【应用】圣邦微SGM4075-1电池脱离及冷复位开关在电池供电IOT产品中的设计应用
笔者有参与一款货物追踪物联网IOT产品的研发,产品基于移远GSM/GPRS/GNSS 模块MC20设计,使用锂电池供电。产品采用密封防水结构设计,电池密封。设计中MC20即作为通信模组使用,也作为系统主控使用。由于利用了MC20的OPEN CPU功能,MC20休眠电流无法做到很低,产品出厂时,电池内置。设计中选用了圣邦微SGM4075-1电池脱离及冷复位开关降低产品在仓储或运输过程中电池电量消耗,提升用户体验。
SGM4075-1电池脱离及冷复位开关主要特性如下:
1、 可适应1.5V~5.5V的电压工作范围
2、 最大 6A 连续工作电流;
3、 最低导通电阻为18mΩ,非常适合电池供电产品选用;
4、 关机状态典型电流为0.7uA,工作状态典型电流为1uA,可减少电池电量额外消耗;
5、 具有在受控电池脱离时输出端主动放电功能,可减少系统启动故障;
6、 支持WLCSP封装,尺寸1.31mm×1.62mm,非常适合IOT产品选用;
SGM4075-1电池脱离及冷复位开关实际应用电路和控制时序如图1所示,电路中VCCBAT为电池电压,VCCOUT为SGM4075-1受控输出。SW1为系统开关机按键,可实现本地开关机;NOFF信号连接主控MC20的GPIO,实现产品远程关机功能;KEY_SOS_OFF信号可实现按键检测。
图1 SGM4075-1实际应用电路和控制时序
笔者使用是德科技的直流电源分析仪N6705C对电池脱离状态电流消耗情况进行测试,测试数据见图1所示。电池脱落状态产品平均电流在0.9uA左右,采用该方式可明显降低产品在仓储或运输过程中非必要的电池电量消耗,延长电池工作寿命。
图2 电池脱落状态下产品平均电流数据
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鼎阳科技(Siglent)射频测试测量仪器选型指南(英文)
描述- SIGLENT has many patent technologies. We are dedicated to develop sophisticated and high quality digital oscilloscopes, waveform generators, RF signal generators, handheld digital oscilloscopes, spectrum analyzers, vector network analyzers and DC power supplies, DC Electronic Loads, digital multimeters. We strive to deliver the highest quality of customer service and satisfaction to our customers.
型号- SSA5000-IFO,F604FS,SSU5264A,SSA5000-DMA,SVA1000X SERIES,F505TS,SIGIQPRO,ANT-DA1,SSG5060X,SDS7000A,SHA850-DMA,BAG-S2,SMAF-SMA-26L,SDM3065X,SNA5022A,SSA5000A,SDS2000X HD,SSA3000X SERIES,SEM5012A,SSA3032X PLUS,SEM5024A,RB3X25,SSU5263A,SSA3000XP-DMA,SNA5012A,SDG2000X,Y504FS,F603FE,SVA1075X,SSG3032X-IQE,SSG5085A,SSG5000XV_B150,SHA850-VNA,SSG3021X,SSA3000XR-WDMA,SDL1030X,SSU5000A,SVA1000X-AMA,SHA850-GPS,QG-SSA3000X,SVA1000X-AMK,UKITSSA3X,SSA5000-PU,SSA5000-EMI,V26-N35FA35F-25IN,SSG5080A-F85,SSA3075X-R,TG-SSA3000X,SNA5000A,SSA5000-PN,ASP-18,SNA5000-SA,SSU5266A,SSA3000-REF,SDS1000X-E,SEM5034A,SEM5022A,SSU5501A,EMI-SSA3000X,SSG3032X,SHA850-BIAS,SSU5265A,SDG6000X,SNA5014A,SNA5002A,SSA5000-P3,SSA5000-P5,SDL1020X-E,SSA3000X-R,SSG5083A,SPD1000X,SSA-RMK,SSA5083A,F503ME,SSG6087A,SSA3000XR-AMA,SSG5000X,SSA3000XR-AMK,N-SMA-6L,SDS800X HD,SSA3050X-R,SPS5000X,SEM5004A,SSA3000X PLUS,SSM5142A,SIGIQPRO-IOT,SSA5000-F5,SDG1000X,SNA-TB01,SNA5004A,SDM3045X,F604TS,SIGIQPRO-BT,SSG5000X-PT,F604TY,SSG6085A,SSA5000-RTA1,SSG5080A-LP,SDS2000X PLUS,F504TS,SSU5262A,SSA5000-IQA,BAG-SCC,SSG-RMK,N-BNC-2L,SVA1032X,SNA5000-SMM,SSM5144A,SDM3055,SEM5014A,SEM5002A,SSU5261A,SSA3000XP-TG,SSA5000-B40,SSA3000XP-EMI,SHA800-BAT,SSG5000A,AMK-SSA3000X,SDL1030X-E,SSM5000A,V26-N35MN35F-25IN,SSA3032X-R,SSA5000-BT,SRF5030,SSG6083A,SSU5183A,SVA1000X-DMA,F603ME,SSM5122A,SDS3000X HD,SDS1000X HD,SDG7000A,SSG6000A,SSU5182A,REFL-SSA3000X,USB-GPIB,SHA800-AP,SDS5000X,SSG3021X-IQE,SSG5080A-PU,SSG5080A-PT,F503FE,SSA5000-AMA,Y504MS,SHA851A,SVA1000X-EMI,ADP-26,SSA3021X,SHA850-AMA,SSA5000-AMK,SVA1000X,SSM5342A,SPD3000X,RBSSA3X20,SSG5040X-V,SSM5124A,SHA850-AMK,SMA-SMA-18L,SSU5184A,SSA3000XR-RT40,SSG6000A-RMK,SNA5000-TDR,SSA3075X