涓婚锛氭苯杞︾數瀛愬簲鐢ㄨВ鍐虫柟妗� |
鍦ㄧ嚎闂瓟锛� |
[闂細ivanjin] |
浣犲ソ锛岃闂兘鍚︽帹鑽愰€傜敤宸ョ▼杞﹁締鐨勭數婧怚C锛屼緥濡侱C/DC.
瀵逛簬鐢垫簮鐨勫姛鐜囧拰鐢靛帇鐗圭偣锛岃缁欎簣涓€浜涢€夋嫨鐨勭煡閬撱€傝阿璋紒 |
[绛旓細Terry] |
We have too many choices. In the presentation, you may already see some,
but due to limited time, we can"t go through every parts we have. So,
depending on your application requirement, we can have more involved discussion
to locate a good part for you. You can contact us (tlo@linear.com) directly
for details. |
[2005-11-16 10:48:04] |
[闂細32kmcu] |
LT1937鏃犵數娴佽緭鍑虹殑妫€娴嬩繚鎶�,鍦ㄧ數璺嚭鐜伴棶棰樼殑鏃跺€�,杈撳嚭鐢靛帇灏嗕竴鐩村崌涓婂幓,鐩村埌鎹熷潖鑺墖鑷韩.璇烽棶LINER鏈夊叧浜庤繖涓棶棰樼殑瑙e喅鏂规鍚�? |
[绛旓細Dongyan] |
We have parts with open LED protection, such as LT3465 and LT3465A. |
[2005-11-16 10:52:59] |
[闂細winhi] |
LTC6101鐨凥妗ョ數娴佹娴嬬敤涓ゅ彧妫€娴嬫湁浠€涔堜紭鐐�,鐢ㄤ竴鍙湪鍥炲湴绔娴嬩笉鍙互鍚� |
[绛旓細Glen] |
Using two LTC6101s allows us to sense what is the direction of the current
in the motor. Using one LTC6101, the current sense is always
positive, so we would need to know what switch is on.
Also, sometimes putting sense resistors in the ground path is not desirable. But
yes, in the ground path, you could use one or two sense circuits. Using
two gives you polarity information. |
[2005-11-16 10:58:24] |
[闂細ptldy] |
璇烽棶鏈夋棤杈撳叆4V-80V锛岃緭鍑�5V/3A鐨勭畝鍗曡姱鐗囨柟妗堬紵 |
[绛旓細Dongyan] |
What is your input source? We have LT3800 that can work from
4V to 60V. |
[2005-11-16 11:00:01] |
[闂細yjs1112] |
璇疯鏄庢湁鍏砈EPIC鎷撴墤缁撴瀯鐨勬儏鍐�,澶氳阿! |
[绛旓細Terry] |
SEPIC topology is based on Boost converter and use 2 inductor (can be
coupled) and capacitor for the power conversion. This topology has some
drawbacks as the MOSFET then see high voltage and current stress (Vds
can see Vin+Vout, Isw is the sum of the input and output current). The
inductors and capacitor will also contribute to the loss. So, high efficiency
is not easily achieved. |
[2005-11-16 11:00:41] |
[闂細shandong] |
浣犱滑鐨勮姱鐗�,鏈€澶ц娴嬬數娴�,鏈夊澶�? |
[绛旓細Glen] |
There is no current limit. It depends on the sense resistor,
and the maximum input voltage of the sense amplifier. For the
LTC6101, I think the maximum is 4V, so a 1 Ohm resistor would allow you
to sense up to 4A. A 0.001 Ohm resistor would allow you to
sense up to 4000A |
[2005-11-16 11:02:01] |
[闂細32kmcu] |
璇烽棶鏈夌被浼糒T3450閭f牱椹卞姩LED鐨勮姱鐗�,杈撳嚭鏄�5V,-12V,+15鐨勫崟鐗囪В鍐虫柟妗堝悧? |
[绛旓細Terry] |
Our LTC3450 is quite unique and it is mainly for multiples of 5V (5V,
10V, 15V, -15V, -10V, -15 etc).
