【应用】电流和功率检测芯片TPA620-VR-S应用于工业POE交换机，内置12位ADC，可感测36V的总线电压

时间： 2022-11-24 来源：世强

技术问答

客户的工业POE交换机上，采用用48V标准PoE供电，为了监控供电端的状况，需要一款芯片来监控电流和功率检测，参考的原理框图如下所示，要求可在0V~26V范围内感测总线中的分压，适用于低侧感测或CPU电源，由3V~5.5V单电源供电，具备I²C或SMBUS兼容接口，16个I²C编程地址。

根据客户的要求，推荐思瑞浦（3PEAK）的数字式电流和功率监测芯片-TPA620-VR-S，TPA620是一个电流和功率监视器，具有I²C或SMBUS兼容接口，该设备同时监测分流电压降和总线供电电压，其特征是：

感测从0V到36V的总线电压；
高侧或低侧感应；
报告电流、电压和功率；
高精度；
可配置平均选项；
16个可编程地址；
从2.7V到5.5V电压下运行；
10 PIN，MSOP封装；

整理出的TPA620-VR-S的主要参数如下表，方便工程师选型使用：

从上表可以看出，TPA620-VR-S的参数完全满足客要求，工作电压范围支持2.7-5.5V，完全满足客户要求的3V到5.5V，具备具备I²C 或SMBUS兼容接口，16个I²C编程地址，内置ADC，分辨率也可达到原理图要求的12bit，静态电流低至8μA。

关于TPA620-VR-S的典型性能曲线、具体各引脚定义、推荐框图、参数测量波形图等，可以参考规格书。比如下图就是工作频率与增益参数之间，在TA=25℃，VVS=3.3V，VIN+=12V，VSHUNT=(VIN+–VIN–)=32mV，VVBUS=12V，PGA=/1，and BRNG(1)= 1，条件下的曲线图：

