kms9311b移动电源五合一单芯片

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pb331芯片手册

pb331芯片手册

pb331芯片手册第一章:引言PB331芯片是一种高性能、低功耗的集成电路芯片,广泛应用于各种电子设备中。

本手册旨在为用户提供关于PB331芯片的详细信息、技术规格和使用指南,以便用户能更好地了解和应用该芯片。

第二章:技术规格2.1 芯片尺寸:PB331芯片的精确尺寸为Xmm x Ymm,适用于各种设备。

2.2 工作电压:芯片正常工作电压为V1.2 - V1.8,超过或低于此范围可能导致芯片性能下降。

2.3 功耗:PB331芯片具有低功耗特性,在正常工作条件下,平均功耗为W,可显著延长设备电池寿命。

2.4 通信接口:芯片支持XX协议和YY协议的通信接口,确保数据传输的可靠性和稳定性。

2.5 内存容量:芯片内置XXGB的存储空间,可满足用户对大容量数据存储的需求。

第三章:功能特性3.1 高性能处理能力:PB331芯片采用先进的处理器架构,具有卓越的数据处理能力,可以快速、高效地完成各种复杂计算任务。

3.2 强大的图形处理能力:芯片内置先进的图形处理单元,支持多种图形算法和效果,能够呈现出更加逼真、细腻的图像效果。

3.3 多功能IO接口:PB331芯片具备丰富的IO接口,可与外部设备进行灵活连接,并支持多种外设的控制和数据交互。

3.4 高速数据传输:芯片支持高速数据传输,具备快速的数据读写能力,提升了设备的响应速度和用户体验。

3.5 低功耗设计:PB331芯片在设计上充分考虑了能源消耗,采用一系列节能机制,有效降低了功耗,延长了电池使用时间。

第四章:软件支持4.1 开发工具:针对PB331芯片,提供了一套全面、易用的开发工具,包括编译器、调试器和仿真器等,帮助开发者更好地开发和调试应用程序。

4.2 操作系统支持:PB331芯片兼容多种操作系统,包括Windows、Linux和Android等,为用户提供了更多的操作系统选择。

4.3 驱动程序:为了方便用户与PB331芯片进行交互,我们提供了相应的驱动程序,可实现与各种外设的无缝连接和数据传输。

小米二合一充电宝拆解说明书

小米二合一充电宝拆解说明书

暴力拆解小米最新二合一充电宝作者:EEWORLD社区坛友Littleshrimp 2018年年底,也就是12月10号,小米二合一充电宝问世,它既是移动电源,又是充电器,给内部电池充电的同时还可为手机充电,实为出行必备神器,小米官方报价99元。

相信大家对二合一移动电源的内部构造很是感兴趣,EEWORLD社区坛友Littleshrimp就拆解了小米的此款二合一充电宝,让大家一饱眼福。

内部包含2颗18650电芯,总容量为5000mAh,作为移动电源充电时支持5V/2.4A,9V/1.2A,12V/1三种输出,作为充电器时支持5V/3A,9V/2A,12V/1.5A最大输出功率能达到18W。

包装使用和小米其它产品一样的白色包装。

包装正面包装背面拆箱后里边一个电源和一张说明书,看来需要自己配USB充电线了。

拆箱电源正面只有一个电量检查按键看起来很简洁,侧面一侧为双USB口,可同时为2台设备充电,另一侧为市电接口,支持100V-240V50/60Hz宽电源输入。

正面市电接口和标识USB面板USB面板与主壳体使用胶水粘接,没有螺丝,拆解过程比较暴力。

拆除USB面板过程拆开USB面板后,断开电池保护壳与主壳体的胶水才可以脱下外套。

内部正面内部背面内部侧面取下电池保护壳与PCB上的螺丝后可以看到完整的PCB背面,PCB背面主要用于放置开关电源部分的器件,包括一个高频变压器、2个USB口和几颗电容电感等器件,加上背面的几个IC就能在26mm*60mm*20mm的尺寸内能够实现18W的功率输出。