For your application, you can try our LT3463 or LT3471 (with some simple
diode-cap charge pump) depending on the current requirement. |
[2005-11-16 11:05:07] |
[闂細yjs1112] |
璇疯鏄嶭TC3703鏋舵瀯鐨勪富瑕佺壒鐐�,澶氳阿! |
[绛旓細Dongyan] |
LTC3703 is a synchronous step-down Dc-Dc converter. |
[2005-11-16 11:05:50] |
[闂細qian.song] |
鏄惁鍦ㄨ緭鍏ュ鑼冨洿娉㈠姩鎯呭喌涓嬶紝杈撳叆绋冲畾鍦ㄤ竴涓浐瀹氬€硷紵锛� |
[绛旓細Terry] |
I think this question is asking about the buck-boost converter that
we discussed in the presentation. Yes, we can provide stable output even
though the input is very wide range. For input variation, it is a matter
of line regulation, we have very good line regulation for many of our
controller parts |
[2005-11-16 11:06:34] |
[闂細zclong008] |
璇烽棶鍑岀壒鍏徃鐨勭數婧愬崐瀵间綋IC 鍦ㄦ苯杞︾數瀛愭柟闈㈢浉瀵逛簬NS 锛孴I 绛塈C锛� 鏈変粈涔堜紭鍔匡紵 |
[绛旓細Terry] |
We provides very high performance analog products and it is hard to
generally provide a simple comparison for our advantage. If you have some
specific requirement, I can give you something then and you"ll obviously
see our advantage. |
[2005-11-16 11:10:04] |
[闂細yjs1112] |
璇疯В璇撮珮鎬ц兘闄嶅帇鍨嬫帶鍒跺櫒-LTC3703鐨勭壒寰�,澶氳阿! |
[绛旓細Dongyan] |
It can work up to 100V input voltage. It has 100kHz to 600kHz programmable
freq. It has dual N-channel MOSFET synchronous drive. Please
refer to datasheet for more details. Our website is www.linear.com |
[2005-11-16 11:10:09] |
[闂細dengxc] |
璇烽棶涓撳锛氱洰鍓嶏紝鍦ㄦ苯杞︾數瀛愰鍩熶腑浠ョ粡鑰冭檻鐨勬病鏈夊緱鍒拌В鍐崇殑闂鏈夊摢浜涳紵 |
[绛旓細Terry] |
There are so many different problems indeed. We"ve just covered some
in our presentation. |
[2005-11-16 11:13:46] |
[闂細lhpwell] |
瀵规苯杞﹂煶鍝嶄笂鐨勭數婧愭瘮濡俆FT鏄剧ず涓婄殑鍙樺帇鍣ㄧ敤閫斾笉涓€鏍峰惂锛熷湪鎴戜滑鐨勬苯杞﹂煶鍝嶄笂浣跨敤鏄€庢牱鐨勶紵 |
[绛旓細Terry] |
I don"t think there is too much difference. Some difference, if there
is, maybe on the input voltage range or product operation temperature
range. Some maybe form factor (size). |
[2005-11-16 11:15:50] |
[闂細Sy_Bngd] |
浠€涔堟槸璐熻浇绐侀檷? |
[绛旓細Terry] |