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型号- TPC112S8,TPM815202,TPM815201,TPP363070Q,TPM815203,TPW3125,TPP206080,TPP206081,TPA5582Q,LMV321TP,TPA1285,TPT1051HV,TPV8368Q,TPC112S1,TPT7730F,TPT7742F,TPA1286,TPA5522,TPC112S8U,TPA5521,TPC112S4,TPL910A,TPP363071Q,TPC6240,LM324A,TPW3111,TPW3115,TPH2865Q,TPL6305-S,TPA5571Q,TPL51201-S,TPV6823,TPA6551N,TPA5512,TPT7731F,TPA5511,TPW3221,TPW3223,TP8485E,TPA183,TPM1525,TPC51701,TPT7740F,TPCMP251,TPCMP252,TPT1057VQ,TPL9308-S,TPS42Q20Q,TPW4425,TPQ80302,TPA5581N,TPA1295,TPA191,TPC5120,TPC5121,TPT7741F,LM2903D,TPT7710F,TPT1462VQ,TPT7722F,TPW3188Q,TPC2192,TPC2190,LM339A,LM2903A,TPM81520,TPL8651Q,TPM23513,TPC114S1,TPA5601,TP1562AL1-S,TPL9305-S,TPH2861Q,LM2904A,TPS42S40Q,TPM2025Q,TPS14P50,TPA2681,TPA2682,TPT3232E,TPL51200,TPM8837C,TPL51206,TPL910Q,TPM0596,TPM27524Q,TPP364092Q,TPC2160,TPC2161,TPA5621,TPM8837E,LMV324TP,TPT7720F,TPP2020,TPT7721F,TPL9053-S,TPM6501Q,TPM2015Q,TPL8033,TPL9208-S,TPL8652Q,LMV358TP,TPL8151,TPL8031,TPL51200-S,TPL8032,TPW4051,TPW4053,TPW4052,TPW4054,TPT1042VQ,TPT1255,TPL9052,TPL9053,TPT1256,LMV324B,TPA2644,TPP362072Q,TPA2641,TPA2642,TPQ50551Q,TPW4157,TPT485E,TP1561AL1,TPM6505Q,TPT485N,TPB4056A,TPB4056B,TPA2671,TPA2674,TPA2672,TPL9032,TP6001,TPP302080,TPA1882Q,TPP302085,TPP302084,TP6004,TPP302083,TPP302082,TP6002,TPP302081,TPM44273,TPB76200,TPT72616,TPT72617,TP17,TPT1044VQ,LMV331X,TPT1330,TPA8001-S,TPT1337,LM2901A-S,TPA1882,TPT1334,TPA1881,TPR6040,TPCMP271,TPCMP272,TPM6505,TPM2025,TPM8803,TPM6501,TP1564AL1-S,TPP363072Q,TP2191,TPTMP75,TPQ50571Q,TPP362071Q,LMV321B,TP5594,TP5592,TP5591,LMV358X,TP27,TPT1029Q,TP1562AL1,TPM2003,LMV358B,TPM2001,TPP362070Q,TPS05P50,LM2903DQ,LM2902A-S,TPA8000,TPT1028Q,TPA8002,TPA8001,TPP366091Q,TPQ5055Q,TPM23513B,TPM27517,TPA8003-S,TPP366090Q,TPM27533,TPP362083,TPP362084,TP1564AL1,TPP362085,TPA1831,TPT481,TPQ5057Q,TPA1832,TPT480,TPV710Q,TPP362080,TPM23514D,TPR434-S,TPP362081,TPT482,TPP362082,TPM27523,TPM27524,TPM27525,TPA1834,TPM27526,TPT488,TPL8032Q,TPT487,TPT486,TP2272,TPL740,TP2271,TPA8023,TPP60506,TPP60508,TPA626,TPAFE0808,TP2274,TPP361082,TPT1462Q,TPP361083,LM393A,TPA1864,TPA1862,TPP361080,TPA620,TPP361081,TPL8035Q,TPV8318,TPT9H111,TPA1861,TPT7730,TPT7731,LM2903A-S,TPL730,TPR70,TP5554,TPC2161M,TP5552,TP5551,TPR433-S,TPA7836B,TPV8308,TPL8034Q,TPT9H221,TPT7740,TPA8003,TPT7741,TPT7742,TPM215202,TPM215201,TP1282,TP1281,TPL720,TPL6305,TPP361064,TPM27201,TPP361065,TP1284,TPP361060,TPT1145Q,TPT1024Q,TPP361061,TPP361062,TPP361063,TPM215203,TPT7710,TPR6040-S,TP2261,TPL710,TPP00032,TPP00031,TP5534,TP1561AL1-S,TP5532,TP2262,TP5531,TPL8151-S,TPR433Q-S,TP2264,TPT7722,TPR50,TPT7720,LM2904A-S,TPT7721,TPM23514S,TPA8101,TPM5350MQ,TPP60308,TPL910A-S,TPL820,TP2112,TPK1032,TPM27224,TPM23514M,TPK1031,TPH2502,TPR434Q-S,TPH2501,TP2111,TPH2504,TPH2503,TPT1022Q,TPM27221,TPH2861,TPP05608,TPR33-S,TPM27217,TPL8031Q,TPM23514V,TPM21520Q,TPW4066,TPA6270,TPL810,TPA6271,TPL930,TP2124,TPT1057Q,TPM8860,TP2122,TPT1021Q,TP2121,TPT1042,TPR31,TPT1043,TPR33,TPA1811,TPT1051VQ,TPA1812,TPM8866,TPL8151Q,TPR35,TPA6581,TPA6582,TPC116S4,TPV708,TPV706,TPL920,TPA2031Q,TPC116S8,TPAFE51736S8,TPW1221,TP1242,TP1241,TPT1044Q,TPT4089,TPT71050,TPQ051007,TPP364090Q,TPC116S1,TPC502200,TPT7481,TPT7482,TPL9052-S,TPL910,TP2582,TP2581,TP2584,TPT1043Q,TPM5350BS,TPT1042V,TPM5350S,TPP364091Q,TPV821,TPT7487,TPT7488,TPM5350M,TP2262-S,TPM5350BM,LM2901A,TPV809,TPCMP761,TPCMP762,TPCMP764,TPV803,TPT1042Q,TPT4181,TPL9218-S,TPB7461,TPB7462,TPB7460,TPV811,TPV812,TPV810,TPQ05100,LM2902A,LMV393X,TPT71044,TPW3157A,TPA6584,TPM27282,TPAFE5162,TPC5180,TPAFE5161,TPAFE5160,TPT10283Q,TPAFE51760,TPP363080,TPP363081,TPT75176B,TPP363082,TPP363083,LM331A,TPT75176H,TPA2296,TPR431,TPA6534,TPR432,TPA5561,TPA5562,TPT75176A,TPA6531,TPA6532,TPT1051H,TPT1051Q,TPT9L484,TPT1145NQ,TPA6531N,TPAFEA008,TPC5121Q,TPC5160,TPC5161,TPT10285Q,TPM16050,LM321A,TPA5572Q,TP07A,TPA2295C,TPL8032-S,TPA6551,TPA6552,TPA6554,TPL5031,TPA5581,TPA5582,TPQ051004,LM358A,TPQ051003,TPQ051006,TPP366092Q,TPQ051005,TPQ051002,TPM21520,TPT4032,TPA5561Q,TPT4031,TPR431-S,TPM2803,TPC5120Q,TPV8348

