電源/新能源

提供權(quán)威的電源和新能源設(shè)計及電源管理資訊，內(nèi)容有醫(yī)療/工業(yè)電源、LED驅(qū)動、數(shù)字電源、電池技術(shù)、太陽能光伏等電源技術(shù)方案，包括電源測試/仿真/認(rèn)證、便攜電源、電動車/新能源、AC-DC與DC-DC轉(zhuǎn)換、基準(zhǔn)/監(jiān)控/保護(hù)電路等專業(yè)領(lǐng)域。

全部新品資訊技術(shù) 資料企業(yè) 論壇電源管理選型

Maxim為什么選擇設(shè)計單片NV SRAM模塊

摘要：為了理解Maxim的單芯片模塊設(shè)計原則，首先需要知道電池備份存儲器的開發(fā)歷史。開發(fā)NV SRAM的目的是生產(chǎn)一種類似于IC的混合存儲器產(chǎn)品，利用低功耗SRAM配合鋰...

2009-04-23 標(biāo)簽：模塊 sram 702

Battery-Switchover Circuit Acc

Abstract: Portable systems often require operation from batteries or from a wall adapter. The MAX8865 low-dropout (LDO) linear regulator is used to provide the switchover function while supplying a regulator 2.84V that can deliver 100mA. ...

2009-04-23 標(biāo)簽： 1236

大型電容器替代備用電池-Large Capacitor Re

Abstract: Use a supercap to reduce cost of simple battery backup circuits. In low-power systems that require a battery backup switchover circuit during brownout conditions, a supercap may provide adequate power to maintain memory operation...

2009-04-23 標(biāo)簽：電容器 1052

PC Chipset Power Fail and Rese

Abstract: The following application note discusses the advantages of using the DS1632 PC Power Fail and Reset Controller to consolidate various power management functions into one device vs. using discreet components. The DS1632 performs c...

2009-04-23 標(biāo)簽：Chipset 1983

在斷電時如何保存數(shù)據(jù)-How to Save Data Du

Abstract: The following application note discusses how the DS1233 can be used to save data during a power failure without corrupting the NV SRAM. For many memory systems requiring nonvolatile memory, Dallas Semiconductor ...

2009-04-23 標(biāo)簽：數(shù)據(jù) 2275

微電路具有自動關(guān)機和低電池鎖定功能-Micropower C

Abstract: The following application note provides a circuit that automatically performs shutdown, power-up, and low-battery lockout functions without the need for software control. This micropower circuit provides shutdow...

2009-04-23 標(biāo)簽：微電路 1096

Switching Between Battery and

Abstract: The following application note discusses a circuit that switches power sources efficiently without switching noise using the MAX6326. It discusses the advantages of using this technique over a simple diode-ord method. ...

2009-04-23 標(biāo)簽：Battery Po 4062

最大限度地延長電池壽命，減少更換-Maximize Batt

Abstract: The MAX6326 microprocessor supervisor is used in an application to provide a battery switchover circuit when the wall adapter is disconnected. The reset output drives an external MOSFET that is used as a switch. This switchover c...

2009-04-23 標(biāo)簽： 624

低成本供應(yīng)交流-Low-Cost AC Supply

Abstract: The following application note discusses a low-cost solution to implement a 3V, 3.3V or 5V logic supply from AC power. It uses the MAX6330 shunt regulator which can supply up to 50mA as well as offering a reset output (power-on r...

2009-04-23 標(biāo)簽：電源 858

Battery Monitoring in NV SRAM

Abstract: As a prerequisite to this article, it is recommended that Application Note 505 be reviewed to gain a better understanding of the general behavior of lithium coin-cell batteries.Dallas Semiconductor offers a variety of pro...

2009-04-23 標(biāo)簽：Battery 1952

上電復(fù)位與相關(guān)監(jiān)控功能

摘要：本文討論用于單電源或雙電源處理器的上電復(fù)位功能和門限電壓的選擇策略，另外，還探討了手動復(fù)位、電源失效和低電壓檢測等功能。文中闡述了避免使用分立POR和處理器...

2009-04-23 標(biāo)簽：復(fù)位 883

高可靠系統(tǒng)的電源電壓監(jiān)控和排序

摘要：該應(yīng)用筆記說明高可靠系統(tǒng)中合理監(jiān)控電源電壓和電源排序的必要性，給出了監(jiān)控器的選擇標(biāo)準(zhǔn)，并說明上電復(fù)位(POR)電路、多電壓監(jiān)控和余量功能的必要性。另外，還討論了...

2009-04-23 標(biāo)簽：監(jiān)控排序 1383

過壓保護(hù)的備用電路: 技巧和竅門

摘要：過壓保護(hù)(OVP)器件用于保護(hù)后續(xù)電路免受甩負(fù)載或瞬間高壓的破壞，在某些特定的應(yīng)用中，基本的過壓保護(hù)電路不足以勝任器件保護(hù)的要求，通常有以下兩種需求。第一，電路...

2009-04-23 標(biāo)簽：備用電路 841

Boost Converter Yields Orderly

Some microprocessor (µP) systems require more time for shutdown than is provided by conventional circuits for power-fail detection. Between first warning and the actual loss of power, such systems have extensive "housekeeping" tasks ...

2009-04-23 標(biāo)簽：Converter 1756

監(jiān)集成電路監(jiān)控電池供電設(shè)備-Supervisor ICs M

Abstract: To ensure correct operation, most microprocessor-based systems require supervision during power-up and power-down, and when entering or exiting shutdown or sleep mode. The supervisor may only provide a power-on reset, or it may o...

2009-04-23 標(biāo)簽：集成電路 751

復(fù)位電路確保有效的電源電壓-Reset Circuit En

Abstract: This article focuses on using an external MOSFET switch to ensure a valid system voltage is present before applying it to the load. This simple circuit uses a reset circuit and the MOSFET to provide a protection circuit during po...

2009-04-23 標(biāo)簽：復(fù)位電路 2238