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雙向<b>dc-dc</b>變換器

太陽能電池板電池充電技術手冊

Advances in low power electronics now allow placementof battery-powered sensors and other devices in locationsfar from the power grid. Ideally, for true grid independence,the batteries should not need replacement, but instead berecharged using locally available renewable energy, suchas solar power. This Design Note shows how to producea compact battery charger that operates from a small2-cell solar panel. A unique feature of this design is thatthe DC/DC converter uses power point control to extractmaximum power from the solar panel.

標簽： 太陽能電池板電池充電技術手冊

上傳時間： 2014-01-20

上傳用戶：wettetw
如何制作使用μModule降壓穩壓器的輸入輸出電壓

Linear Technology’s DC/DC step-down μModule®regulators are complete switchmode power supplies in asurface-mount package. They include the DC/DC controller,inductor, power switches and supporting circuitry.These highly integrated regulators also provide an easysolution for applications that require negative outputvoltages. In other words, these products can operate asinverting buck-boost regulators. As a result, the lowestpotential in the circuit is not the standard 0V, but –VOUT,which must be tied to the μModule regulator’s GND. Allsignals are now referred to –VOUT.

標簽： Module 如何制作降壓穩壓器輸入輸出

上傳時間： 2013-10-22

上傳用戶：ztj182002
DN457寬輸入電壓范圍同步降壓穩壓器

The LTC®3610 is a high power monolithic synchronousstep-down DC/DC regulator that can deliver up to 12Aof continuous output current from a 4V to 24V (28Vmaximum) input supply. It is a member of a high currentmonolithic regulator family (see Table 1) that featuresintegrated low RDS(ON) N-channel top and bottomMOSFETs. This results in a high effi ciency and highpower density solution with few external components.This regulator family uses a constant on-time valleycurrent mode architecture that is capable of operatingat very low duty cycles at high frequency and with veryfast transient response. All are available in low profi le(0.9mm max) QFN packages.

標簽： 457 DN 寬同步降壓

上傳時間： 2013-11-07

上傳用戶：moerwang
自舉偏置高輸入電壓降壓型控制器

High voltage buck DC/DC controllers such as the LTC3890(dual output) and LTC3891 (single output) are popular inautomotive applications due to their extremely wide 4V to60V input voltage range, eliminating the need for a snubberand voltage suppression circuitry. These controllersare also well suited for 48V telecom applications whereno galvanic isolation is required.

標簽： 自舉偏置輸入電壓降壓型控制器

上傳時間： 2013-10-31

上傳用戶：wwwe
陶瓷輸入電容可導致過壓瞬變

A recent trend in the design of portable devices has beento use ceramic capacitors to filter DC/DC converter inputs.Ceramic capacitors are often chosen because of theirsmall size, low equivalent series resistance (ESR) and highRMS current capability. Also, recently, designers havebeen looking to ceramic capacitors due to shortages oftantalum capacitors.

標簽： 陶瓷輸入電容過壓

上傳時間： 2013-11-05

上傳用戶：comer1123
LTM4600 DCDC微型模塊熱性能

The LTM4600 DC/DC μModule regulator is a complete highpower density stepdown regulator for 10A continuous (14Apeak) loads. The device has two voltage options: 20VINmaximum for the LTM4600EV and 28VIN maximum for theLTM4600HVEV each housed in a small 15mm ¥ 15mm ¥2.8mm LGA surface mount package.

標簽： 4600 DCDC LTM 微型模塊

上傳時間： 2013-10-10

上傳用戶：adada
LT1300和LT1301在功率DCDC轉換器中的應用

The design of battery-powered equipment can often bequite challenging. Since few ICs can operate directly fromthe end-of-life voltage from a 2-cell battery (about 1.8V),most systems require a DC/DCconverter. The systemdesigner often has a limited area in which to place the DC/DC converter; associated inductors and capacitors must be

標簽： LT 1300 1301 DCDC

上傳時間： 2013-11-23

上傳用戶：wys0120
使用新電源模塊改進表面貼裝可制造性

The latest generation of Texas Instruments (TI) boardmountedpower modules utilizes a pin interconnect technologythat improves surface-mount manufacturability.These modules are produced as a double-sided surfacemount(DSSMT) subassembly, yielding a case-less constructionwith subcomponents located on both sides of theprinted circuit board (PCB). Products produced in theDSSMT outline use the latest high-efficiency topologiesand magnetic-component packaging. This providescustomers with a high-efficiency, ready-to-use switchingpower module in a compact, space-saving package. Bothnonisolated point-of-load (POL) switching regulators andthe isolated dc/dc converter modules are being producedin the DSSMT outline.TI’s plug-in power product line offers power modules inboth through-hole and surface-mount packages. The surfacemountmodules produced in the DSSMT outline use asolid copper interconnect with an integral solder ball fortheir

標簽： 電源模塊可制造性表面貼裝

上傳時間： 2013-10-10

上傳用戶：1184599859
多路電源XRP7714參數設置及外圍器件的選擇

XRP7714是一款四輸出脈寬調制（PWM）分級降壓（step down）DC-DC控制器，并具有內置LDO提供待機電源。該器件在單個IC上為電池供電的產品提供了整套的電源管理方案，并且通過內含的I2C串行接口進行整體的編程配置。XRP7714器件的每一路輸出電壓的編程范圍是0.9V～5.1V，此范圍內無需外部分壓器。可編程DPWM開關頻率的范圍從300kHz到1.5MHz，使用戶能夠在效率和元件大小之間取得最優方案。為了讓用戶能夠在設計的多路電源XRP7714系統能夠取得最優的方案，下文將詳細的介紹影響XRP7714系統效率的參數設置以及外圍器件的選型。

標簽： 7714 XRP 多路電源參數

上傳時間： 2013-10-31

上傳用戶：chendawei
利用開關電源為高速模數轉換器供電

簡介采用模數轉換器(ADC)的現代電子系統要求更低功耗和更高性能。本文描述了采用線性電源和開關電源之間的差異，并論證了將高效DC-DC轉換器和高性能模數轉換器組合使用，可以顯著降低系統功耗，同時不降低模數轉換器的性能。

標簽： 開關電源供電高速模數轉換器

上傳時間： 2013-10-27

上傳用戶：哈哈hah

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