A frequent requirement in systems involves drivinganalog signals into non-linear Or reactive loads. Cables,transfOrmers, actuatOrs, motOrs and sample-hold circuitsare examples where the ability to drive diffi cult loads isrequired. Although several power buffer amplifi ers areavailable, none have been optimized fOr driving diffi cultloads.
上传时间： 2014-12-24
上传用户：1109003457
Abstract: As electronic systems take over many of the mechanical functions in a car—ranging from engine timing to steering andbraking—there is a growing concern about fault tolerance. There should not be a single point of failure that would prevent a car fromat least "limping" off the road Or making it to the nearest service station. Redundant systems, watchdog timers, and other controlcircuits are used to reroute signals and perfOrm other functions that ensure that a vehicle can safely make it off the road when afailure occurs.
上传时间： 2013-11-10
上传用户：diets
A large group of fiber optic lasers are powered by DCcurrent. Laser drive is supplied by a current source withmodulation added further along the signal path. Thecurrent source, although conceptually simple, constitutesan extraOrdinarily tricky design problem. There are anumber of practical requirements fOr a fiber optic currentsource and failure to consider them can cause laser and/Or optical component destruction.
上传时间： 2013-10-30
上传用户：wanghui2438
As logic systems get larger and mOre complex, theirsupply current requirements continue to rise. Systemsrequiring 100A are fairly common. A high current powersupply to meet such requirements usually requires parallelingseveral power regulatOrs to alleviate the thermalstress on the individual power components. A powersupply designer is left with the choice of how to drive theseparalleled regulatOrs: brute-fOrce single-phase Or smartPolyPhaseTM.
上传时间： 2013-10-08
上传用户：zhqzal1014
This collection of circuits was wOrked out between June1991 and July of 1994. Most were designed at customerrequest Or are derivatives of such effOrts. All representsubstantial effOrt and, as such, are disseminated here fOrwider study and (hopefully) use.1 The examples areroughly arranged in categOries including power conversion,transducer signal conditioning, amplifiers and signalgeneratOrs. As always, reader comment and questionsconcerning variants of the circuits shown may be addresseddirectly to the authOr.
上传时间： 2013-11-15
上传用户：凌云御清风
In an increasing trend, telecommunications, netwOrking,audio and instrumentation require low noise power supplies.In particular, there is interest in low noise, lowdropout linear regulatOrs (LDO). These components powernoise-sensitive circuitry, circuitry that contains noisesensitiveelements Or both. Additionally, to conserve power,particularly in battery driven apparatus such as cellulartelephones, the regulatOrs must operate with low input-tooutputvoltages.1 Devices presently becoming availablemeet these requirements (see separate section, “A Familyof 20mVRMS Noise, Low Dropout RegulatOrs”).
上传时间： 2013-10-30
上传用户：yeling1919
The LTM4601 DC/DC μModule regulatOr is a completehigh power density stepdown regulatOr fOr up to 12Acontinuous (14A peak) loads. The device is housed ina small 15mm ¥ 15mm ¥ 2.8mm LGA surface mountpackage, thus the large power dissipation is a challengein some applications. This thermal application note willprovide guidelines fOr using the μModule regulatOr inambient environments with Or without air fl ow. Loadcurrent derating curves are provided fOr several inputvoltages and output voltages versus ambient temperatureand air fl ow.
上传时间： 2013-10-19
上传用户：bakdesec
Switching regulatOrs are of universal interest. LinearTechnology has made a majOr effOrt to address this topic.A catalog of circuits has been compiled so that a designengineer can swiftly determine which converter type isbest. This catalog serves as a visual index to be browsedthrough fOr a specific Or general interest.
标签： Collection Switching RegulatOr Circuit
上传时间： 2013-11-09
上传用户：mh_zhaohy
The LTM8020, LTM8021, LTM8022 and LTM8023 μModule®regulatOrs are complete easy-to-use encapsulated stepdownDC/DC regulatOrs intended to take the pain and aggravationout of implementing a switching power supplyonto a system board. With a μModule regulatOr, you onlyneed an input cap, output cap and one Or two resistOrsto complete the design. As one might imagine, this highlevel of integration greatly simplifi es the task of printedcircuit board design, reducing the effOrt to four categOries:component footprint generation, component placement,routing the nets, and thermal vias.
上传时间： 2014-01-18
上传用户：laomv123
POrtable, battery-powered operation of electronic apparatushas become increasingly desirable. Medical, remotedata acquisition, power monitOring and other applicationsare good candidates fOr batteryoperation. In some circumstances,due to space, power Or reliability considerations,it is preferable to operate the circuitry from a single 1.5Vcell. UnfOrtunately, a 1.5V supply eliminates almost alllinear ICs as design candidates. In fact, the LM10 opamp-reference and the LT®1017/LT1018 comparatOrs arethe only IC gain blocks fully specifi ed fOr 1.5V operation.Further complications are presented by the 600mV dropof silicon transistOrs and diodes. This limitation consumesa substantial pOrtion of available supply range, makingcircuit design diffi cult. Additionally, any circuit designedfOr 1.5V operation mustfunction at end-of-life batteryvoltage, typically 1.3V. (See Box Section, “ComponentsfOr 1.5V Operation.”)
标签： Circuitry Operation Single Cell
上传时间： 2013-10-30
上传用户：hz07104032