选型指南 - 思瑞浦 - REV.17 - 2024/4/19 PDF 中文下载

思瑞浦（3PEAK）数据转换器选型表

高精度DAC/ADC：4~24Bit DAC,DNL小于正负1 LSB，兼容标准的SPI、QSPI、MICROWIRE总线方式。数字式电流/功率监测器：12/16bit，在整个工作温度范围内保证无失码。多通道可配置模数/数模转换器：集成4/8/12通道12bit ADC的可灵活配置的数模/模数转换芯片。

Throughput Rate(Msps)

INL

Offset Error(LSB, Max)

选型表 - 思瑞浦立即选型

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对照表 - 思瑞浦

3PEAK Pin-to-Pin Product（2020）

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对照表 - 思瑞浦 - 2020/03/27 PDF 英文下载

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选型指南 - 思瑞浦 - Rev.2 - 2023/9/22 PDF 英文下载

TPA620 TPA620-VR-S Bi-Directional Current and Power Monitor

型号- TPA620-VR-S,TPA620

数据手册 - 思瑞浦 - Revision A.02 - 2021/5/25 PDF 英文下载

TPA620 Bi-Directional Current and Power Monitor

型号- TPA620-VR-S,TPA620

数据手册 - 思瑞浦 - Rev.A.06 - 2022-12-30 PDF 英文下载查看更多版本

一个新项目是做工业POE交换机，用48V标准PoE供电，为了监控供电端的状况，需要一款芯片来监控电流和功率检测，要求3V~5.5V单电源供电，具备I2C或SMBUS兼容接口，请问是否有合适的型号推荐？

你好，推荐思瑞浦的数字式电流和功率监测芯片-TPA620-VR-S，它是一个电流和功率监视器，具有I2C或SMBUS兼容接口，该设备同时监测分流电压降和总线供电电压，工作电压2.7V到5.5V，相关的数据链接如下：https://www.sekorm.com/doc/3751244.html

技术问答发布时间 : 2023-02-02

一个新项目是做工业POE交换机，采用用48V标准PoE供电，为了监控供电端的状况，需要一款芯片来监控电流和功率检测，请问是否有合适的型号推荐？

你好，推荐思瑞浦（3PEAK）的数字式电流和功率监测芯片-TPA620-VR-S，它是一个电流和功率监视器，具有I2C或SMBUS兼容接口，该设备同时监测分流电压降和总线供电电压，从2.7V到5.5V电压下运行，MSOP-10封装，相关的数据链接如下：https://www.sekorm.com/doc/2471790.html

