先看看现在小功率电源与充电器的基本规范吧!
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/41/1147959169.jpg?x-oss-process=image/watermark,g_center,image_YXJ0aWNsZS9wdWJsaWMvd2F0ZXJtYXJrLnBuZz94LW9zcy1wcm9jZXNzPWltYWdlL3Jlc2l6ZSxQXzQwCg,t_20');}" onmousewheel="return imgzoom(this);">
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/41/1147959182.jpg?x-oss-process=image/watermark,g_center,image_YXJ0aWNsZS9wdWJsaWMvd2F0ZXJtYXJrLnBuZz94LW9zcy1wcm9jZXNzPWltYWdlL3Jlc2l6ZSxQXzQwCg,t_20');}" onmousewheel="return imgzoom(this);">
关于小功率电源,想谈谈成本问题,如何降成本!什么样的架构才是最低成本的可靠电源!
全部回复(422)
正序查看
倒序查看
现在还没有回复呢,说说你的想法
1) Energy Star (US)
Standby power < 0.50W
2) California Energy Commission (CEC)
Standby Power < 0.75W
Average efficiency > 64% for Po=5W
3) Blue Angel
Standby Power < 0.3W
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/41/1147959274.jpg');}" onmousewheel="return imgzoom(this);">
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/41/1147959303.jpg');}" onmousewheel="return imgzoom(this);">
Linear
1) Low cost (< $0.3 PCBA for 5W)
2) Large size & heavy
3) Single line Input
4) Not meeting Green Mode
Switching Mode
1) Higher Cost (> $0.5 PCBA for 5W)
2) Universal line input
3) Meet Energy star, blue angel, CEC
4) EMI
RCC
1) Lowest cost
2) Variable Frequency
3) Inconsistent performance
PWM
1) $0.1 – $0.2 more than RCC
2) Fixed frequency
3) Consistent green mode & EMI
RCC SCH:
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/41/1147959395.jpg');}" onmousewheel="return imgzoom(this);">
1) No PWM IC
($0.1 - $0.2)
2) NPN Switch
($0.025)
PWM SCH:
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/41/1147959478.jpg');}" onmousewheel="return imgzoom(this);">
1) PWM IC + MOSFET
($0.1-0.2 + $0.125)
2) Integrated Switch
Standby power < 0.50W
2) California Energy Commission (CEC)
Standby Power < 0.75W
Average efficiency > 64% for Po=5W
3) Blue Angel
Standby Power < 0.3W
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/41/1147959274.jpg');}" onmousewheel="return imgzoom(this);">
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/41/1147959303.jpg');}" onmousewheel="return imgzoom(this);">
Linear
1) Low cost (< $0.3 PCBA for 5W)
2) Large size & heavy
3) Single line Input
4) Not meeting Green Mode
Switching Mode
1) Higher Cost (> $0.5 PCBA for 5W)
2) Universal line input
3) Meet Energy star, blue angel, CEC
4) EMI
RCC
1) Lowest cost
2) Variable Frequency
3) Inconsistent performance
PWM
1) $0.1 – $0.2 more than RCC
2) Fixed frequency
3) Consistent green mode & EMI
RCC SCH:
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/41/1147959395.jpg');}" onmousewheel="return imgzoom(this);">
1) No PWM IC
($0.1 - $0.2)
2) NPN Switch
($0.025)
PWM SCH:
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/41/1147959478.jpg');}" onmousewheel="return imgzoom(this);">
1) PWM IC + MOSFET
($0.1-0.2 + $0.125)
2) Integrated Switch
0
回复
提示
@marsom
1)EnergyStar(US) Standbypower<0.50W2)CaliforniaEnergyCommission(CEC) StandbyPower<0.75W Averageefficiency>64%forPo=5W3)BlueAngel StandbyPower<0.3W[图片]500){this.resized=true;this.width=500;this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/41/1147959274.jpg');}"onmousewheel="returnimgzoom(this);">[图片]500){this.resized=true;this.width=500;this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/41/1147959303.jpg');}"onmousewheel="returnimgzoom(this);">Linear1)Lowcost(<$0.3PCBAfor5W)2)Largesize&heavy3)SinglelineInput4)NotmeetingGreenModeSwitchingMode1)HigherCost(>$0.5PCBAfor5W)2)Universallineinput3)MeetEnergystar,blueangel,CEC4)EMIRCC 