去掉电池螺丝后的背面去掉电池螺丝后的正面电路上最醒目的要属这颗INN2215K芯片,看标识应该是PI家族的一款电源芯片。

查询数据手册得知,INN2215K是一款集成了650V MOSFET、同步整流、反馈和恒功率特性的适合USB-PD和QC3.0应用的离线式反激恒压/恒流开关IC,输出功率最大可达20W。

INN2215K数据手册从资料可以了解到INN2215K是PI家族的InnoSwitch™-CP系列IC,使用了磁隔离技术,非常适合小体积高功率密度的应用。

移动电源各有优缺点 测评

移动电源各有优缺点 测评

移动电源:各有优缺点性价比是王道川北在线-川北城市生活网 2013-10-17 19:35 来源:赛迪网川北在线核心提示:天猫4款热销移动电源横评随着电子产品的迅猛发展,移动电源经历了普通电源、智能移动电源后,迈进超智能移动电源发展阶段(资料来源于百科)。

而由于巨大的市场份额,移动电源成为电子配件行业颇受重视的门类,也成为电子消费者的必备品。

不过许多消费者对移动电源并天猫4款热销移动电源横评随着电子产品的迅猛发展,移动电源经历了普通电源、智能移动电源后,迈进超智能移动电源发展阶段(资料来源于百科)。

而由于巨大的市场份额,移动电源成为电子配件行业颇受重视的门类,也成为电子消费者的必备品。

不过许多消费者对移动电源并不了解,导致往往购买到劣质产品。

为帮助消费者更好地挑选移动电源,我们针对天猫里移动电源的销量占比以及搜索热度,挑选了4个品牌,包括:品能PN-913、罗马仕sense4、力杰 V8、飞毛腿TP BM788移动电源,从电源重量、尺寸、价格、性能等维度进行横向对比,为大家分析与讲解一下目前主流移动电源产品。

从这4款单品月销售来看,总销量已经达到了20多万,占据了整个移动电源销量约40%的份额;所以这里的4款产品就已经很好地代表着整个移动电源的发展趋势。

(4款淘宝热销移动电源)如上图所示,其中,品能PN-913单品月销量就已经达到8.2W;排名第二罗马仕sense 4销量5.3W;排名第三品能PN-913月销量5.2W;排名第四飞毛腿TP:2.6W;以评论数量估算产品销售额。

品能PN-913单品销售额约为 19W*99元=1881万元;罗马仕ROMOSS sense 4评论数量14W,14W*79.9元=1118.6万元。

这就是为何越来越多的厂商仍狂推出新款移动电源产品的原因!!!下面我们就将对这4款热销宝贝进行较为详细的评测。

但因为内容较多详细,文章篇幅也不短。

我们将评测核心参数汇总提前。

大家可以通过以下表格很清楚地看到4款电源的对比。

迅瑞 带充放电管理的轻触三功能LED驱动芯片YX8283B 产品说明书

迅瑞 带充放电管理的轻触三功能LED驱动芯片YX8283B 产品说明书

March 2017 - REVISED April 2019带充放电管理的轻触三功能LED驱动芯片特性全亮、25%亮、暴闪、灭循环轻触三功能LED驱动 100mΩ导通电阻,最大1.8A LED驱动电流2.4V电池低压保护低压保护下电池漏电流小于0.1μA高达1A的充电电流具有可在无过热危险的情况下实现充放电速率最大化的热调节功能精度达到1%的4.2V预设充电终止电压自动再充电2.9V涓流充电支持边充电边放电,续航照明时间软启动限制浪涌电流ESOP8绿色封装应用范围手电筒LED照明电池充放电管理其它手持设备描述YX8283B是一款完整的采用单节锂离子电池供电的LED轻触三功能驱动芯片。

其内部集成了锂电池充放电管理电路,可提供高达1A的充电电流、1.8A的放电电流及充放电保护功能,可驱动单颗LED实现全亮、25%亮、暴闪和灭循环的轻触三功能切换控制。

