【经验】PWM充电器SGM41526用于扫地机器人发热异常问题分析
SGM41526是一款4A同步1.6MHz PWM充电器，内部有循环电流限制，集成24V开关MOSFET，数字软启动，充电效率高达95.2%，30V绝对最大输入电压额定值，可调过压阈值，4.5V至22V输入工作电压范围，自动电源路径选择器（电池/适配器），动态电源管理（DPM）。有客户在扫地机器人上面用SGM41526做充电管理，样品测试芯片发热异常，本文将对该问题进行分析。
原理图如下
经过仔细检查，发现两处参数影响了IC发热
1， 芯片9脚，由于LED限流电阻太小，导致IC灌电流过大，影响发热
2， 芯片19脚，这个脚功能是用来驱动MOS的，直接接地，相当于芯片一直处于放电状态，不但影响发热，还影响功耗。
最终9脚外部电阻放大，19脚悬空，解决问题。
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用户80220631 Lv3. 高级工程师 2022-04-13Hi, dear! Could you please send this schematic in better resolution?
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描述- 圣邦微SGMICRO与TI/ADI/MAXIM/LT/Onsemi/ST/Microchip/Nexperia/MPS/TOSHIBA/ROHM/RICHTEK/SILERGY/ABLIC/Renesas/Diodes/NXP/NJM/Infineon/Allegro 等品牌的信号链、电源芯对照表。
型号- SY8388,SN74HC541,A3981,IR44273,74AVC8T245Q,TS3A24159,TS3A24157,FAN3100,SLG88103,ADA4622-2,SLG88104,ADA4622-1,SGM2560,NA199,SGM2564,TSL6002,LMR23620,SGM48017C,LM431,FAN49103,MAX4282,SGM61220,BD9A201,74HC595,TLV3542,TLV3541,TS3A4751,TLV522,LMR23630,FAN53611,TC7SZ14FU,74LCX04,NCS21803,HCF4051,NCS21801,HCF4052,74LCX08,HCF4053,TSC214I,TLV3544,LMP2022,TSB611,NL27WZ04,SGM2588,FAN53601,SN74HC573,SN74HC574,INA333,TSU101,TSC213I,TSU102,NTMFS4C10N,UCC27531-Q1,TSU104,RT8293,74HC573,74HC574,SGM621,RT8290,SGM41600,TSB621,SGM620,SGM2572,SGM41603,SGM2571,SGM2576,SGM2575,SGM2578,SGM8T245S,RT8296,NL17SG07,SGM8557-1,TSU111,SGM8557-2,TSU112,ESD103-B1-02,INA321,TLV2242,TLV2241,SGM2205-12XK3G,ISL28118,OPA2277,BU30TD2,LM5109,BQ25619,SGM48013C,BQ25618,INA317,BQ25611,SGM62110,SGM62112,FSA4157,TPS76933,SGM2593,XB6091IS,BQ25601,TPS76950,BQ25600,SGM61230,TXS0104,TXS0102,SGM61232,SGM61234,TLV8801,TXS0101,SGM61233,74HC123,SGM5349-16,TLV62084,SGM431V,LTC2054,TPS51200,LTC2050,TLV8812,TLV8811,SGM61235,TLV8802,RT8253,BD9D323,BD9D322,AD5541,PMPB27EP,TPS54302,SGM4553YXET,LM7322,SGM8706,LM7321,SGM8707,SGM8701,MAX4664,LPV7215,SGM12UB1D2,AP2191,SGM3001,SGM42513,74LVC245A,SGM3005,TPS61099,SGM3002,SGM8276-2,TPS7A8300,SGMOP17C,TPS2553,ISL28130,TPS2556,TPS2557,SGM42403Q,SGM42553,BD6222,SGM8255B-2,ISL28134,74AHC1G08GV,TPS2551,74HC165,SGM62116,SGM62118,SGM62117,TPS3852-Q1,MAX4684,74HC164,AP2172,A3916,AP2171,TPS560430,A3918,BQ25638,SGM8709,U74LVC126,MP8676,SGM61280,MCP6V16,SGM42544,NCP718,LMX331,LMR36520,LM27761,TC7SZ32FU,SN74LVTH162373