璐熻浇绐侀檷鎸囩殑鏄湪浜ゆ祦鍙戠數鏈虹粰鐢垫睜鍏呯數鏃剁數姹犵數缂嗘柇鎺ョ殑鎯呭舰銆傝繖绉嶇獊鐒舵柇鎺ュ彲鑳戒骇鐢熼珮杈�60V鐨勭灛鎬佺數鍘嬪皷宄帮紝鍥犱负浜ゆ祦鍙戠數鏈鸿瘯鍥剧粰鐢垫睜瀹屽叏鍏呯數銆備氦娴佸彂鐢垫満涓婄殑鐬€佺數鍘嬫姂鍒跺櫒閫氬父鎶婃€荤嚎鐢靛帇绠濅綅浜�36V鍜�60V涔嬮棿锛屽洜鑰屼娇寰椾氦娴佸彂鐢垫満鐨勪笅娓稿櫒浠朵富绔疍C/DC杞崲鍣ㄨ兘澶熸壙鍙�60V鐨勭灛鎬佸皷宄般€傜敱浜庡笇鏈涜繖浜涜浆鎹㈠櫒浠ュ強鐢辫繖浜涜浆鎹㈠櫒渚涚數鐨勫瓙绯荤粺鍦ㄧ灛鎬佷簨浠跺彂鐢熸湡闂村拰鍙戠敓浠ュ悗姝e父宸ヤ綔锛屾墍浠C/DC杞崲鍣ㄨ兘澶熷鐞嗚繖绉嶉珮鐬€佺數鍘嬫槸鑷冲叧閲嶈鐨勩€� |
[2005-11-16 11:16:07] |
[闂細yjs1112] |
璇疯鏄庨潰鍚戞苯杞﹀簲鐢ㄧ殑LED椹卞姩鍣ㄧ姸鍐�,澶氳阿! |
[绛旓細Dongyan] |
More and more LEDs will be used in car: such as auto dashboard, LCD
panel backlight, interior light, brake light. Our company has
a large variety of parts that are aiming at driving high power LED: LT3474,
LT3477, LT3479, LT3486... |
[2005-11-16 11:17:30] |
[闂細dragontan] |
鍦ㄦ苯杞︾數瀛愪腑浣跨敤鐨勭數婧愭ā鍧楋紝浣犱滑閮藉仛浜嗗摢浜涙敼杩涳紵鍦ㄨ浆鎹㈡晥鐜囷紝绾规尝鐜囨柟闈紝鏁g儹鏂归潰锛屼綘浠彲浠ュ仛鍒颁粈涔堢▼搴︼紵璋㈣阿 |
[绛旓細Terry] |
We"ve done a lot. We are always trying to provide the best efficiency,
lowest noise and small solution to the market. Some techniques we are
using is very confidential but I don"t think customer needs to care so
much. Just try our part and you"ll see how good it is! |
[2005-11-16 11:18:18] |
[闂細yjs1112] |
璇疯鏄庨櫟鐗瑰叕鍙哥殑楂樻晥鐜囪В鍐虫柟妗�,澶氳阿! |
[绛旓細Terry] |
We have too many. So, it is hard to give a very general explanation.
Do you have anything specific? |
[2005-11-16 11:20:29] |
[闂細qbw] |
LTC6101鑳藉惁绋嬫帶杈撳嚭姝c€佽礋400MS鐨�3A/24V鐢垫祦锛� |
[绛旓細Glen] |
No. The LTC6101 can only sense current in one direction. You
can use two of them to sense current in both directions. Or,
you can use a two-direction sense amplifier like the LT1787.
The 400ms is not a problem. Both LTC6101 and LT1787 are fast
enough. |
[2005-11-16 11:22:03] |
[闂細wfm] |
璇烽棶LTC3701鎻愪緵3.3浼忓拰1浼忕殑鐢垫祦鍙互鏈€澶у灏戯紵 |
[绛旓細Terry] |
LTC3701 is an old part. The newer part that may perform even better
is LTC3737. Anyway, the answer to your question is - depending on the
external component choice.
We"ve built application to can support up to 4A. |
[2005-11-16 11:22:14] |
[闂細zclong008] |
璇锋瘮杈冧竴涓婰ED 绐滆仈椹卞姩鍜屽苟鑱旈┍鍔ㄧ殑浼樼己鐐癸紒璋㈣阿 |
[绛旓細Dongyan] |
If you put the LEDs in series, you don"t need to worry about balancing
the LED current, the circuit is simpler. However, the number
of LEDs will be limited by the rating of the switch pin voltage.