YX8283B内部集成了电池过放保护功能,当电池电压低于2.4V时,YX8283B进入过放保护状态,此时电池端的漏电小于0.1μA,可有效延长电池的放电时间。

YX8283B内部集成了专用于锂电池的保护功能电路,可防止充放电过程中的短路、过流、过温等异常情况对电池和芯片的损坏。

YX8283B采用绿色环保的ESOP8封装以及最少6个外围器件可有效减小电路PCB布板空间。

YX8283B可工作于-40°C to +85°C。

典型应用March 2017 - REVISED April 2019订购信息器件型号 订购号 封装描述 环境温度 封装标记包装选择 包装数量 YX8283BYX8283BAQGRESOP8-40℃ to +85℃Tape and Reel3000引脚信息YX8283BIN NC KeyBATESOP8表 1. 引脚描述引脚 名称 引脚功能描述1 IN 充电电压输入端,可外接适配器,提供最大1A 充电电流。

2 NC 未用引脚。

移动电源五合一方案

移动电源五合一方案

移动电源五合一方案1. 引言移动电源是现代人们日常生活必备的电子设备之一,它可以为各种便携式电子设备(如手机、平板等)提供电力支持。

然而,由于现有市场上移动电源产品多样,功能各异,以及人们对便捷性和多功能性的需求不断增加,因此设计一款五合一的移动电源方案成为迫切需要。

本文将介绍一种移动电源五合一方案,该方案融合了无线充电、USB C接口、快速充电、多输出接口和智能芯片控制等功能,使移动电源具备更高效、更方便的使用体验。

2. 方案细节2.1 无线充电功能移动电源五合一方案将具备无线充电功能,用户只需将支持无线充电的设备放置在移动电源上,即可实现无线的充电功能。

该方案采用了先进的Qi无线充电技术,提供了高效便捷的充电方式。

通过这种方式,用户无需使用额外的充电线,减少了充电时的麻烦。

2.2 USB C接口为了满足现代设备的需求,该移动电源方案配备了USB C接口。

USB C接口具备更高的传输速度和更大的功率输出能力,可以实现快速充电和高效传输数据。

用户可以使用USB C线充电,也可以通过USB C接口连接其他设备进行数据传输。

2.3 快速充电为了提升用户的充电效率,移动电源五合一方案支持快速充电功能。

方案中采用了智能识别技术,能够根据设备充电需求自动调节输出功率,实现更快的充电速度。

同时,方案还具备快速充电保护功能,可以避免过度充电和过热问题,保护设备的使用安全。

2.4 多输出接口该移动电源方案提供了多种输出接口,以满足用户不同设备充电需求。

除了USB C接口,方案还配备了USB A接口和Micro USB接口,用户可以根据实际需求选择合适的接口进行充电。

这些输出接口可以同时支持多个设备的充电,提高了移动电源的实用性。

2.5 智能芯片控制移动电源五合一方案采用了智能芯片控制技术,实现了对电源的智能管理。

该方案可以实时监测电源的电量,显示剩余电量,并提供智能充电保护功能。

当电量过低或过高时,方案会自动停止充电,避免对设备和电池的损害。

三合一移动电源方案

三合一移动电源方案

三合一移动电源方案引言移动电源是一种便携式电源设备,可以充电并储存电能以供用户在户外或旅行中使用。

在现代社会中,移动电源已经成为人们日常生活中必不可少的物品之一。

随着科技的不断发展和用户需求的增加,越来越多的功能被集成到移动电源中,例如无线充电、快速充电和多种输出接口等。

本文将介绍一种创新的三合一移动电源方案,为用户带来更便捷和多功能的使用体验。

1. 方案概览三合一移动电源方案主要包括以下三个方面的功能和特点:1.无线充电功能:通过在移动电源的外壳上嵌入无线充电模块,用户可以将支持无线充电功能的设备直接放置在移动电源上进行充电,无需使用繁琐的充电线。