1)Lowestcost 2)VariableFrequency 3)InconsistentperformancePWM 1)$0.1–$0.2morethanRCC 2)Fixedfrequency 3)Consistentgreenmode&EMIRCCSCH:[图片]500){this.resized=true;this.width=500;this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/41/1147959395.jpg');}"onmousewheel="returnimgzoom(this);">1)NoPWMIC ($0.1-$0.2)2)NPNSwitch ($0.025)PWMSCH:[图片]500){this.resized=true;this.width=500;this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/41/1147959478.jpg');}"onmousewheel="returnimgzoom(this);">1)PWMIC+MOSFET ($0.1-0.2+$0.125)2)IntegratedSwitch
High Voltage Switch
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/41/1147959586.jpg');}" onmousewheel="return imgzoom(this);">
1) Cost
($0.125 vs 0.025)
2) Efficiency
3) EMI
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/41/1147959586.jpg');}" onmousewheel="return imgzoom(this);">
1) Cost
($0.125 vs 0.025)
2) Efficiency
3) EMI
0
回复
提示
@marsom
HighVoltageSwitch[图片]500){this.resized=true;this.width=500;this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/41/1147959586.jpg');}"onmousewheel="returnimgzoom(this);">1)Cost ($0.125vs0.025)2)Efficiency3)EMI
Emitter Switching Topology
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/41/1147959867.jpg');}" onmousewheel="return imgzoom(this);">
Base Switching
1) Slow turn-off
2) VCEO blocking rating
(450V for MJE13003)
Emitter Switching
1) Fast turn-off
2) VCBO blocking rating
(700V for MJE13003)
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/41/1147959867.jpg');}" onmousewheel="return imgzoom(this);">
Base Switching
1) Slow turn-off
2) VCEO blocking rating
(450V for MJE13003)
Emitter Switching
1) Fast turn-off
2) VCBO blocking rating
(700V for MJE13003)
0
回复
提示
@marsom
EmitterSwitchingTopology[图片]500){this.resized=true;this.width=500;this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/41/1147959867.jpg');}"onmousewheel="returnimgzoom(this);">BaseSwitching1)Slowturn-off 2)VCEOblockingrating (450VforMJE13003)EmitterSwitching1)Fastturn-off2)VCBOblockingrating (700VforMJE13003)
EST Advantages
1) Fast turn-off time
2) VCBO blocking voltage rating
3) Low High Frequency EMI No Y-cap
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/41/1147960192.jpg');}" onmousewheel="return imgzoom(this);">
1) Fast turn-off time
2) VCBO blocking voltage rating
3) Low High Frequency EMI No Y-cap
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/41/1147960192.jpg');}" onmousewheel="return imgzoom(this);">
0
回复
提示
@marsom
ESTAdvantages1)Fastturn-offtime2)VCBOblockingvoltagerating3)LowHighFrequencyEMINoY-cap[图片]500){this.resized=true;this.width=500;this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/41/1147960192.jpg');}"onmousewheel="returnimgzoom(this);">
从以上看出!小功率使用三极做开关管,比起使用MOSFET成本上可以降下20%至40%的成本!性能上比起RCC相对要稳定,可靠性强!
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/41/1147960928.jpg');}" onmousewheel="return imgzoom(this);">
500) {this.resized=true; this.width=500; this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/41/1147960928.jpg');}" onmousewheel="return imgzoom(this);">
0
回复
提示
@marsom
从以上看出!小功率使用三极做开关管,比起使用MOSFET成本上可以降下20%至40%的成本!性能上比起RCC相对要稳定,可靠性强![图片]500){this.resized=true;this.width=500;this.alt='这是一张缩略图,点击可放大。\n按住CTRL,滚动鼠标滚轮可自由缩放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/41/1147960928.jpg');}"onmousewheel="returnimgzoom(this);">
欢迎大家针对此方案进行探讨!
0
回复
提示