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DC-DC電源

一種新型軟開關(guān)雙向DC-DC變換器

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標(biāo)簽： DC-DC 軟開關(guān) 變換器

上傳時(shí)間： 2013-11-03

上傳用戶：maricle
DCDC模塊輸入端電壓反加后的影響分析

在航天等空間產(chǎn)品中使用的分布式供電系統(tǒng)中，總體電路一般只提供27~30 V的直流一次電源，各單機(jī)產(chǎn)品大多采用DC/DC模塊將該一次電源轉(zhuǎn)換為所需的二次電源，并實(shí)現(xiàn)一次地與二次地的隔離。分析了INTERPOINT公司的DC/DC模塊的輸入端反接后，輸入電壓對(duì)DC/DC模塊、電源保護(hù)濾波電路及負(fù)載的影響，通過仿真與驗(yàn)證試驗(yàn)，得出電源模塊輸入端反接后單機(jī)產(chǎn)品中電源保護(hù)電路發(fā)生作用，對(duì)產(chǎn)品中負(fù)載無影響，可以繼續(xù)使用。電源模塊失效分析對(duì)航天產(chǎn)品中電源模塊中出現(xiàn)類似的故障后的處理提供了參考。

標(biāo)簽： DCDC 模塊分輸入端

上傳時(shí)間： 2013-11-05

上傳用戶：kangqiaoyibie
簡(jiǎn)單、高效USB電源管理IC解決方案

Linear Technology offers a variety of devices that simplifyconverting power from a USB cable, but the LTC®3455represents the highest level of functional integration yet. The LTC3455 seamlessly manages power flowbetween an AC adapter, USB cable and Li-ion battery,while complying with USB power standards, all from a4mm × 4mm QFN package. In addtion, two high efficiencysynchronous buck converters generate low voltage railswhich most USB-powered peripherals require. TheLTC3455 also provides power-on reset signals for themicroprocessor, a Hot SwapTM output for poweringmemory cards as well as an uncommitted gain blocksuitable for use as a low-battery comparator or an LDOcontroller. The PCB real estate required for the entire USBpower control circuit and two DC/DC converters is only225mm2.

標(biāo)簽： USB 電源管理IC 方案

上傳時(shí)間： 2013-11-02

上傳用戶：名爵少年
MSP430與bq電量計(jì)間采用SMBus通信接口的寬輸入電池充電器

本應(yīng)用報(bào)告描述了一個(gè)具有寬電壓輸入的智能電池充電器。其中的參考設(shè)計(jì)實(shí)現(xiàn)了在MSP430微控制器和兼容SMBus的電池電量計(jì)之間進(jìn)行通信的系統(tǒng)管理總線（SMBus）協(xié)議。MSP430 器件通過SMBus 從電量計(jì)獲取電壓、電流和其它一些參數(shù)，之后通過調(diào)節(jié)輸出到dc/dc變換器模塊的PWM 占空比來傳遞電池所需的電量。

標(biāo)簽： SMBus MSP 430 bq電量計(jì)

上傳時(shí)間： 2013-10-28

上傳用戶：1427796291
替代LM2596的A7596

完全替代原裝國(guó)半DC-DC產(chǎn)品LM2596系列產(chǎn)品，性價(jià)比優(yōu)勢(shì)！

標(biāo)簽： A7596 2596 LM

上傳時(shí)間： 2013-10-24

上傳用戶：moshushi0009
FP6291

DC/DC 升壓IC：The FP6291 is a current mode boost DC-DC converter. Its PWM circuitry with built-in 0.25 Ω power MOSFET make this regulator highly power efficient. The internal compensation network also minimizes as much as 6 external component counts. The non-inverting input of error amplifier connects to a 0.6V precision reference voltage and internal soft-start function can reduce the inrush current. The FP6291 is available in the SOT23-6L package and provides space-saving PCB for the application fields.

標(biāo)簽： 6291 FP

上傳時(shí)間： 2013-11-07

上傳用戶：3294322651
DN387 級(jí)聯(lián)7A點(diǎn)的負(fù)載單片降壓轉(zhuǎn)換器

Easy-to-use and compact point-of-load power suppliesare necessary in systems with widely distributed, highcurrent, low voltage loads. The LTC®3415 provides acompact, simple and versatile solution. It includes a pairof integrated complementary power MOSFETs (32mΩtop and 25mΩ bottom) and requires no external senseresistor. A complete design requires an inductor andinput/output capacitors, and that’s it. The result is a fast,constant frequency, 7A current mode DC/DC switchingregulator.

標(biāo)簽： 387 DN 級(jí)聯(lián) 負(fù)載

上傳時(shí)間： 2013-10-18

上傳用戶：avensy
DN378 低靜態(tài)電流單片式降壓型穩(wěn)壓器

Automobile electronic systems place high demands ontoday’s DC/DC converters. They must be able to preciselyregulate an output voltage in the face of wide temperatureand input voltage ranges—including load dump transientsin excess of 60V and cold crank voltage drops to 4V. Theconverter must also be able to minimize battery drain inalways-on systems by maintaining high effi ciency over abroad load current range. Similar demands are made bymany 48V nonisolated telecom applications, 40V FireWireperipherals and battery-powered applications with autoplug adaptors. The LT3437’s best in classperformancemeets all of these requirements in a small thermallyenhanced 3mm × 3mm DFN package.

標(biāo)簽： 378 DN 低靜態(tài)電流單片式

上傳時(shí)間： 2013-10-15

上傳用戶：stampede
高功率PoE PD接口與集成反激式控制器

To this day, Power over Ethernet (PoE) continues to gainpopularity in today’s networking world. The 12.95Wdelivered to the Powered Device (PD) input supplied bythe Power Sourcing Equipment (PSE) is a universal supply.Each PD provides its own DC/DC conversion from anominal 48V supply, thus eliminating the need for a correctvoltage wall adapter. However, higher power devicescan not take advantage of standard PoE because of itspower limitations, and must rely on a large wall adapteras their primary supply. The new LTC4268-1 breaks thispower barrier by allowing for power of up to 35W for suchpower-hungry 2-pair PoE applications. The LTC4268-1provides a complete solution by integrating a high powerPD interface control with an isolated fl yback controller.

標(biāo)簽： PoE 高功率 PD接口集成

上傳時(shí)間： 2014-12-24

上傳用戶：jasson5678
DN443 2.2V降壓型同步控制器

Many telecommunications and computing applicationsneed high effi ciency step-down DC/DC converters thatcan operate from a very low input voltage. The highoutput power synchronous controller LT3740 is idealfor these applications, converting input supplies rangingfrom 2.2V to 22V to outputs as low as 0.8V with loadcurrents from 2A to 20A. Applications include distributedpower systems, point-of-load regulation and conversionof logic supplies.

標(biāo)簽： 443 2.2 DN 降壓型

上傳時(shí)間： 2013-11-05

上傳用戶：zhf01y