这种无线充电方案采用了 Qi 标准,兼容性广泛。

2.快速充电功能:为了满足用户对快速充电的需求,移动电源内部搭载了高转换效率的快速充电模块,能够提供更快速、更高效的充电体验。

通过使用智能芯片控制和多种保护机制,保证了移动电源的安全性和稳定性。

3.多种输出接口:为了适配不同类型的设备和用户需求,移动电源设计了多种输出接口,包括 USB-A、USB-C 和 Micro USB 等。

这些接口可以同时供电,并且支持快速充电协议,兼容市面上大部分智能设备。

2. 技术细节2.1 无线充电无线充电模块主要由发射端和接收端组成。

移动电源的外壳上嵌入了发射端,而设备的背面则嵌入了接收端。

通过电磁感应原理,发射端和接收端之间建立起电磁耦合,实现无线充电功能。

为了满足用户对无线充电的高效和安全需求,无线充电模块使用了 Qi 标准。

它提供了6.78 MHz的工作频率和5V的工作电压,以实现快速且稳定的充电效果。

同时,智能芯片的控制和多重保护机制保证了无线充电的安全性,例如过热保护和过电流保护等。

2.2 快速充电快速充电模块采用了高转换效率的充电技术,能够更快地将电源充满。

通过控制充电电压和电流的匹配,可以实现最大限度地提高充电效率。

同时,智能芯片的控制和多重保护机制确保了快速充电的稳定性和安全性,例如逆向连接保护和过压保护等。

XB5352G 贴片SOT23-5 单节锂电池充电保护芯片 电源管理IC

XB5352G 贴片SOT23-5 单节锂电池充电保护芯片 电源管理IC

XB5352G ____________________________________________________________________________________________________________________________ One Cell Lithium-ion/Polymer Battery Protection ICGENERAL DESCRIPTIONThe XB5352G product is a high integration solution for lithium-ion/polymer battery protection.XB5352G contains advanced power MOSFET, high-accuracy voltage detection circuits and delay circuits.XB5352G is put into an ultra-smallSOT23-5 package and only oneexternal component makes it an ideal solution in limited space of battery pack. XB5352G has all the protection functions required in the battery application including overcharging, overdischarging, overcurrent and load short circuiting protection etc. The accurate overcharging detection voltage ensures safe and full utilization charging. The low standby current drains little current from the cell while in storage.The device is not only targeted for digital cellular phones, but also for any otherLi-Ion and Li-Poly battery-powered information appliances requiring long-term battery life. FEATURES·Protection of Charger Reverse Connection·Protection of Battery Cell Reverse Connection·Integrate Advanced Power MOSFET with Equivalent of 45mΩ R SS(ON)·Ultra-small SOT23-5 Package ·Only One External Capacitor Required·Over-temperature Protection ·Overcharge Current Protection ·Two-step Overcurrent Detection: -Overdischarge Current-Load Short Circuiting·Charger Detection Function·0V Battery Charging Function- Delay Times are generated inside ·High-accuracy Voltage Detection ·Low Current Consumption- Operation Mode: 2.8μA typ.- Power-down Mode: 1.5μA typ. ·RoHS Compliant and Lead (Pb) FreeAPPLICATIONSOne-Cell Lithium-ion Battery PackLithium-Polymer Battery PackFigure 1. Typical Application CircuitORDERING INFORMATIONNote: “YW” is manufacture date code, “Y” means the year, “W” means the weekPIN CONFIGURATIONFigure 2. PIN ConfigurationPIN DESCRIPTIONABSOLUTE MAXIMUM RATINGS(Note: Do not exceed these limits to prevent damage to the device. Exposure to absolute maximum rating conditions for long periods may affect device reliability.)ELECTRICAL CHARACTERISTICSTypicals and limits appearing in normal type apply for T A= 25o C, unless otherwise specifiedFigure 3. Functional Block Diagram FUNCTIONAL DESCRIPTIONThe XB5352G monitors the voltage and current of a battery and protects it from being damaged due to overcharge voltage, overdischarge voltage, overdischarge current, and short circuit conditions by disconnecting the battery from the load or charger. These functions are required in order to operate the battery cell within specified limits.The device requires only one external capacitor. The MOSFET is integrated andits R SS(ON) is as low as45mΩtypical. Normal operating modeIf no exception condition is detected, charging and discharging can be carried out freely. This condition is called the normal operating mode.Overcharge ConditionWhen the battery voltage becomes higher than the overcharge detection voltage (V CU) during charging under normal conditionand the state continues for the overcharge detection delay time (t CU) or longer, theXB5352G turns the charging control FEToff to stop charging. This condition is called the overcharge condition. The overcharge condition is released in the following two cases:1, When the battery voltage drops below the overcharge release voltage (V CL), the XB5352G turns the charging control FET on and returns to the normal condition.2, When a load is connected and discharging starts, the XB5352G turns the charging control FET on and returns to the normal condition. The release mechanism is as follows: the discharging current flows through an internal parasitic diode of the charging FET immediately after a load is connected and discharging starts, and the VM pin voltage increases about 0.7 V (forward voltage of the diode) from the GND pin voltage momentarily. TheXB5352G detects this voltage and releases the overcharge condition. Consequently, in the case that the battery voltage is equal to or lower than the overcharge detection voltage (V CU), the