【经验】必易微离线式线性稳压器KP3310实际设计中的5个注意事项
KP3310是必易微一款紧凑型无电感设计的离线式线性稳压器,外围极简,典型电路只需3个器件,本文将分享KP3310在实际设计中的5个注意事项。
图1:KP3310典型应用电路
一、带载能力:
KP3310峰值带载能力为40~50mA。稳态带载能力与温升表现有关,SOP封装建议小于20mA,DIP封装建议小于30mA。
二、VDD电容设计:
VDD电容容值可按公式计算:
建议选取范围在220uF~470uF。容值越小,系统启动速度越快,IC温升越低;容值越大,峰值带载能力越大,受输入电压波动的影响越小。
三、PCB layout:
适当增大Drain端敷铜面积,有助于提高散热效果,降低IC温升。
四、整流后不能放电容:
KP3310需检测到工频包络才能正常工作,故整流后不能放置滤波器件(如电解电容)。
五、老化注意事项:
若使用调压器为多台KP3310样机进行通电老化(如50台以上),输入电压波形可能存在畸变,影响IC的AC检测及MOS开通逻辑,可能导致IC损坏。建议使用变频稳压电源进行老化,或减少同时老化的台数。
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产品型号
|
品类
|
封装
|
拓扑电路
|
最大功率(W)
|
工作模式
|
最高频率(kHz)
|
输出特性
|
启动方式
|
能效标准
|
待机功耗(mW)
|
VDDmax(V)
|
KP212
|
PSR 控制器
|
SOT23-6
|
Buck/Flyback
|
65
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DCM
|
70
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CC&CV
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电阻启动
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六级
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<75
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30
|
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LED照明驱动产品介绍
描述- 本资料介绍了必易微电子的LED照明驱动产品,涵盖光源类、灯具类、调光类和辅电及恒压产品。产品包括新一代全集成方案、高PF非隔离产品、HPF CV BOOST、LPF QR FLYBACK、HPF CC BOOST、HPF 高精度CC BUCK、HPF 高精度CC BUCK等。资料详细介绍了各产品的特点、应用电路和性能参数。
型号- KP18001WPA,KP1079XWPA,KP15062SPA,KP421LGA,KP1271FNSPA,KP116SPA,KP15113SPA,KP1162SPA,KP1511SPA,KP1313X,KP14654DP,KP1271FCSPA,KP1191SPA,KP14653SPA,KP1222SPA,KP3310,KP10772WPA,KP1255,KP107LSPA,KP119SPA,KP1325SPA,KP3310DP,KP1505ASPA,KP1059BWPA,KP15026VPA,KP123X,KP1199BWPA,KP1466SPA,KP106,KP122SPA,KP1273FCSPA,KP13134DP,KP107W,KP119X,KP10790WPA,KP107L,KP15114DP,KP18011,KP1234SPA,KP18011ESPA,KP15026,KP1272FHSPA,KP15111SPA,KP1511,KP1059AWPA,KP107WSPA,KP15051SPA,KP1465SPA,KP10770WPA,KP4500,KP1077XWPA,KP1164MSPA,KP14663CSPA,KP107XL,KP15114SPA,KP1272FCSPA,KP1272FNSPA,KP13135DP,KP14652SPA,KP10792WPA,KP1192DP,KP18108WPA,KP18002FESPA,KP1079AWPA,KP1274FHSPA,KP1255SPA,KP1262FCWPA,KP1511X,KP1313LGA,KP3310SGA,KP1263FCWPA,KP1059CWPA,KP1466X,KP106SPA,KP1501AVPA,KP12353SPA,KP10791WPA,KP116X,KP14652DP,KP4213ESGA,KP1220SPA,KP127XFC,KP1274FNDP,KP421SPA,KP12762FWPA,KP127XFN,KP1192SP,KP1325,KP1501A,KP15052SPA,S4223,KP1193DP,KP126XFCWPA,KP15114HSPA,KP18062ESPA,KP1274FNSPA,KP1272FNDP,KP15062,KP14664MSPA,KP18106WPA,KP15064,KP1276XFWPA,KP1164SPA,KP18061ESPA,KP1274FCSPA,KP14653DP,KP1199AWPA,KP18055ESPA,KP123SPA,KP14651SPA,KP12761FWPA,KP4500SGA,KP1077AWPA,KP14662SPA,KP1805X,KP1261FCWPA,KP1806XWPA,KP14662CSPA,KP1059XWPA,KP1465X,KP1194DP,KP1221SPA,KP12354SPA,KP15064SPA,KP18053ESPA,KP10771WPA
KP3310 离线式、无电感交流输入线性稳压器
描述- 本资料介绍了KP3310离线式无电感交流输入线性稳压器,其具有高精度输出电压、宽输入电压范围、无需功率电感和高压电容等特点,适用于小家电电源和墙壁开关调光器等领域。
型号- KP3310
【产品】紧凑型无电感设计的离线式线性稳压器KP3310,5V/3.3V/2.7V输出电压
必易微电子推出的KP3310是一款紧凑型无电感设计的离线式线性稳压器,通过调整SEL管脚阻值,KP3310有5V/3.3V/2.7V三档输出电压可选,是一种简单可靠的获得偏置供电的离线式电源解决方案。
【应用】国产无电感ACDC KP3310可取代传统阻容降压方案,外围极简、输出稳定
将交流市电转换为低压直流的常规方法是采用变压器降压后再整流滤波,当受体积和成本等因素的限制时,最简单实用的方法就是采用阻容降压式电源。本文对比传统阻容降压与必易微电子KP3310方案做对比,分析用KP3310无电感ACDC方案去取代传统阻容降压方案的优势。
必易微LED芯片选型表
必易微提供以下技术参数LED产品的选型,MOS耐压:40V-600V,导通阻抗:0.25Ω-18Ω,工作模式:临界连续、开关、断续、Linear
产品型号
|
品类
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Package
|
PF
|
MOSFET Rdson
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MOSFET Vds
|
Isolated Non-Iso
|
Topology
|
OTP Internal
|
OVP Internal
|
OVP External
|
OCP
|
mini output voltage
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Iout Vin=176-264Vac 72Vout
|
KP1054AVPA
|
LED芯片
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SOP-4
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0.5
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18Ω
|
500V
|
Y
|
buck
|
Y
|
N
|
N
|
Y
|
15V
|
110mA
|
选型表 - 必易微 立即选型
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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>
可定制平板变压器、主变压器的开关频率2MHz以内、输入电压1400V以内、输出电压1400V以内,50%以上的产品采用自动化生产,最快3天提供样品、7天交货。
最小起订量: 3000 提交需求>
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