【选型】国产同步升压DCDC转换器助力智能门锁电源设计,效率达93%,静态工作电流1μA
智能门锁属于智能家居的一种,可以带来更便利的生活体验,采用3.6V锂电池供电,内部电机、摄像头模组需要5V供电,通用解决方案是采用DCDC升压芯片,要求具有高效率、低功耗、小尺寸封装的特性。
针对智能门锁的电源设计,推荐微源半导体的升压DCDC转换器LP6261AB6F,输入电压1-5.0V,输出电压5.1V,最大开关电流1A,开关频率1200kHz,集成MOSFET,以下是LP6261AB6F典型电气参数。
1、智能门锁采用锂电池供电,输入电压3.6V左右,内部电机驱动和摄像头模组等部件需要5.0V的电源供电,LP6261AB6F升压DCDC转换器可以提供1.0-5.0V范围内输入电压,输出固定5.0V电压,最大开关电流小于1A,满足智能门锁内部电源设计需求。
2、为降低智能门锁电池充电频率,要求内部电源器件具有低功耗、高效率的特性,LP6261AB6F工作效率最高达到93%,静态电流小于1μA,可以提高电池使用寿命。
3、智能门锁的发展趋势是多功能集成,内部空间有限,LP6261AB6F封装是SOT-23-6,内部集成低导通电阻的MOSFET,应用电路简单,只需要少量匹配元件即可正常使用,节省PCB占用面积和降低BOM成本,以下是LP6261AB6F典型应用电路。
图1 LP6261AB6F应用电路
综上所述,微源半导体的同步升压DCDC转换器LP6261AB6F具有低功耗、高达93%转换效率、小尺寸封装的特性,是智能门锁等电池供电的智能家居产品电源设计的优秀解决方案。
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【方案】热电堆式人体红外探测器优选元器件方案
描述- 本方案通过采用Melexis 公司的热电堆式红外温度传感器MLX90615、Silicon Labs 高性能低功耗8位MCU EFM8BB10F8G 和圣邦微电子低功耗高效率升压电源转换芯片SGM6603 及相关器件,解决了传感器不能测量人体温度、不能检测静止人体的问题,大大提高了整个智能系统的可靠性和智能家居、智能酒店的住宿舒适度。
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在手摇式供电NB模块的方案中,由于每次手摇产生的电流很小,需要低功耗的电源IC配合使用以达到短暂使用的目的,微源半导体的LP6261AB6F静态电流1μA,电源电压范围1V-5V,应用于1-5V的boost电路中可以达到低功耗的要求。
微源半导体(LPSemi)电源芯片/音频功放/MOS管/协议芯片选型指南
型号- LP5300C,LP7854A,LP5300F,LPB1001,LP6281,LPB1002,LP6282,LP6283,LP6284,LP7800HA,LP6285,LP7800HB,LP6286,LPM9030A,LP28400A,LP28303A,LP5301A,LP6452AF,LP6270,LP3352T,LPB1009,LP6304B,LP6452AT,LPB1006,LPB1003,LP7864H,LP5300A,LP7852A,LP78073A,LPA4722,LP4069HT,LPM9040A,LP6299,LPB2105,LPB2106,LPA4732,LP6291,LP6294,LP6295,LP6296,LP6298,LP6288,LP6289,LP28058,LP6453AT,LPM8205,LP28055,LP28056,LP3803,LP78070F,LP78070S,LP3809,LP3808,LP6215A,LPM9435,LP3818C,LPA4809,LP6226A,LP64920F,LP28021,LP3811,LP3810,LP6212A,LP28013,LP28014,LP28011,LP4068T,LP6453F,LP6453A,LPA2010,LP4068H,LP4056H,LPM9926,LP6453T,LP4069T,LP6452F,LP6452A,LP4021A,LP4069H,LPB1010H,LP4069P,LP4069PT,LP28013S,LP3989,LP3988,LP6451F,LP3986,LP3985,LP28013H,LP3984,LP3981,LP3980,LP6221A,LP28014A,LP4030HA,LPA2153,LP4030HB,LPA2154,LP28014H,LP4054H,LP4030HC,LP4030HD,LP7806K2,LP4067T,LP28014S,LP6462H,LP7806K4,LP6450F,LP6498H,LP6220A,LP6498A,LP4068A,LP6498B,LP4055A,LPA2163,LPA2164,LPA2165,LPA2010S,LP28015A,LPA2160,LPA2161,LP28019S,LPA4990,LPA4871,LP4076E,LP4076H,LP105,LP6230B,LP3996,LP3995,LP3994,LP6230C,LP3993,LP3992,LP3991,LP28300C,LP28300B,LP28300A,LPA2100,LPA2101,LPA2102,LPA2103,LP7855XA,LP28009A,LP102,LP3307,LP6253H,LP3302,LP3301,LPA2108,LPA4891,LPA4890,LPA2110,LP4062A,LP3988H,LP6495*,LP2206,LP4063S,LP1115,LP4051T,LP2203,LP1113,LP2202,LP2201,LP1111,LP1110,LP6470T,LP28019B,LP3209,LP6493F,LP3204,LP4060S,LP3202,LP3201,LP3321,LP3320,LP7855SH,LP28601,LP4060A,LP7801,LP102A,LP4072H,LP3318,LP6492F,LP3317,LP3986H,LP3316,LP3315,LPA2101A,LP3310,LP28057A,LP28021A,LP6453TF,LP28021D,LP64933,LP3987