PLUS,ANT-GPS1,SHA850A,N-N-6L,SSA3032X,SDS1104X-U,F504FS,SNA5000-TDA,SRF5030T,SDL1020X,SDS1000CML+,SSG5000XV-IOT,SSG5040X,SSG3000X-21BW32,SSG6080A-F85,SSA3000XR-EMI,SSG5000X_F60,SSA5000-NF,2.92F-2.92F-40A,N-N-18L,SSA3000XP-AMA,SIGIQPRO-OFDM,SEM5032A,SSU5503A,10M_OCXO_L,SHA852A,ADP-18,SDS2000X-E,SDS6000L,F504MS,SSG3000X-PT,ASP-26,SHA850-SOR,SSG5060X-V,SSM5321A,SVA1015X,SSA5085A,SSU5502A,SDS6000A,N-SMA-18L,SSU5181A,SSG6080A-PT,SSA3021X PLUS,SHA800-BG,SSG6080A-PU,SNA5000-HPR,NSD28,SNA5032A,SSA3015X PLUS,SSG3000X-IQE-21BW32,SHA850-GPSM,F604MS,SMA-SMA-26L,SDS2000X,SSG3000X,SDG800,SSA3000X,SSA3000XP-AMK,SHA850-F2,SPD3303C,SSU5504A
SGMICRO负载开关选型表
24V、5.5V负载开关,最大负载电流6A,限流值可调,多种小封装。防反向电压,70热插拔芯片。
产品型号
|
品类
|
Current Limit(mA)
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Vcc (Min)(V)
|
Soft-Start
|
Iq (μA)
|
Package
|
Vcc (Max)(V)
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Continuous Output Current (mA)
|
SGM2521
|
Load Switch
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Programmable (260~2000)
|
4.5
|
Soft-Start
|
170
|
SOIC-8 TDFN-2×3-8BL
|
24
|
2000
|
选型表 - SGMICRO 立即选型
【方案】EFR32无线通信模块优选元器件方案
描述- 本方案主要解决无线通信技术薄弱的客户设计开发2.4GHz 无线通信应用的产品。世强提供的EFR32无线通信模块是Silicon Labs 厂家无线评估套件的降低成本简化版本,性能指标和原厂DEMO 保持一致。采用Simplicity Studio 内嵌无线配置插件和内嵌MCU 外围配置插件,图形界面化设置生成无线配置文件和MCU 外围配置文件。
型号- 14585A,N6705C,33522B,X1A000061000200,N9320B,PGB1010402KR,PGB1010603KR,HZ0603C601R-10,PGB101,N9000B,Q22FA1280014700,N9310A,HZ0603D102R-10,CX3300,SGM2040,N6781A,EFR32MG12P433F1024GM48-C,SGM2034,SGM2040-3.3YN5G/TR,SGM2034-3.3YN3G/TR,EFR32MG1B232F256GM32-C,EFR32
【选型】圣邦微芯片SGM4075+SGM820用于电源重启,有效解决MCU程序跑飞问题
针对电源重启的应用,本文推荐大家使用圣邦微推出的冷复位芯片SGM4075+集成看门狗的复位芯片SGM820系列产品:内部三个信号输入接口根据逻辑状态的改变可分别使芯片进入休眠,复位,断开的等状态;具备看门狗输入和开漏的看门狗超时输出。
器件选型 发布时间 : 2022-11-04
【方案】SUB-G无线通信模块优选元器件方案
描述- 本方案主要解决无线通信技术薄弱的客户设计开发无线通信应用的产品。世强提供的SUB-G无线通信模块是Silicon Labs厂家无线评估套件的降低成本简化版本,性能指标和原厂DEMO保持一致。通过模块上预留的测试点,可以外扩LCD显示,按键和LED指示,射频收发器GPIO性能指标测试。模块保留主要通信功能和人机交互功能1个LED和1个按键,其他附加功能通过测试点扩展完全可以实现原厂DEMO板所有功能
型号- SI4438-C2A-GM,SI4463-C2A-GM,N6705C,EFM8SB,N9320B,PGB1010402KR,HZ0603C601R-10,N9310A,HZ0603D102R-10,CX3300,SGM2040,N6781A,EFM8SB20F64G-B-QFN32,SGM2034-3.3YN3G/TR,14585A,33522B,X1A000061000200,PGB1010603KR,PGB101,N9000B,X1E000021048100,EFM8SB20F16G-B-QFN32,SGM2034,SI446X,SGM2040-3.3YN5G/TR
【产品】采用WLCSP-1.31×1.62-12B封装的SGM4075-2冷复位及电池脱离开关,典型导通电阻为20mΩ
SGMICRO(圣邦微电子)的SGM4075-2为全新设计冷复位及电池脱离开关。该电路用来保证装箱时电池处于近乎与负载脱离的状态,用于延长成品仓储时间。SGM4075-2具有热关断保护和较低的导通阻抗,工作温度范围为-40℃至+85℃。
新产品 发布时间 : 2019-09-21
【经验】SGM4075-1电池脱离开关输出尖峰电压的整改经验
客户设计一款co检测仪,采用3.7V锂电池供电,由于存在长距离运输和间接性工作,为了保证电池的长时间使用,应用了圣邦微SGM4075-1电池脱离开关。由于内部MOS管寄生电容的充放电现象存在瞬间输出尖峰的现象,会出现系统误判工作现象。本文就将主要针对这一输出尖峰现象进行分析并给出解决方法。
设计经验 发布时间 : 2020-08-07
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