開關電源設計資料
上傳時間： 2013-11-08
上傳用戶：李哈哈哈
針對電源設備出廠老化測試電能浪費問題，設計了一種基于TMS320F28335DSP的恒流型饋能式電子負載。描述了一種原邊帶箝位二極管的ZVS移相全橋變換器的工作特點，采用了一種簡便易行的移相波形數字控制方法；基于DC/DC電壓前饋、DC/AC電壓電流雙環控制方法，研制出一臺3.5 kW試驗樣機。實驗結果表明：該系統性能穩定、調節速度快，能很好地滿足測試老化及饋網要求。
上傳時間： 2013-10-13
上傳用戶：yd19890720
EG8010是一款數字化的、功能很完善的自帶死區控制的純正弦波逆變發生器芯片，應用于DC-DC-AC兩級功率變換架構或DC-AC單級工頻變壓器升壓變換架構，外接12MHz晶體振蕩器，能實現高精度、失真和諧波都很小的純正弦波50Hz或60Hz逆變器專用芯片。該芯片采用CMOS工藝，內部集成SPWM正弦發生器、死區時間控制電路、幅度因子乘法器、軟啟動電路、保護電路、RS232串行通訊接口和12832串行液晶驅動模塊等功能。 應用領域 ? 單相純正弦波逆變器 ? 光伏發電逆變器 ? 風力發電逆變器 ? 不間斷電源UPS系統 ? 數碼發電機系統 ? 中頻電源 ? 單相電機調速控制器 ? 單相變頻器 ? 正弦波調光器 ? 正弦波調壓器 ? 正弦波發生器 ? 逆變焊機
上傳時間： 2014-07-04
上傳用戶：fairy0212
在航天等空間產品中使用的分布式供電系統中，總體電路一般只提供27~30 V的直流一次電源，各單機產品大多采用DC/DC模塊將該一次電源轉換為所需的二次電源，并實現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DC/DC模塊、電源保護濾波電路及負載的影響，通過仿真與驗證試驗，得出電源模塊輸入端反接后單機產品中電源保護電路發生作用，對產品中負載無影響，可以繼續使用。電源模塊失效分析對航天產品中電源模塊中出現類似的故障后的處理提供了參考。
上傳時間： 2013-11-05
上傳用戶：kangqiaoyibie
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.
上傳時間： 2013-11-02
上傳用戶：名爵少年
本應用報告描述了一個具有寬電壓輸入的智能電池充電器。其中的參考設計實現了在MSP430微控制器和兼容SMBus的電池電量計之間進行通信的系統管理總線（SMBus）協議。MSP430 器件通過SMBus 從電量計獲取電壓、電流和其它一些參數，之后通過調節輸出到dc/dc變換器模塊的PWM 占空比來傳遞電池所需的電量。
上傳時間： 2013-10-28
上傳用戶：1427796291
完全替代原裝國半DC-DC產品LM2596系列產品，性價比優勢！
上傳時間： 2013-10-24
上傳用戶：moshushi0009
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.
上傳時間： 2013-11-07
上傳用戶：3294322651
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.
上傳時間： 2013-10-18
上傳用戶：avensy
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.
上傳時間： 2013-10-15
上傳用戶：stampede