H,LP4073H,LPM3413,LPM3414,LP6261H,LP3983H,LP5280S,LP3983S,LP6297B,LP6452ATF,LP3102,LP3101,LP3100,LP103S,LP6297A,LP3220,LP103Q,LP3350,LP6261S,LP4070E,LP78080,LP6490F,LP3219,LP3218,LPM3407A,LP3211,LP7811,LP6260S,LP7810,LP7813,LP7815,LP62610,LP78070,LP78071,LPS100,LP6260M,LP4080H,LP3981H,LP3368,LP28011H,LP3366,LP3120,LPW5210,LPW5211,LPA2173,LPA2174,LPW5213,LP5300,LPA2175,LP5301,LPA2176,LP5302,LP5303,LP3981S,LP5304,LP5305,LP5306,LP5308,LP5309,LPA2171,LPA2172,LP3982S,LP28014SE,LP3354,LP3353,LP3352,LP3110,LPW5220,LP3351,LP28013A,LP7804T,LP4081H,LP7801TE,LP28021S,LPA2110A,LP28021H,LP7855MF,LP3384,LP28021HD,LP7862,LP7861,LP7864,LP7863,LP28058F,LP7866,LP3390,LP7865,LP7867,LP1115B,LP1115A,LP3980H,SUPER22,LP6280A,LP7860,LP3383,LP7850,LP3382,LPW5201,LP7853,LP6400,LP7802T,LP7852,LP3380,LPW5203,LP7855,LP7855MH,LP6402,LPW5204,LP6403,LP6280S,LPW5206,LP7856,LP3980S,LPW5207,LP7859,LP3993B,LPW5208,LP7858,LPW5209,LP5308M,LP4020,LP7801T,LP6310,LP6312,LPM9007,LP7801L,LP6291H,LP7801D,LP3990A,LPA4722A,LP7800S,LP6301,LP6401F34,LP6302,LP6303,LP7812B,LP7812C,LP7812A,LPM9030,LPM9031,LP4040,LP6460,LP6461,LP6342,LP6453,LPM9026,LP6212,LP6454,LPM9022,LP6216,LPM9024,LP6218,LP1111A,LP7859A,LPM9021,LP3201S,LP4030,LP6450,LP5240,LP6451,LP5241,LP6452,LPM9015,LP6201,LPM9017,LPA8003S,LP7810A,LPW5202XX,LP53050,LP4060,LP6480,LP4061,LP6240,LP6482,LP4063,LP6483,LP4065,LPA2104A,LPM9050,LP4055,LP4057,LP6235,LP6236,LP4059,LP6238,LP6239,LP7857M,LP5305A,LPA2104S,LPM4953,LP7857H,LP5305F,LPM9040,LP5380,LPM9042,LP6470,LP4051,LP28052H,LP6471,LP4052,LP4053,LPM3401A,LP6222,LP6223,LP6224,LP6225,LP28053A,LP6226,LPM9033,LP6229,LP5304A,LP5304C,LP7820A,LPM3406,LPM3407,LP4081,LP4082,LP6260,LP6261,LP4077,LP7855S,LP6255,LP6497,LP4078,LP6256,LP3220S,LP6257,LP6401F24,LP7855M,LPM9029C,LPM3400,LPM3401,LP5303A,LP3100A,LP5301F,LP4070,LP6490,LP5280,LP6491,LP4072,LP6492,LP4073,LP6493,LP4074,LP6252,LP6494,LP4075,LP4076,LP6496,LP4066,LP4067,LP7854S,LP4068,LP4069,LP7854H,LPM2301,LP7800K4,LP5314A,LPM2302,LP7800K2,LP3367A
微源半导体升压DC-DC BOOST芯片选型表
提供同步升压DC-DC BUCK芯片和异步升压DC-DC BUCK芯片,静态功耗电流低至1uA,宽电压输入
产品型号
|
品类
|
5V带载电流(A)
|
开关电流(A)
|
限流可调
|
输入电压(V)
|
输出电压(V)
|
最高输出电压(V)
|
FB电压(V)
|
工作频率(MHz/KHz)
|
效率(%)
|
封装
|
LP6252
|
同步 Boost
|
1.2A
|
2.5A
|
—
|
2.2V~6V
|
Adj
|
5.5V
|
0.8V
|
1MHz
|
94%
|
SOT23-6/DFN-6(2*2)
|
选型表 - 微源半导体 立即选型
电子商城
品牌:长晶科技
品类:PFM/PWM Synchronous Boost Converter
价格:¥0.5250
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可定制均温板VC最薄0.4mm,有效导热系数超5,000 W / m·K(纯铜(401 W/m·K ,石墨烯1,200 W/m·K)。工作温度范围同时满足低于-250℃和高于2000℃的应用,定制最低要求,项目年采购额大于10万人民币,或采购台套数大于2000套。
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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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