If you put the LEDs in parallel, you can drive more LEDs, however, you
need to ballast the currents. We have parts like LT3486, LT3466,
LT1942, which can drive multiple strings. |
[2005-11-16 11:24:03] |
[闂細ptldy] |
鑺墖鐨勮緭鍏ヤ笂闄愭槸60V锛屽叿浣撳浣曞湪杈撳叆绔姞鍣ㄤ欢鎶戝埗60V浠ヤ笂鐨勫共鎵拌剦鍐诧紵 |
[绛旓細Terry] |
Frankly, we can"t! You need to use some other voltage suppression device.
TVS is one commonly used.
The reason why we have 60V is to leave more rooms for the protection device.
In fact, you won"t have continuous 60V but spike or noise can go all the
way up. Therefore energy absorbing device like TVS should be used to clamp
the voltage. However, when you take a closer look on the specification
TVS, the clamping range of those devices are quite wide. You can easily
see a 24V device that have maximum clamping voltage of 58V if maximum
current is pumpped to the device (energy indeed). So, a higher input range
for the power supply can increase the reliability. |
[2005-11-16 11:25:58] |
[闂細maomaocong] |
鍙惁閲囩敤鐬€佺數鍘嬫姂鍒跺櫒鏉ュ簲浠樿礋杞界獊闄�? |
[绛旓細Terry] |
鍦ㄥ閮ㄥ姞璁剧灛鎬佺數鍘嬫姂鍒跺櫒瀹炴柦鐢佃矾淇濇姢鏄竴涓彲琛屾柟娉曪紝浣嗘槸杩欎簺鐢佃矾澧炲姞浜嗘垚鏈苟闇€瑕佸崰鐢ㄥ疂璐电殑鐢佃矾鏉跨┖闂淬€傚噷鐗圭殑楂樺帇寮€鍏崇ǔ鍘嬪櫒鑳芥壙鍙楅珮杈�60V鐨勭灛鎬佺數鍘嬶紝鍚屾椂鍦ㄤ笉瀵圭郴缁熸€ц兘鎴栧彲闈犳€ч€犳垚褰卞搷鐨勫墠鎻愪笅缁存寔杈撳嚭绋冲畾銆備竴鑸儏鍐典笅锛岃繖浜涚ǔ鍘嬪櫒閮芥槸闄嶅帇鍨嬫垨闄嶅帇-鍗囧帇鍨嬭浆鎹㈠櫒锛屽彲缁忓彈鐢卞厖鐢�/鐢垫睜绯荤粺涓柇寮曡捣鐨勬苯杞︾數姹犲拰浜ゆ祦鍙戠數鏈虹殑鐢靛帇缃崲銆� |
[2005-11-16 11:26:02] |
[闂細kevinlee] |
鏈夋病鏈夎疆鑳庡帇鍔涘拰娓╁害妫€娴嬫柟闈㈢殑锛� |
[绛旓細Terry] |
It all depends. What specific standard and what sensor do you have?