技术问答发布时间 : 2023-05-23

思瑞浦（3PEAK）车规芯片选型指南（中文）

目录- 公司简介车规芯片应用分布汽车产品列表汽车应用

型号- LM2904A-VS1R-S,TPL8032ADQ,TP1562AL1-SO1R-S,TPA2031Q,TPM27524Q-SO1R-S,TPL803133Q-DF6R-S,TPT1042V-SO1R-S,TPT7742-SOBR-S,TPH2861-DF4R-S,TPR6040F30-S3TR-S,TPM2025Q-FC1R-S,TPT1042Q-SO1R-S,TPA1881Q-S5TR-S,TPR6040F33-S3TR-S,LM2902A-TS2R-S,TPR33XX,TPA8001-SOAR-S,TPA8003-SOAR-S,TP1564AL1-SO2R-S,TPL905236-S5TR-S,TP2262L1-SO1R-S,TPT1043Q-SO2R-S,TPT1051VQ-DF6R-S,TPR6040FXX,TPT1051Q-SO1R-S,TPT774X,TPL803133Q-EV1R-S,LM2903DQ-SO1R-S,TPL8652FQ-ES1R-S,TPT1051Q-DF6R-S,LM2903A-SO1R-S,TPT1051VQ-SO1R-S,TPR3330-S3TR-S,TPT7741F-SO3R-S,TPL803133Q-ST4R-S,TPL803450Q,TPT7741F-SOBR-S,TPL803450Q-EV1R-S,TPR3312-S3TR-S,TPL803150Q-ST4R-S,TPL905218-S5TR-S,TPL905233-S5TR-S,TPT7720-SO1R-S,TPR6040F25-S3TR-S,TPT1043Q-DFKR-S,TPL905215-S5TR-S,TPR6040F20-S3TR-S,TPL8651Q-ES1R-S,LM2901A-SO2R-S,TPT1145NQ-SO2R-S,TPL9052XX,TPL8031XXQ,TPA2644-SO2R-S,LM2904A-TS1R-S,TPM650XAQ,TPL8151ADQ-ES1R-S,TPL865XQ,TPT772X,TPT1042Q-DF6R-S,TPT7721-SOBR-S,TPT1044V-SO1R-S,TPT1145Q-SO2R-S,TPR3325-S3TR-S,TPR431B-S3TR-S,TPR6040F50-S3TR-S,TPW3188Q,TPT7742F-SOBR-S,TPA1882Q-VR-S,TPL910ADJQ,TPR3320-S3TR-S,TPT7740F-SO3R-S,TPC5120Q-TS7R-S,TPL803150Q-DF6R-S,TPL910ADJQ-DF6R-S,TPV8368SAQ,TP1561AL1-S5TR-S,TPA1882Q-SO1R-S,TPA5561Q-S5TR-S,TPL905225-S5TR-S,TPL905228-S5TR-S,TPL8151ADQ,TPT7741-SSAR-S,LM2902A-SO2R-S,TP2261L1-S5TR-S,TPA2031Q-S5TR-S,TPM2025Q,TPL803150Q-EV1R-S,TPM27524Q-DF4R-S,LM2903A-TS1R-S,TPV8368SAQ-S6TR-S,TPT1145NQ,TP1562AL1-VS1R-S,TPL803133-ST4R-S,TPT104XQ,TPR3333-S3TR-S,TPL905230-S5TR-S,TPT1042VQ-SO1R-S,LM2903A-VS1R-S,TPM27524Q-EV1R-S,TPM27524Q,TPR6040F40-S3TR-S,TPT7721-SO1R-S,LM2901A-TS2R-S,TPM6501AQ-S5TR-S,TPL905212-S5TR-S,TPT7720F-SO1R-S,TPA188XQ,TPT1145NQ-DFKR-S,TPR431B,TPM6505AQ-S6TR-S,TPA5561Q,TPT7741-SOBR-S,TPT1051VQ,TPL8032ADQ-ES1R-S,TPT1042VQ-DF6R-S,LM2904A-SO1R-S,TPW3188Q-TS3R-S,TPC5120Q,LM2903DQ,TPR3340-S3TR-S

选型指南 - 思瑞浦 - Rev.2 - 2023/6/15 PDF 中文下载