,ADM708,ADM707,SGM38042,SGM38046,TPS54340,MAX4230,TPS3823,LM2904,TC74VHC138,LM2902,LM2903,SGM8740,SGM2077A,SGM8742,SGM2077B,SGM8743,PESD5V0F1BSF,SGM41515A,MIC5209,LPV802,LPV801,SGM8748,SGM8749,NLAS44599,TPS54336,SGM40666A,SGM8746,TC74VCX16245,TPS54331,74LCX32,TPS54335,SGM41513D,SGM41513A,MCP6406,FTL75939,OPA548,SGM8957-1,MCP6402,SGM8957-2,TLV6208,SGM5223,MAX4232,TC74LCX16244,MAX4231,TPS3808,SN74LVC2T45,OPA2333P,MAX4236,SGM8551XN,TPS3840,TPS54320,SGM48018C,OPA990,RT4730,SGM41512A,SGM8745X,SN74AHC1,MAX9938,74LVTN16244,74LVTN16245,LPV821,SGM48019C,MCP6V52,MCP6V51,RT4723,OPA2210,TLV755P,SN74AC244,MCP6V54,AW2027,SGM8604-2XTDU8G,SGM8750,LPV812,LPV811,AD8534,SGM41283,SGM5353-16,AP2120,AD8539,AD8538,74LVC125,MCP6V69,74LVC126,SGM41285,DRV8313,MCP6V67,SN74LVC2G66,SGM7SZ244S,CAT4104,TS321,SGM8429C-4,AD5593R,SGM61430A,MP28373,MP5121,TMP108,74LVT16373,SGM8304,MAX40078,AD8541,74LVT16374,MCP6442,TMP103,TMP102,MP9943,MP9942,AP2112,MCP6V79,NCV890100,SGM13003A,MCP6V76,STSPIN250,MCP6V77,74LVTH125,SGM8770,AP2114,SGM38042B-1,LM2841,AD8513,AD621,AD620,NCS20034,SGM65230,NCS20032,AD623,AD8515,SGM65231,AD627,TC7SPN334,SGM13002A,SGM8477-1,SGM2035C,SGM41291,SGM2036S,MCP6V96,TUSB320,74LVC138,SGM7SZ245S,SGM8958-2,SGM41296,SN74CBT3245,MP9928,SGM41298,SGM8958-1,SGM6132,MAX4736,SGM6130,AD8532,AD8531,MAX4730,TPS3422,SGM833A,MCP6472,SGM833B,TLV1702,SGM7SZ32,SQ27403,MC74LVC74,TPS3420,TPS3421,TP2011,SGM2037H,MUX36S08,BISS0002,MC74AHC08,74LVC373A,TPS2595XXDSG,MCP6001,TPS3895,AD8502,TPS3896,TPS3897,AD8500,MCP6002,TPS3898,AP2151,SGM41282C,TPS3899,AD8506,AD8505,TLV7021,SGM832A,TP2025,MC33074,TP2021,MCP6004,MCP6006,LT7183,74LVC374A,AP2141,SN74LVC2G04,MCP6492,74LVC1G126,74LVC1G125,SGM48535B,SGM7SZ14,SGM48535A,SGM48752X,TPS2596,BU28TD2WNVX,AS179,XC6201,SGM15CB1A4,XC6206,TC7WZ04,SN74LVC2G14,MCP6022,SGM2210P,SGM7SZ08,MCP6024,SGM834A,SN74LVC2G17,MCP6021,SGM834B,SGM7SZ04,MP2497,SGM7SZ00,IRL44273LPBF,SGM48753X,SGM48754X,AD5592R,TLV61046A,TPS7A8400,SGM48753,SY8301,SGM48754,SQ24335,SGM2211S,SGM48757,ISL21080,SGM48759,SY8303,MCP6032,MCP6031,SGM48751,SGM48752,SGMNQ07430,SGM61720,TSV911,TSV912,TSV914,SN74AVC16T245,MP2490,SGM05UB1B3,LPV324,OPA4379,OPA4374,HD3SS3412,MCP6044,OPA4376,OPA2192,MCP6041,74VHC244,LMR16030,74AHCT595,APD7118,OPA2197,TPS62730,MCP6042,OPA2