We may have some application circuits that can help. |
[2005-11-16 11:27:06] |
[闂細mahatma] |
Linear 瀵圭幇鍦ㄦ柊鍨嬬櫧鍏塋ED椹卞姩鏈夋病鏈夋洿濂�/鎴栬€呰鏄晥鐜囨洿楂樻洿绠€娲佺殑瑙e喅鏂规? |
[绛旓細Terry] |
Yes, we have and indeed too many. So, what power do you need, how many
LEDs will you use? What color are they? |
[2005-11-16 11:27:53] |
[闂細32kmcu] |
璇烽棶鐢宠鏍风墖鐨勬渶灏忎氦璐у懆鏈熸槸澶氶暱鏃堕棿? |
[绛旓細Terry] |
We have a sample site www.linear.com.cn in China and we usually can
deliver samples in 2 days if stock is available. |
[2005-11-16 11:28:47] |
[闂細MSS_SZ] |
璇烽棶LINEAR鍏徃鍦�2006骞磋繕浼氭帹鍑哄摢浜涙柊鐨勬苯杞︾數瀛愬櫒浠讹紵 |
[绛旓細Terry] |
We have around 200 new parts a year. It is hard to tell what parts we
are going to launch. What kind of product are you interested in? |
[2005-11-16 11:29:28] |
[闂細dragontan] |
璇烽棶浣犱滑鑺墖鍙惁鐢∣rCAD浠跨湡锛岃闂姱鐗囪祫鏂欏湪鍝噷鍙互涓嬭浇锛岃阿璋� |
[绛旓細Terry] |
We don"t provide OrCAD simulation. However, our SwitcherCAD is a SPICE
base simultation tool that may be useful for you in designing with our
product. |
[2005-11-16 11:30:07] |
[闂細yjems] |
璇烽棶婕旂ず涓粙缁嶇殑浜у搧鏄惁宸茬粡閲忎骇锛熷摢浜涜姹借溅浼佷笟鎴栬€呴厤濂椾紒涓氬疄闄呴噰鐢ㄨ繃锛� |
[绛旓細Terry] |
The products are all released and in mass production. I"m sorry that
I can"t tell you who my customers are. |
[2005-11-16 11:31:01] |
[闂細gary868] |
鑳借瑾櫧鍏塋ED椹呭嫊鍣ㄧ殑鏈€浣抽厤缃棊? |
[绛旓細Terry] |
I don"t quite understand the question. Can you be more specific? |
[2005-11-16 11:31:39] |
[闂細yjs1112] |
璇疯В璇寸洰鍓嶅湪鐢靛瓙姹借溅棰嗗煙鐢垫簮璁捐闈复鐨勬寫鎴樺浣�,澶氳阿! |
[绛旓細Terry] |
There are so many challenges, we have covered some of them in the presentation. |
[2005-11-16 11:32:06] |
[闂細32kmcu] |
LT3736鐨凷GNG瑕佸鐐硅繛鎺ュ悗涓€鐐规帴鍏GND,涓轰簡閬垮厤灏嗚皭娉㈠甫鍏GND,閭d箞鍙惁灏哠GND澶氱偣杩炴帴鍚庣粡涓€閾佹哀浣撶數鎰熸帴鍏GND?杩欐牱鍋氭湁濂藉鍚�?濡傛灉鏈夊澶�,涓昏浣撶幇鍦ㄤ粈涔堝湴鏂�? |
[绛旓細Dongyan] |
The important thing is to keep the small signal stuff seperate from
the power planes with a local SGND trace or plane. You don"t
need to use an inductor. |
[2005-11-16 11:32:30] |
[闂細qbw] |
鍦↙ED渚涚數鏃朵负鎻愰珮鏁堢巼锛屽浣曡繘琛岄檺娴侊紵 |
[绛旓細Terry] |
There are many methods to do the current control, depending on the topology
and the way you connect the LEDs. How many LEDs do you want to connect?
