摘要：DC-DC轉換器常用于采用電池供電的便攜式及其它高效系統，在對電源電壓進行升壓、降壓或反相時，其效率高于95%。電源內阻是限制效率的一個重要因素。本文描述了電源內阻...

摘要：最終用戶是否滿意其便攜式設備的設計，很大程度上取決于電池的性能。 電池的關鍵指標當然是電池的使用壽命。從表面上看，這只是一個簡單的規格，但它卻涉及到了...

摘要：本文討論用于單電源或雙電源處理器的上電復位功能和門限電壓的選擇策略，另外，還探討了手動復位、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...

Abstract: This article about low-voltage ICs discusses many types of low-voltage ICs, including voltage regulators, data converters, op amps and current monitors, comparators, microprocessor supervisors, voltage references, analog switches...

摘要：許多電池電流監測應用中需要雙向電流檢測功能，以測量電池的充電和放電電流。本文介紹了怎樣用兩個單向電流檢測放大器，比如MAX4172和MAX4173，組成一個雙向電流檢測放大...

Abstract: This application note describes the use of a current-sense amplifier to monitor the load current of a circuit supply voltage. When the current being drawn from the supply exceeds the predetermined level, an external pass transist...

Derive 12V...

Abstract: Using a current-sense amplifier, a high-side MOSFET driver, and a latching voltage monitor a circuit can be easily constructed that protects from overcurrent conditions and operates at voltages as high as 26V. W...

Abstract: A current-sense amplifier, comparator, external CMOS switch, and an external transistor can be used to create a circuit breaker. The simplicity of low-side current monitoring can mask the advantages of a high-si...

Abstract: A combination of current-sense amplifier, dual-comparator and external CMOS switches can be used to prevent the damaging effects of a reversed-polarity battery or short-circuit load. The most widely used device ...

Abstract: The flyback dc-dc converter topology results in significant cost and space savings for multiple output power supplies with high output voltage for power levels up to 100W. Flyback topologies store and transfer energy using a tran...

Abstract: This application note describes the use of current sense amplifiers, differential amplifiers and instrumentation amplifiers to measure battery charge and discharge currents in portable equipment, computer notebooks and USB access...

高側電流傳感器顯示正...

Abstract: Output overvoltage protection is a critical feature for DC-DC converters in order to protect sensitive loads from permanent damage. The basic requirements for an overvoltage protection (OVP) circuit are precise sensing of the out...

摘要：本應用筆記討論過壓保護在連接系統電路的開關和復用器中的必要性。MAX4711/MAX4712/MAX4713模擬開關工作在2.7V至11V，集成了故障保護功能。本文還介紹了其它幾種故障保護方案...

摘要：利用遠程溫度傳感器監測高性能微處理器和圖象處理器的管芯溫度現已成為一種很普通的技術，被用于系統的功率和熱量等工況的管理。隨著時鐘速度、電路密度和功率水平...

Abstract: This circuit provides flexible fault protection for a 4-20mA current loop. In addition, it includes circuitry for recovering digital signals (such as the HART protocol) imposed on the loop. 4-20mA current loops ...

摘要：對于那些想要測量系統中溫度的設計師來說，有多種技術可供選用。熱敏電阻、熱電偶、RTD及溫度傳感器IC，它們在特定情況下都具有相應的優勢及劣勢。本文對當前幾種最常...

Abstract: Combining a low-dropout (LDO) linear regulator with an OR gate produces a circuit that allows a single pushbutton to turn a microprocessor-based portable system on and off. When placing a microprocessor-based po...

Abstract: A microprocessor-supervisor IC and two external MOSFET switches form a low-voltage backup power supply that can provide several amperes when the main supply fails. Every subsystem in an electronic product depend...