196,SN74AVC8T245,SN74LVC157,OPA2191,ADG509,ADG508,SGM8478-1C,FSA2457,TMUX415,TC7SZ00,LM1117,AD8599,TPS62743,TSV6192,SN74LVC125,SGM706S,SN74LVC126,RT6160,TPS76901,TC7SZ07,SGM2564A,TLV707P,NTMFS4C06N,MP2451,TS393,LMH6643,TC74VCX164245,SN74LVC138,SGM48760,SGM25662,MIC708,MCP6061,MP2460,LME49726,RT6150,MIC706,SN74AHCT86,MCP6074,TC7SH125F,STSPIN220,APD196,SGMOP07,74HC541,TC7SET08,LMC7211,BQ25890H,MAX706,MAX9119,MAX708,MCP6071,SGM2566C,74AHC573D,TC7SZ32,BU33TD2,74LVC157,YDA145,BD9G341,SGM2567S,NJMOP2277,INA828,LPV358,NCP382,NE5532,SGM2217Q,LMG1025-Q1,NCV6324,SGMNQ40430,NCV6334,SGM48536BQ,SGM21102G,74AHCT86,BGA524N6,SGM21102C,FSA2466,SGM21102B,INA818,SGM21102A,SGM05FB1E2,SN74AHC244,TLV74118,TC7SZ32F,NC7WZ04,74AVC8T245BQ,TSV991,TSV992,TSV994,SGM3851A,SGM48536CQ,TC913,74AHC244,AD8571,74AVC2T45,SGM2521A,TLV74128,SN74LVC541,AZ1117,LMV881,BU28TD2,MAX14589,TLV2316,SGM61330,SGM724,TS5V330,SGM5209-14,74LV541A,SGM3758,NJU7076,MAX4163,MAX4162,PESD15VW1BCSF,TLV74133,TPS25921A,OP213,TLV74130,SGM722,TLV2333,SGM723,SGM721,SGM8610-2,NLAS3899,OPA2140,EL5420,MAX4174,MAX4173,SGM15UB1E2,TC7SH126FU,SGM41100A,SGM61310,SKY13351,A4980,SGM41100V,SGM61306,SGM61305,SGM61308,SGM61307,SGM8262-2,TC7PZ14,SGM3795,74LCX126,74LCX125,74LVC541A,SGM3799,SA4159
对照表 - SGMICRO
【选型】国产多节锂电池充电管理芯片可pin-pin替换TI的BQ24170，最大充电电流4A
在一些8.4V/12.6V等多串锂电池供电的产品中，充电部分有使用TI品牌的BQ24170系列独立式充电管理芯片，圣邦微电子推出的SGM41526/SGM41527系列充电管理芯片，可以pin to pin替代TI BQ24170/BQ24172。
器件选型 发布时间 : 2021-02-06
SGMICRO锂电池充电管理芯片选型表
线性充电、开关充电、电荷泵充电。1-4节锂电池充放电管理，IIC控制。4A、6A、8A、10A开关充电电流，充电电流可调。
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产品型号
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品类
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VIN (Min)(V)
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VIN (Max)(V)
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OVP Threshold(V)
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Charge Voltage (V)
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SHDN Iq(μA)
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Status Indication
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Package
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SGM4056
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Li-Ion Battery Charger