How do you connect the LEDs? How much power are the LEDs? What is the
input source and voltage range? |
[2005-11-16 11:33:25] |
[闂細td_wang] |
涓€涓紑鍏崇ǔ鍘嬪櫒鐢ㄤ簬姹借溅瀵艰埅绯荤粺鏃讹紝闇€瑕佸叿鏈夐偅浜涚壒鐐�? |
[绛旓細Terry] |
閫氬父寮€鍏崇ǔ鍘嬪櫒鍦ㄦ苯杞﹀鑸郴缁熷簲鐢ㄤ笂闇€瑕佸叿鏈�(1)瀹借緭鍏ュ伐浣滆寖鍥达紝(2)鍦ㄥ璐熻浇鑼冨洿鍐呯殑楂樻晥鐜囷紝(3)鍦ㄦ甯稿伐浣溿€佸鐢ㄥ拰鍋滄満鏃跺叿鏈変綆闈欐€佺數娴侊紝(4)浣庣儹闃伙紝(5)浣庡櫔澹板拰浣嶦MI杈愬皠锛�(6)璐熻浇绐侀檷鎶楁瘉鎬с€� |
[2005-11-16 11:34:39] |
[闂細yjs1112] |
璇疯鏄庢柊娆剧殑楂樼數鍘嬮檷鍘嬪瀷绋冲帇鍣ㄧ殑浼樼偣,澶氳阿! |
[绛旓細Terry] |
High efficiency, robust, small form factor, simple circuit. Just provide
good and stable voltage that you want. |
[2005-11-16 11:35:41] |
[闂細tjwdb] |
鍗佸勾鍓嶆浘鍦ㄦ苯杞︿笂浣跨敤LM7805锛岀粨鏋滆鐬棿楂樺帇鎵撳潖锛屽悗鏉ュ姞涓婅繃鍘嬩繚鎶ゅ緱浠ヨВ鍐筹紝鎯崇煡閬撹繖鏍风殑闂浣犱滑浣跨敤浠€楹藉櫒浠惰В鍐炽€傚垰鎵嶇殑婕旇涓彁鍒版湁涓€娆句骇鍝佸彲浠ユ姂鍒跺鑼冨洿鐢靛帇娉㈠姩锛屾垜鐨勭悊瑙f槸涓嶆槸鍙互鐪佹帀杩囧帇淇濇姢鍣ㄤ欢锛屽TVS锛岃阿璋紒 |
[绛旓細Terry] |
No, TVS is still needed. I think I"ve provide some insight in my answer
to another question here. So, in general, the TVS has very wide range
of clamping voltage. So, a higher input range power supply can help to
ease the TVS selection and provide higher reliability. |
[2005-11-16 11:37:02] |
[闂細32kmcu] |
濡傛灉鎴戜娇鐢↙TC1669鐨凞A杈撳嚭鏉ユ帶鍒禠TC3736鐨刅FB2鑴�,閭d箞瀵逛簬姝よ矾杈撳嚭鐢靛帇鏄惁鍙互杈惧埌鍏虫柇鐨勬晥鏋�? |
[绛旓細Dongyan] |
Can you use pin 14 or pin 17 to turn off the output? |
[2005-11-16 11:37:55] |
[闂細fcl-cq] |
璇烽棶鍦ㄩ噸搴嗗競鍖虹殑閿€鍞湴鐐瑰拰浠g悊鍏徃鍚嶇О |
[绛旓細Terry] |
We have Arrow, Avent-Memec and Cytech in Chengdu. |
[2005-11-16 11:37:59] |
[闂細qiyu] |
LTC3780鍙互鍐欑▼搴忓悧锛� |
[绛旓細Terry] |
No, this is totally a hardware power supply. No software needed. |
[2005-11-16 11:40:40] |
[闂細hzj515] |
鍙惁鎻愪緵LT3479鐩稿叧璧勬枡鍜屾牱鍝� |
[绛旓細Terry] |
Yes, can you provide us your email address? You can also download our
datasheet at www.linear.com |
