司简介 MOS管/比较器/存储器电路/达林顿阵列电源管理电路低压差稳压器线性稳压/通用接口电路驱动/音频电路运算放大器/时基与时钟/逻辑电路&其他电路微处理器运放接口半导体器件概览

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选型指南 - 华冠半导体 - 2019/9/11 PDF 中文下载

华冠半导体宣传册

型号- HG9923,DS1302,TEA2025,DS1307,CD4069,MAX187,XC61C-XX,CD4075,CD4073,TL494,NE556,NE555,CD4078,CD4077,MC34U8,75N08,HGC5615,24C128,CD4071,CD4070,KA7500,HG9261XX,FCF8563,LM3480,74HC4067,LM311,LM432,LM431,LM555,LM317,74HC32,74HC595,CD4068,CD4067,CD4066,74HC238,HG51031,CD4060,24C256,HG1201-XX,HG9921,MAX6576,HG9922,LM4580,74HC00,74HC03,HG202,HG1205-H,74HC02,MAX3085,74HC04,HG3480,74HC07,CD4094,LM386-1,LM1084,LM1085,HG29100-XX,LM1086,LM1087,HGC29300-XX,CD4093,74HC4046,HG9910,LM1083,HG335,74HC14,LM79XX,HG24C08B,HG18B20,74HC573,74HC574,HGC5620,74HC4053,74HC08,HGC29150-XX,74HC4051,74HC4052,CD4081,LP2954,ZNBG4000,LP2951,LMV321,LP2950,ICL8038,HG8F629,HG8F628,NE594,HGC2543,MAX7219,HG75176,HGC2549,HG2003,LM29150,HG2004,LM4250,HG13085,HG3232,HG235,LM78XX,HG232,HG1051,LM358,HG1052,HGV8558,HGV8556,HGV8554,LM2937-XX,HGV8551,HGV8552,CA3140,HG8F630,HG8F873,AD590,74HC273,HG2593,LM1117-XX,LM321,HG485,HG2591,LP3965-XX,LM324,HG2592,LM567,13N50,LM317M,LM317L,74HC123,74HC244,74HC245,74HC125,HG8F887,HG8F883,LM317T,LM7660,LM331,HG135,HG0066,HG0065,HGC1589,LM336,HGV8965N,LM339,HGV8331,74HC132,74HC374,74HC138,74HC139,DS1990,74HC373,LM386,CD40106,LM385-1.2 2.5,LP2997,LP3965,LP2996,LP2995,XC62FP-XX,LM78L05,LM78L06,MC3845,LM78L08,74IIC164,LM78L09,LMV358,MC3842,MC3844,9N90,MC3843,TDA2822,LM385,HG6008,HG24C02B,HGV2774,HGV2771,HG5171,HGV2772,TDA8138,LM78M12,TDA8137,LM78M15,HGC5213-XX,74HC192,74HC193,74HC194,LM393,HG3085,ZNBG3211,HG24C256,74HC86,MAX489,74HC165,HG1582-XX,MAX488,LM78M06,TL072,LM2940-XX,HGV258,LM78M08,LM78M09,IIG34C87,TL074,50N06,28N60,74HC164,HGC1549,ULN2803,ULN2804,HG298,HG297,HG24C128,HGC1543,MAX232,TL082,TL084,HG1203-XX,HG293,LMC555,HG54123,LM285-1.2 2.5,LM2904,HG6570,LM2901,LM2902,LM2903,HGV358,85N06,HG3078,MAX490,HG3075,MAX491,HG3072,74HC74,HGV224,TL064,TL062,HGV221,MIC5212,HG1108-XX,HG24C04B,HG24C16B,DS75176,74IIC238,50N50,HGV8054,HGV324,74IIC04,TRF830,HGV321,LM8002,XC62GR-XX,HG24C32,HGC29500-XX,TEA2822,HG75HVD3082E,HG7189,LM3916,LM78LXX,IRF830,LM3915,HG93C56,LM3914,TL064C,MXA485,HG2981,HG2980,LM2954,HG93C46,HGC52XX,HG34C86,HG34C87,MAX13805,IIGV8555,MC34119,MC34118,LM2576-XX,IRF730,HG8137,CD4528,HG7169,IIGC8F 629,70N06,LM78MXX,CD4520,TLC2543,HG8138A,HG1734,HG1735,20N60,HG1185-XX,HG1851,IRF840,CD4518,HG1990,CD4517,HG1991,HG7179,LM1881,24C64,CD4511,LM2931-XX,HGL297,HGL298,HG93C66,HG1509,KA7500B,LF347,LM29302,HG1501,HG1621,HG75LBC184,HG75LBC182,CD4543,TL072C,TL084C,HG2803,HGL293,LF398,HG75LBC176,IRF740,3N80,CD4538,I.M78M05,CD4541,XC62GP-XX,24C32,20N50,MAX1487,4N60,MC1403,24C08,MAX202,TL074C,TL062C,TLC5615,HG1937,LM2575-XX,HG1932,24C02,24C01,24C04,HG7012,LM78L12,LM78L15,CD4562,HG809,LM29502,24C16,HG2571,HG2572,HG2573,HG3421,HG3420,11N90,12N60,ICL7660,93C06,HGC5219,LM2596-XX,HGC8F 887,TDA2030,75N75,HG8F676,HG8F675,LM4860,HG3423,HG1487,HG3422,LM3414,HG1583,LM1117,LM4862,LM4861,HG1580,LM4863,HGC8F 630,TL082C,CD4007,HG1208-XX,TDA2003,CD4013,CD4011,LM4990,LM4871,HG8F683,HG8F684,ULN2003,ULN2004,LM2574,LM2575,HGV8538,LM2576,HGV8535,HGV8536,HGV8534,HGV8531,MC34063,HGV8532,LM7905,LM809,CD4001,HG3526,HG3525,24C512,HG3524,LM35,LM7915,LM741,HGV8728,LM7912,HGV8968,HGV8726,HGV8966,CD4028,HG24C512,CD4027,HGV8965,CD4025,OP07,10N80,74HC540,74HC541,ICL7106,PCF8563,ICL7107,HG4824,HGV8052N,LM4890,HGC8F675,LM7805,LM7924,TD62083A,LM2596,CD4017,LM79LXX,HGC8F 684,CD4015,LM7809,LM7808,HGC8F 683,LM7806,CD4020,HGV2771N,CD4024,CD4023,CD4022,HG26C31,HG26C32,10N60,LM56,LM7815,HG56,ZNBG6000,LM7812,TD62084A,HG70XX,74HCU04,NE5532,CD4049,HGC8F 676,CD4053,CD4052,CD4051,93C66,CD4050,HG2623,HG2982,HG2985,HG2621,HG2622,UC3845,LM4558,HG24C64,74LVC1G04,UC3842,UC3843,UC3844,LM79MXX,7N60,TLC1543,IIGV8334,93C56,CD4040,IIGV8332,CD4046,74HC533,74HC534,LM4560

商品及供应商介绍 - 华冠半导体 - 2022/2/8 PDF 中文下载