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4.55
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26.5
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6.8, 10.5
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4.2
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200
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Status Indication
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SOIC-8(EP) TDFN-3×3-8L
TDFN-2×3-8L TDFN-2×2-8 |
选型表 - SGMICRO 立即选型
SGM41526/SGM41527 1.6MHz Synchronous Li-Ion and Li-Polymer Stand-Alone Battery Chargers with Automatic Power Path Selector
型号- SGM41527,SGM41527YTQQ24G/TR,SGM41526YTQQ24G/TR,SGM41526
【选型】效率高达95.2%的充电管理芯片SGM41526助力视频记录仪，输入工作电压4.5至22V
某用户设计户外视频记录仪中使用需要一颗充电管理芯片给三节锂电池串联电池包充电，针对用户需求本文推荐SGMICRO推出的独立的锂离子和锂聚合物电池充电器SGM41526，4.5V至22V的宽输入工作电压范围，支持最高4A的充电电流，充电效率高达95.2%。
器件选型 发布时间 : 2023-02-17
【应用】SGM41526锂电池充电管理芯片助力室外工业光能燃气表设计，充电效率95.2%，最大4A充电
光伏板收集太阳能，同时给锂电池充电，锂电池用来保证在无光照条件下燃气表可以正常使用。在这个过程中就需要一个锂电池充电管理芯片来保证锂电池安全、高效的充电。本文给大家推荐国产圣邦微推出的锂电池充电管理芯片SGM41527。
应用方案 发布时间 : 2022-12-01
产品目录（PRODUCT CATALOG）
型号- MB10M,US2DF,M7L,US1BF,MB10S,FR2J,B0530WS,FR2M,FR3GF,US2DL,MB10F,US1BL,FR1D),SD103AX,SD103AW,RS1G,RS1D,UF2KF,PXT2907A,RS1A,RS1M,MMBT2907A,1117 系列,HKTQ60N02,US3GF,HKTO30N03,MMBT4401,GBU1510,MMBT2222,FR1G,MMBT4403,SS18F,FR1DF,IRLML5203,FR1M,FR107L,FR1DL,UF1JF,ER1JBF,HKT4054,MMST3906,HKT4056,S2MF,HKT02N10,GBU2510,US3DF,MMST2222A,BSS138W,FR2GF,SK24L,2SA1213,2SK3018W,US2BL,FR2GL,US2BF,1117,UF1GF,MMBD4148A,RB520S-30,2SA812,2SC3356,2SC3357,MMBD2835,US1AL,IRLML5103,SMCJXXXA,US1AF,HKTG50N15,HKTE180N08,S1MF,UF2JF,HKTE180N10,SD103AWS,RS2M,HKTD130N08,RS2J,MMBT5401,HKTD90N03,SS1X,SS2XB,FR1GF,HKTD120N04,2SA1036,2SA1037,GBJ2010,FR1GL,UF2M,HKTG50N03,UF1DF,US3BF,UF2J,SS26L,SS14L,2SA1162,BAS40-04,BAS40-05,SS26F,SS14F,SM15TXXXA,2SK3018,HKTG120N04,UF1G,SS18,FR2JF,SS16,UF1D,SS14,UF1B,SS12,FR2JL,UF1M,US2AL,UF1K,HKTE160N08,1N4448WS,UF1J,US2AF,UF2GF,SS210L,SS13L,AO9435,G1A,G1B,SS210B,SS210A,G1D,G1G,SS210F,SD103CW,FR2KF,SS3X,UF1BL,2SA1015,UF2DL,SMBJXXXA,GBU410,IRLML6402,IRLML6401,UF1BF,UF2DF,HKT6219-3V3,SS110L,B0540WS,TL431,SS16F,SS54,SS110F,HKTD7N65,SS16L,SS2X,FR1JF,FR1JL,UF3M,TL431L,US3AF,UF3GF,TL431D,BAT720,CXT5401,DB207S,1N5817WS,FR2MF,FR1KF,SS310A,FR1KL,HKTE120N10,HKTE120N15,B5819W,AO8814,HKTG48N10,SS310L,HKT6213-3V3,HKTD110N06,2N7002T,AO8810,A03401,A03400,2N7002K,DB107S,US1JF,RS3AF,SS310F,BAT54S,SS56,MMBD4148CA,BAS21C,MMBD4148CC,78 