[2005-11-16 11:41:12] |
[闂細johnren] |
璇烽棶DC-DC鐨凚OOST妯″潡涓紝L鍜孋鐨勯€夋嫨搴旀敞鎰忓摢浜涢棶棰橈紝鍦ㄥ悗绾х殑閫€钘曚腑涓烘彁楂楶SRR搴斾富瑕佹姂鍒跺紑鍏崇殑鍩洪鍚楋紵 |
[绛旓細Dongyan] |
In boost converter, there are difference criteria about selecting L. The
most basic one will be having the inductor ripple current at about 30%
to 40% of the DC input current. The output capacitor will be
selected basic on the output ripple requirement, load transient response
requiremnet and loop stability. |
[2005-11-16 11:41:12] |
[闂細robin] |
鍙惁閲囩敤鐬€佺數鍘嬫姂鍒跺櫒鏉ュ簲浠樿礋杞界獊闄�? |
[绛旓細Terry] |
鍦ㄥ閮ㄥ姞璁剧灛鎬佺數鍘嬫姂鍒跺櫒瀹炴柦鐢佃矾淇濇姢鏄竴涓彲琛屾柟娉曪紝浣嗘槸杩欎簺鐢佃矾澧炲姞浜嗘垚鏈苟闇€瑕佸崰鐢ㄥ疂璐电殑鐢佃矾鏉跨┖闂淬€傚噷鐗圭殑楂樺帇寮€鍏崇ǔ鍘嬪櫒鑳芥壙鍙楅珮杈�60V鐨勭灛鎬佺數鍘嬶紝鍚屾椂鍦ㄤ笉瀵圭郴缁熸€ц兘鎴栧彲闈犳€ч€犳垚褰卞搷鐨勫墠鎻愪笅缁存寔杈撳嚭绋冲畾銆備竴鑸儏鍐典笅锛岃繖浜涚ǔ鍘嬪櫒閮芥槸闄嶅帇鍨嬫垨闄嶅帇-鍗囧帇鍨嬭浆鎹㈠櫒锛屽彲缁忓彈鐢卞厖鐢�/鐢垫睜绯荤粺涓柇寮曡捣鐨勬苯杞︾數姹犲拰浜ゆ祦鍙戠數鏈虹殑鐢靛帇缃崲銆� |
[2005-11-16 11:41:15] |
[闂細wwwcom] |
璇烽棶涓撳锛�
1.瀵硅搫鐢垫睜鍐叉斁鐢靛浣曠鐞嗭紵
2.閰嶇數濡備綍绠$悊锛�
3.鏈夋病鏈夌數婧愮郴缁熸櫤鑳藉寲鎺у埗鐨勮В鍐虫柟妗堬紝姣斿鑷韩鐘舵€佹娴嬨€佹晠闅滃畾浣嶃€佹晠闅滄仮澶嶃€�
4.dc/dc闆嗕腑鍙樻崲鍜屽垎鏁e彉鎹㈤偅涓€涓ソ涓€浜�
5.瀵�10锝�40w鐨凞C/DC鏋楃壒鏈夎В鍐虫柟妗堝悧
6.濡傛灉鏄お闃宠兘鎻愪緵鍔ㄥ姏鐨勬苯杞︼紝濡備綍瀵瑰浣欑殑澶槼鑳借繘琛屽垎娴� |
[绛旓細Terry] |
These are very general questions and our answer is: it all depends!
We need more details in order to under the requirement. We have quite
a number of solutions that may be suitable, but just not easy to put a
simple answer here. |
[2005-11-16 11:45:17] |
[闂細yjems] |
鍑岀壒鏄惁鎻愪緵鐢垫簮鍣ㄤ欢鍦ㄦ苯杞﹀簲鐢ㄦ柟闈㈢殑鍙傝€冪數璺紝姣斿灏忕數娴佹娴嬨€佽疆鑳庡帇鍔涙娴嬬瓑锛熷浣曡幏鍙�/ |
[绛旓細Terry] |
Can you be more sepcific? How small current do you want to detect? High
side sensing or low side? |
[2005-11-16 11:45:52] |
[闂細yjs1112] |
璇疯鏄嶭TC3780涓嶭TC1871 SEPIC涔嬮棿鐨勬湁缂虹偣,澶氳阿! |
[绛旓細Dongyan] |
LTC3780 has advantages in efficiency and external component sizes.