XB5352G returns to the normal condition immediately, but in the case the battery voltage is higher than the overcharge detection voltage (V CU),the chip does not return to the normal condition until the battery voltage drops below the overcharge detection voltage (V CU) even if the load is connected. In addition, if the VM pin voltage is equal to or lower than the overcurrent 1 detection voltage when a load is connected and discharging starts, the chip does not return to the normal condition.Remark If the battery is charged to a voltage higher than the overcharge detection voltage (V CU) and the battery voltage does not drops below the overcharge detection voltage (V CU) even when a heavy load, which causes an overcurrent, is connected, the overcurrent 1 and overcurrent 2 do not work until the battery voltage drops below the overcharge detection voltage (V CU). Since an actual battery has, however, an internal impedance of several dozens of mΩ, and the battery voltage drops immediately after a heavy load which causes an overcurrent is connected, the overcurrent 1 and overcurrent 2 work. Detection of load short-circuiting works regardless of the battery voltage.Overdischarge ConditionWhen the battery voltage drops below the overdischarge detection voltage (V DL) during discharging under normal condition and it continues for the overdischarge detection delay time (t DL) or longer, theXB5352G turns the discharging control FET off and stops discharging. This condition is called overdischarge condition. After the discharging control FET is turned off, the VM pin is pulled up by the R VMD resistorbetween VM and VDD in XB5352G. Meanwhile when VM is bigger than 1.5V (typ.) (the load short-circuiting detection voltage), the current of the chip is reduced to the power-down current (I PDN). This condition is called power-down condition. The VM and VDD pins are shorted by theR VMD resistor in the IC under the overdischarge and power-down conditions. The power-down condition is released when a charger is connected and the potential difference between VM and VDD becomes 1.3 V (typ.) or higher (load short-circuiting detection voltage). At this time, the FET is still off. When the battery voltage becomes the overdischarge detection voltage (V DL) or higher (see note), the XB5352G turns the FET on and changes to the normal condition from the overdischarge condition.Remark If the VM pin voltage is no less than the charger detection voltage (V CHA), when the battery under overdischarge condition is connected to a charger, the overdischarge condition is released (the discharging control FET is turned on) as usual, provided that the battery voltage reaches the overdischarge release voltage (V DU) or higher. Overcurrent ConditionWhen the discharging current becomes equal to or higher than a specified value (the VM pin voltage is equal to or higher than the overcurrent detection voltage)during discharging under normal condition and the state continues for the overcurrent detection delay time or longer, theXB5352G turns off the discharging control FET to stop discharging. This condition is called overcurrent condition. (The overcurrentincludes overcurrent, or load short-circuiting.)The VM and GND pins are shorted internally by the R VMS resistor under the overcurrent condition. When a load is connected, the VM pin voltage equals the VDD voltage due to the load.The overcurrent condition returns to the normal condition when the load is released and the impedance between the B+ and B- pins becomes higher than the automatic recoverable impedance. When the load is removed, the VM pin goes back to the GND potential since the VM pin is shorted the GND pin with the R VMS resistor. Detecting that the VM pin potential is lower than the overcurrent detection voltage(V IOV), the IC returns to the normal condition.Abnormal Charge Current DetectionIf the VM pin voltage drops below the charger detection voltage (V CHA) during charging under the normal condition and it continues for the overcharge detection delay time (t CU) or longer, the XB5352G turns the charging control FET off and stops charging. This action is called abnormal charge current detection. Abnormal charge current detection works when the discharging control FET is on and the VM pin voltage drops below the charger detection voltage (V CHA). When an abnormal charge current flows into a battery in the overdischarge condition, the XB5352G consequently turns the charging control FET off and stops charging after the battery voltage becomes the overdischarge detection voltage and the overcharge detection delay time (t CU) elapses.Abnormal charge current detection is released when the voltage difference between VM pin and GND pin becomes