系列,B0530W,BAT54H,AO8822,AO8820,BAS21A,BAT54C,IRLML0040,BAT54A,US2MF,US1KF,HKTQ80N03,FR1MF,1N5818WS,1N5818W,HKTG90N03,BAS70-06,FR1ML,US2JF,BAS70-04,BAS70-05,C945,AO4435,IRLML2246,SS210W,US2J,HKTDB0NO3,RS2AL,HKTG100N10,DB105S,MMBTH10,RS2AF,US2M,B5819LW,1N5817W,RS1JBF,US1B,B0540W,US1A,HKTQ50N03,HKT05N10,AO8804,US1J,US1G,US1D,1N5819WS,DB106S,US2KF,2N7002DW,RS3BF,US1M,2SD965A,1N4148,US1K,S8550,HKT6206,HKTQ150N03,78L,78M,UF1ML,BAV99D,MMBD4448,UF1MF,DB103S,HKTD20N06,BSS138,US1GF,HKTG90N12,SMBJXXXCA,79M,HKTG100N08,HKTD5N50,HKTE110N20,DB104S,1N5819W,US3M,US1DF,S1A,S1B,S1D,B5817W,S1G,SMAJXXXCA,S1K,S1J,B772,BAT54WS,S1M,UF2MF,MMBT2222A,UF1KF,2SD965,RS1MBF,BAT54W,BAS21S,DB101S,S8205A,US2GF,GBJ5010,HKTE100N10,KTA1661,S1ABF,S2M,DW01,HKTD4N65,DB102S,BC857C,BC857A,BC857B,AO4616,PXT8050,AO3407,AO3401,SS510,AO3402,BAS70,AO3403,AO3404,B5819WS,B5819WT,AO3400,78L 系列,2N7002KT,RS2GF,HKTD5N20,RS2GL,HKTD4N50,BC856B,BC856C,79M 系列,BC856A,7333,AO3416,ES2MA,AO3419,AO3415,2N7002KM,ES2MF,RS1DL,GBP210,MMST5401,GBJ1510,ES1JL,ABS8,RS1DF,ABS6,SMAJXXXA,ABS4,ABS2,ABS10,SS510B,FR1MBF,S3AF,RS1GF,2SC1623,1N4001L,AO4953,AO4832,ES1JF,IRLML2402,MMST4403,GBJ2510,DL4007,SS510F,RS1GL,ABS05,AO4606,HKTD70N04,SMCJXXXCA,D882,GBP310,AO4840,BAR43,ES2JF,HKTQ30N03,1SS355,S2303,A42,2SC2412,1N4148W,2SD1007,ES2JA,MB2F,ABS210,ER2MF,MMBT3904,MMBT3906,ES1GF,RS1AL,ER1JF,BAT54,ER1JL,MB2S,BAV99,MMBD4448W,ES1GL,MMBD914,RS1AF,BC848C,S3BF,MB1F,1SS184,1SS187,BC848A,MBR0520L,1SS181,BC848B,BAS40,GBP410,1N4004L,RS2BL,78M 系列,ES3JF,MB1S,LL4148,HKTE130N12,RS3DF,RS2BF,BC847B,BC847C,MB4F,2SC2873,S1AF,SI2312,BAV21WS,RS2JBF,S8050,BC847A,BAV70,AO3420,MMBT2907,AO3421,BCX51,MMBD4148,ER2JF,BCX53,BCX54,MB4S,BCX56,BAS16,HKTD80N10,RS3GF,BAS19,1N5819LWT,S9013,BC846C,S9014,BC846A,S9015,BC858B,PXT3904,SI2306,BC858C,BC846B,S3DF,SI2301,US1ML,SI2302,S9012,MMST5551,SI2300,PXT3906,BC858A,RS1BL,HKTD80N06,ER1GF,BAS21,RS2DL,SS8550,HKTQ30P03,ES1DF,KBP201,US1MF,RS2DF,ES1DL,BAV21W,RB551V-30,ER1GL,S9018,HKTD80N03,RS1BF,KBP204,RS1MF,RS1ML,UF2BL,MB6F,UF1A),FR1JBF,SS110,SMFXXXA,1N4007W,UF3DF,UF2BF,ER3JF,MB6S,1N4007L,SS34L,S9015W,1N4148WL,SS34A