As we mentioned in the seminar, both the switch currents and voltage stressed
during off-time are much less in LTC3780. Therefore, the efficiency
is much higher and we can use only one inductor with lower current rating. |
[2005-11-16 11:46:20] |
[闂細kkwd] |
LED椹卞姩鐨勫姛鐜囨槸澶氬皯锛岀敤鐨勪粈涔堟柟寮忓崌鍘嬶紵 |
[绛旓細Terry] |
It depends on how many LEDs and how much power you want to power up. |
[2005-11-16 11:46:25] |
[闂細h458] |
璇烽棶鍦ㄥ帵闂ㄧ殑浠g悊鍏徃鐨勫悕绉癨鐢佃瘽? |
[绛旓細Terry] |
Arrow: 0592-2394567
Cytech: 0592-5638488
Avent-Memec: 0592-5164701 |
[2005-11-16 11:49:27] |
[闂細zhoujiang100] |
SEPIC鏂规鏄笉鏄氨鏄鑳芥牴鎹緭鍏ョ數鍘嬫潵鑷姩鍗囧帇鎴栭檷鍘嬶紵璋㈣阿 |
[绛旓細Terry] |
Yes, it is. This is done by topology. |
[2005-11-16 11:50:53] |
[涓绘寔浜猴細ChinaECNet] |
鎭枩鎮紝 鍗庣澘绉戞妧鐨刲xs缁忚繃鐢佃剳鎶藉鎮ㄥ湪鏈搴ц皥涓幏寰椾竴閮∕P3鎾斁鍣ㄣ€傝缃戝悕涓簂xs鐨勭敤鎴蜂笌涓數缃戣仈绯�(8610-82888222-7008
鎴� lilin@chinaecnet.com)銆� |
[2005-11-16 11:51:34] |
[闂細qbw] |
鍝竴绉嶈姱鐗囪兘鍚告敹鐢垫劅璐熻浇鐨勫洖棣堢殑鑳介噺? |
[绛旓細Terry] |
I think this is asking of whether we can sink current. We have some
DDR part that has the ability to source and sink current. You can visit
our website to take a look on LTC3413, LTC3717 etc. |
[2005-11-16 11:52:55] |
[闂細pengq318] |
璇烽棶LINEAR鍦ㄧ數娴佹帶鍒舵柟闈�,濡�:鎭掓祦/杩囨祦淇濇姢鏂归潰鏈夋病鏈�?鏈変綍鐗圭偣?璋㈣阿 |
[绛旓細Glen] |
Yes, for example we have LT1970, which is an opamp with adjustable current
limit. Also, we have "circuit breaker" chips such as LTC4213. |
[2005-11-16 11:53:43] |
[闂細yjs1112] |
璇疯鏄庡噷鐗瑰叕鍙稿湪姹借溅鐢靛瓙棰嗗煙鐨勫崜瓒婅础鐚槸闈犱粈涔堝彇寰楃殑,澶氳阿! |
[绛旓細Terry] |
High reliability, good solution, robust system, innovative products,
good delivery and technical support. |
[2005-11-16 11:55:24] |
[闂細yjs1112] |
璇疯皥璋堥潰鍚戞苯杞﹀簲鐢ㄧ殑鐢垫祦妫€娴嬫斁澶у櫒鐨勭壒寰�,澶氳阿! |
[绛旓細Glen] |
Often the most important specification in automotive is the operating
temperature range. The LT6100 and LTC6101 have full automotive
operating range of -40 to 125C. Also important is fault and
overvoltage handling. Both parts can tolerate large differential
input voltages. The LTC6101 is also available in a 105V version. |
[2005-11-16 11:58:03] |
[闂細qbw] |
LTC6101鐢垫祦妫€娴嬬殑閲囨牱鐢靛帇鏈€澶т负澶氬皯? |
[绛旓細Glen] |
The maximum differential input voltage is determined by the input resistor. With
a large resistor you can have a larger sense voltage, but the accuracy
at small voltages will degrade.
The maximum supply voltage is 105V for the "HV" high voltage version. Otherwise
70V max supply. |
[2005-11-16 12:02:30] |