lower than the charger detection voltage (V CHA) by separating the charger. Since the 0 V battery charging function has higher priority than the abnormal charge current detection function, abnormal charge current may not be detected by the product with the 0 V battery charging function while the battery voltage is low.Load Short-circuiting conditionIf voltage of VM pin is equal or below short circuiting protection voltage (V SHORT), the XB5352G will stop discharging and battery is disconnected from load. The maximum delay time to switch current off is t SHORT. This status is released when voltage of VM pin is higher than short protection voltage (V SHORT), such as when disconnecting the load.Delay CircuitsThe detection delay time for overdischarge current 2 and load short-circuiting starts when overdischarge current 1 is detected. As soon as overdischarge current 2 or load short-circuiting is detected over detection delay time for overdischarge current 2 or load short- circuiting, the XB5352G stops discharging. When battery voltage falls below overdischarge detection voltage due to overdischarge current, the XB5352G stop discharging by overdischarge current detection. In this case the recovery of battery voltage is so slow that if battery voltage after overdischarge voltage detection delay time is still lower than overdischarge detection voltage, the XB5352G shifts to power-down.Figure 4. Overcurrent delay time0V Battery Charging Function (1) (2) (3) This function enables the charging of a connected battery whose voltage is 0 V by self-discharge. When a charger having 0 V battery start charging charger voltage(V0CHA) or higher is connected between B+ and B- pins, the charging control FET gate is fixed to VDD potential. When the voltage between the gate and the source of the charging control FET becomes equal to or higher than the turn-on voltage by the charger voltage, the charging control FET is turned on to start charging. At this time, the discharging control FET is off and the charging current flows through the internal parasitic diode in the discharging control FET. If the battery voltage becomes equal to or higher than the overdischarge release voltage (V DU), the normal condition returns. Note(1) Some battery providers do not recommend charging of completely discharged batteries. Please refer to battery providers before the selection of 0 V battery charging function.(2) The 0V battery charging function has higher priority than the abnormal charge current detection function. Consequently, a product with the 0 V battery charging function charges a battery and abnormal charge current cannot be detected during the battery voltage is low (at most 1.8 V or lower).(3) When a battery is connected to the IC for the first time, the IC may not enter the normal condition in which discharging is possible. In this case, set the VM pin voltage equal to the GND voltage (short the VM and GND pins or connect a charger) to enter the normal condition.TIMING CHART1.Overcharge and overdischarge detectionV V CU -V V DL +V V DL ONONCHARGEV DDV ov1V SS V VMFigure5-1 Overcharge and Overdischarge Voltage Detection2.Overdischarge current detectionV CU V CU -V HC V DL +V DH V DLONDISCHARGEOFFV DDV V ov2V ov1V SS(1)(4)(1)(1)(1)(4)(4)Figure5-2 Overdischarge Current DetectionRemark: (1) Normal condition (2) Overcharge voltage condition (3) Overdischarge voltage condition (4)Overcurrent condition3.Charger DetectionVV CU-VV DL+VV DLONV DDVMV SSVFigure5-3 Charger Detection4.Abnormal Charger DetectionVV CU-VV DL+VV DLONONCHARGEV DDVMV SSVFigure5-4 Abnormal Charger DetectionRemark: (1) Normal condition (2) Overcharge voltage condition (3) Overdischarge voltage condition (4)Overcurrent conditionTYPICAL CHARACTERISTICS(Test based on XB5352G version, V BAT = 3.6V, T A= 25 C unless otherwise specified)Internal FET On-Resistance vs. Junction TemperatureTYPICAL APPLICATIONAs shown in Figure 6, the bold line is the high density current path which must be kept as short as possible. For thermal management, ensure that these trace widths are adequate. C1 is a decoupling capacitor which should be placed as close as possible to XB5352G.Fig 6 XB5352G in a Typical Battery Protection CircuitPrecautions• Pay attention to the operating conditions for input/output voltage and load current so that the power loss in XB5352G does not exceed the power dissipation of the package.• Do not apply an el ectrostatic discharge to this XB5352G that exceeds the performance ratings of the built-in electrostatic protection circuit.XB5352G______________________________________ ____________________________________________________ ________ _________ ____________ - 11 -PACKAGE OUTLINESOT23-5 PACKAGE OUTLINE AND DIMENSIONS。