,SS22A,SS34B,SS34C,1N4148WS,SS34F,1N4148WT,BAV16W,MMBTA44,MMBTA42,S12309,S1BF,UF1AL,S12305,SS220,S12307,UF1AF,S12301,GSIM,ES2DF,ES1BF,SS5XC,S3GF,ES2DL,ES1BL,2N7002,MB8F,ES1D,ES1G,SS3XB,SS3XC,ES1J,HKTD50N06,UF3BF,M1L,GBU610,ES1M,GBJ610,FR3AF,HKTD50N03,SS24W,SS24L,MB8S,SS12L,ER1DF,BSS84,SS24B,SS36C,BAW56,S3JF,ES1AF,SS36F,SS24F,ES1AL,MMBD4148SE,ES2A,ER1DL,ES2B,UF2AL,SS36A,S1DF,FR2JBF,GBU1010,SS24A,SS36B,UF2AF,GBJ1010,FR3BF,AO9926A,S9014W,ES2BF,MMBT5551,SMAZ5V1-SMAZ39,ES2BL,ES1A,ES1B,ER1D,ER1G,MMBTA94,HKTG160N10,MMBTA92,RS2KF,ER1J,ES3M,GBU2010,FR2AF,ES1JBF,AO4812,2SC1815,FR2AL,ER2DF,1N4448W,BAS70WS,SS54A,ER1BF,SS54B,ES2AF,ER1BL,ER2A,ES2AL,ER2B,BC807,B5817WS,SS54F,ER2D,ER2DL,ES2D,BZT52BXXX,M4L,ES2J,B0520WS,RS2JF,B5819LWT,ES2M,FR3DF,UF3AF,AO4826,1N4007WS,FR2BF,SMFXXXCA,FR2BL,BAV23,HKT6216-3V3,RS2JL,S1GF,ER1AF,BC817,MMBD4148W,SS8050,S3KF,ER1A,ER1AL,ER1B,RS2MF,RS1KF,GBJ810,BZT52CXXX,1N5818,SS5XB,1N5817,1N5819,FR1AF,GBU810,SS54BF,B5818WS,FR1AL,SM15TXXXCA,RS1KL,ER2BF,FR1A,ER2BL,HKTE150N15,ER2AL,2SC1623 L6,2SC1623 L7,ER2J,2SC1623 L4,RS1JF,2SC1623 L5,FR2DF,ER2M,AO4803,FR1BF,HKTG150N03,HKTG150N06,HKTD15N10,FR2DL,AO4801,FR1BL,2SD2150,GBJ3510,RS1JL,ER2AF,FL8205,M7F,HKTQ65N03,S3MF
SGM DFAE Training--Charger
型号- SGM41563,SGM41522,SGM41566,SGM7SZ32,SGM41562B,SGM48751,SGM724,SGM41562,SGM41516,SGM41518,SGM41519,SGM41512,SGM41513,SGM4056X,SGM2203,SGM61060,SGM41513D,SGM41510,SGM41513A,SGM41511,SGM61020,SGM722,SGM324,SGM4056,SGM8770,SGM4890,SGM803B,SGM41541,SGM41542,SGM41543,SGM61230,SGM40666AS,SGM358,SGM42505,SGM3752,SGM2225,SGM2036S,SGM7SZ08,SGM7SZ04,SGM41523B,SGM41523C,SGM41600A,SGM41523A,SGM42500,SGM41570,SGM41523D,SGM41573,SGM40561,SGM41527,SGM41528,SGM41523,SGM2593D,SGM41600,SGM41524,SGM8199,SGM41526,SGM2536
完美抗击极限过载的同步降压转换器及多种升降压、充电IC
型号- SGM66099,SGM61164,SGM61230,SGM41510,SGM61163,SGM61020,SGM41511,SGM41512A,SGM61220,SGM61720,SGM41527,SGM61412A,SGM6612A,SGM41512,SGM41526,SGM6611C,SGM6611B,SGM6611A,SGM41509
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可定制变压器电压最高4.5KV，高频30MHz；支持平面变压器、平板变压器、OBC变压器、DCDC变压器、PLC信号变压器、3D电源、电流变压器、反激变压器、直流直流变压器、车载充电器变压器、门极驱动变压器等产品定制。
最小起订量： 100000 提交需求>
支持微型计算机 、便携式计算机显示设备、投影仪、打印设备、绘图仪、多用途打印复印机、扫描仪、计算机内置电源、电源适配器、充电器、服务器、收款机等产品中国强制性产品认证。
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