KMS9401-18.单芯片移动电源方案,三合一方案,移动电源5v1A 集成ic.

KMS9401-18.单芯片移动电源方案,三合一方案,移动电源5v1A 集成ic.

R3 P0R301
P0R302USNB0-UINSB0PI0NJK1101
P0C4P001C402
1R 1206
P0JK2102
P0JK3103
C4 10UF/0805
P0JK4104 P0JK5105
MICRO
P0R502 P0R501 P0UP1G0N6D P0U1G0N10D
GND GND
GND
2.0
3.0
RISET(KΩ)
充电电流(A) VS RISET(KΩ)
IISET(A)
Shenzhen kemeishun Electronic Co.,Ltd
6
KMS9401
移动电源单芯片解决方案
应用信息
一) 使用4颗LED显示电量
对 移 动 电 源 电 芯 进 行 充 电 工 作 时 , 电 量 在0%~25%时 仅 第 一 颗LED“ 闪 烁 ” 工 作 , 闪 烁 频 率 是 1/1.6s, 其 它 LED显 示 状 态 为 “ 灭 ” ; 电 量 在 25%~ 50%时 第 二 颗 LED“ 闪 烁 ” 工 作 ; 电 量 在 50%~ 7 5 %时 第 三 颗L E D“ 闪 烁 ” 工 作 ; 电 量 在7 5 %~1 0 0 %时 第 四 颗L E D“ 闪 烁 ” 工 作 ; 当 电 量 达 到1 0 0 %后 , 第四颗LED的状态为“常亮”。以上情况其它三颗LED状态见下表。(附表一)
Shenzhen kemeishun Electronic Co.,Ltd
2
原理图应用
KMS9401
移动电源单芯片解决方案
GP0Q10G P0Q10D
P0R202 P0R201 P0R102 P0R101
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概述
本方案是专为移动电源设计的单芯片解决方案,KMS9311B内部集成了充电管理模块、放电管理模块、电量检测、LED指示模块以及温度补偿、过温保护、过充与过放保护、输出过压保护、输出重载保护以及输出短路保护等安全保护,可以完全取代传统的“充电IC+升压IC+MCU”方案。

本方案充电规格为5V/1.0A,放电规格为5V/1.5A,带电量指示、放电状态指示以及手电筒,具有低成本、高性能的竞争优势。

方案特性
◎内置充电、放电功率MOS,无需外加
◎输入电压:4.3V~6V
◎充电电流:1A
◎放电输出电流:1.5A
◎输出电压:5V
◎放电时当电池电压低于 3.2V,LED1以1HZ频率闪烁提示,电压低于 3.0V后关闭IC,待机电流<8UA ◎负载自动检测,负载接入时自动唤醒,当负载电流减小到50MA以下或负载移除后16S,进入待机模式,待机电流<10UA
◎指示灯为4档指示,其他灯数另外订做
◎预设 4.2V充电电压
◎充电时当芯片内部温度大于120℃时,充电电流开始减小,当温度升高到140℃时,充电电流减小到零◎当电池电压低于 2.9V时,以涓流模式充电,涓流充电电流为正常充电电流的1/10,当电池电压充到 4.2V时,进入恒压充电模式,充电电流逐渐减小,当减小到正常充电电流的1/10时,充电过程结束
◎最高达90%的放电效率
◎ESOP16L封装,散热性能良好
应用电路
L1
管脚描述
PCB设计参考
1、IC下面敷铜散热,散热面积尽量大且散热的地方留一些通孔增强散热;
2、AGND和PGND直接打到IC下面的散热敷铜上;
3、BAT电容靠近IC,BAT+和BAT-需先经过BAT电容再到IC,各GND走线要尽量粗,空余的地方全部走GND;
4、电容C4到电感L1再到SW的路径走线要尽量短且线要粗;
5、电感L1,SS34与电容形成的环路走线要短,环面积要小;
6、大电流通路,如BAT、L1到SW,BAT、L1、D1、Q1到输出USB的通路尽量不要过过孔;
原件清单
1、输出D+/D-若不加分压电阻则需要短接,否则对某些品牌手机不能充电(比如苹果);如果加分压电阻,则需保证
OUT与地的总电阻至少为负载检测电阻R7的3倍以上,否则插入负载时有可能自动检测不到负载而需按键开机;
若不需要自动检测负载功能,只需将PMOS管Q1两端电阻R7去掉,而在OUT引脚与GND之间加一20K 的电
阻即可;因为有些品牌手机对D+/D-电压有要求且要求不一样,所以不能全部兼容所有设备。

2、输出电容C2选择质量较好的低ESR的贴片电容,建议使用3个22uF贴片电容,若ESR较大或实际容值较低,须加
大C2;
3、Q1选择导通电阻小的PMOS,输出电流全部由Q1流出,若Q1导通电阻较大会影响效率,而且可能会发热严重而烧毁;
4、电感L1的饱和电流需大于5A,否则因电感饱和可能会导致芯片工作不正常,建议使用屏蔽电感;
5、肖特基二极管D1尽量选择大电流低电压的二极管,建议使用2颗SS34并联,否则会发热严重且影响效率;
6、KMS9311B集成了过充保护、过放保护、充电温度补偿、过温保护、输出过压保护、输出重载保护、输出短路保护等多重保护机制,另外可以在Vin与地之间加一个稳压管ZD以避免Vin输入电源纹波太高;
7、充电时,LED1~LED4根据电量逐级闪烁,充满后全亮,充电时短按按键无效;放电时,LED1~LED4显示电量;待机时短按按键显示电量16S后关闭;长按按键2S,可以打开或关闭手电筒;
8、如果需要增大输出电压,可以加入R8,如应用电路所示;R8每增加10K,输出电压增加0.1V。

9、输出短路瞬间,电流急剧升高,一般方案因采用简单检测方式,短路后需经过一定延迟时间之后再保护,就像打ESD一样,测试时虽然可能不会有问题,但是常常使芯片及电感、二极管受到潜在的损伤而留下隐患,KMS9311B 采用实时的短路保护方式,即在短路瞬间立即响应而没有延时,这样外围元件及芯片得到及时保护而不会面临潜在损伤的风险;另外在测试时如果使用电子负载,因有些电子负载等效电容很大,在接通瞬间所需电流很大,这样KMS9311B会认为发生了短路,从而关闭芯片,若遇到这种情况,请给电子负载串联一个1~2欧姆的功率电阻
限流,或者换用电阻负载进行测试,也可以使用我们提供的电子负载测试转接板进行测试。

工作波形
1、正常工作时OUT(CH1),SW(CH2),电感电流(CH3)波形
2、轻载时OUT(CH1),SW(CH2),电感电流(CH3)波形
3、负载移除后16S内OUT(CH1),SW(CH2),电感电流(CH3)波形
4、负载接入时OUT(CH1),SW(CH2),电感电流(CH3)波形
5、短路瞬间OUT(CH1),SW(CH2),电感电流(CH3)波形封装外形尺寸
ESOP16L。

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