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Solutions Search - バッテリ・マネージメント

High Efficiency Solar MPPT Battery Charger Using LT8611 and AD5245

Perry Faubert - FAE Jul 10th 2017
Introduction Outdoor applications that use solar panels in the range of a few watts often use a microcontroller-based MPPT (Maximum Power Point Tracking)  function to extract the maximum power available over the full range of environmental operating conditions. Many microcontroller-based MPPT solutions designed for ...

Blog Post LTspice 

 

Wireless Current Sense Circuit Floats with Sense Resistor

Kris Lokere - Strategic Applications Manager Apr 25th 2017
Introduction Measuring the current that flows through a sense resistor seems easy. Amplify the voltage, read it with an ADC, and now you know what the current is. But it gets more difficult if the sense resistor itself sits at a voltage that is very different from system ground. Typical solutions bridge that voltage difference ...

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Maximizing Cell Monitoring Accuracy and Data Integrity in Energy Storage Battery Management Systems

Mike Kultgen - Design Director
Greg Zimmer - Senior Product Marketing Engineer
Jan 24th 2017
Grid-connected battery arrays are viable backup and carry-through power sources; application-specific measurement ICs which meet their unique and sophisticated requirements ensure reliable system performance. The use of large-scale battery arrays for backup and carry-through energy storage is getting increasing attention, as ...

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Active Battery Cell Balancing

Kevin B. Scott - Senior Strategic Marketing Engineer
Sam Nork - Boston Design Center Manager
Aug 18th 2016
With passive and active cell balancing, each cell in the battery stack is monitored to maintain a healthy battery state of charge (SoC). This extends battery cycle life and provides an added layer of protection by preventing damage to a battery cell due to deep discharging over overcharging. Passive balancing results in all ...

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Passive Battery Cell Balancing

Kevin B. Scott - Senior Strategic Marketing Engineer
Sam Nork - Boston Design Center Manager
Aug 18th 2016
In the automotive and transportation marketplace, large battery stacks provide high output power without producing harmful emissions (i.e. carbon monoxide and hydrocarbons) associated with gasoline-powered combustion engines. Ideally, each individual battery in the stack equally contributes to the system. However, when ...

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High-Voltage Amplifier Extends Coulomb Counter Range to +/-270V

Kris Lokere - Strategic Applications Manager Jan 22nd 2016
Introduction A coulomb counter can measure charge that flows into or out of a battery. Small, dedicated devices such as LTC2941 or LTC2943 can directly interface with low to medium battery voltages, up to about 20V. You can extend the input operating range of the measurement circuit by using a high-voltage amplifier as a level ...

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Determine Balancing Current for the LTC3305 Lead-Acid Battery Balancer

Jim Drew - Sr Apps Engineer Apr 14th 2015
Design Note DN539: Introduction The LTC®3305 is a lead-acid battery balancer that uses an auxiliary battery or an alternative storage cell (AUX) to transfer charge to and from individual batteries within a series-connected stack. The balancer controls external NMOS switches to sequentially connect the auxiliary battery ...

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LTC3890 & LTC4000 バッテリ・バックアップを備えた60V入力の電源

Victor Khasiev - Applications Engineer
Gabino Alonso - Strategic Marketing Engineer
Feb 27th 2015
はじめに この記事で取り上げる回路は小型の電源の設計に役立ち、入力の電力が中断する状態で動作するシステムに最適です。ここに示すソリューションは無停電電源システムや小型のスタンドアロン・モジュールに組み込むことができます ...

Blog Post Circuit LTspice 

 

Frequently Asked Questions: LTC4010 & LTC40111 NiCd / NiMH Battery Charger

Oct 7th 2014
The LTC4010 is a complete NiMH/NiCd battery charger solution that requires no microcontroller or firmware programming. The LTC4010 includes charge initiation, monitoring, protection, charge termination and constant current control circuitry for a fast, autonomous charger solution. The IC can fast charge 1- to 16-cell NiMH ...

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55V High Efficiency Buck-Boost Power Manager and Multi-Chemistry Battery Charger

Charlie Zhao - Applications Eng Aug 27th 2014
Design Note DN531: Introduction Today, battery chargers are expected to easily support a variety of battery chemistries and accept a range of voltage inputs, including wide-ranging solar panels. It is increasingly common for input voltage ranges to span above and below the output battery voltage, requiring both step-down and ...

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高バッテリ充電電流向けに2個使いしたLTC4120ワイヤレス・パワー・レシーバ

Andy Bishop - Design Engineer
Gabino Alonso - Strategic Marketing Engineer
Aug 27th 2014
LTC4120は、定電流/定電圧のワイヤレス・レシーバおよびバッテリ・チャージャです。外付けのプログラミング抵抗により、最大400mAの充電電流が設定されます。400mA以上必要な場合、この回路図に示されているように、LTC4120デバイスを2個使って並列動作させます ...

Blog Post Circuit LTspice 

 

TechClip Videos – Real, Repeatable Performance

Willie Chan - Sr PME Power Modules Jun 23rd 2014
With the advent of internet services like YouTube, product videos have become an important means for manufacturers to demonstrate the capabilities of their wares to customers, consumers and businesses alike. However, much like the products themselves, the quality and content of all product videos is not the same. Inspired by ...

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Techniques to Maximize Solar Panel Power Output

Trevor Barcelo - Product Line Manager - Battery Management Feb 3rd 2014
Two recent articles, "Energy Harvesting With Low Power Solar Panels" and  "Solar Battery Charger Maintains High Efficiency at Low Light", discuss how to efficiently harvest energy with low power solar panels. Both of these articles mention a concept known as maximum power, which in the context of solar panels is the ability ...

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低照度時も高効率を維持するソーラーバッテリチャージャ

Jay Celani - Staff Design Engineer Oct 31st 2013
ソーラーパネルの重要な特性は、照度に関わらずピーク電力出力が比較的一定の動作電圧(VMP)で得られることです(図2参照)。LT3652 2Aバッテリチャージャはこの特性を利用して、入力電圧を安定化することによってソーラーパネルの動作効率を最大限に維持します(特許申請中) ...

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Frequently Asked Questions: Wireless Power Transfer (WPT) & LTC4120

Trevor Barcelo - Product Line Manager - Battery Management Oct 31st 2013
Q. What is wireless power transfer (WPT)? A. Wireless Power Transfer (WPT) is the process where electrical energy is transmitted from a power source to an electrical load across an air gap using induction coils. These coils produce an electromagnetic field which sends energy from a charging base station (transmitter) to a coil ...

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What to Do If You Can’t Find a Battery Charger IC for Your Application

Trevor Barcelo - Product Line Manager - Battery Management Jun 25th 2013
Batteries are used in an application space that is broad and varied.  To accommodate such a wide range of products, battery charger IC manufacturers have an almost equally broad and varied line-up of solutions. However, it is virtually impossible for companies, such as Linear Technology, to predict all of the clever ways ...

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新しいICテクノロジーが大型リチウムイオン・バッテリ・パックの性能を向上

Mike Kultgen - Design Director Nov 5th 2012
リチウムイオン・セルで構成される16kW-hrのバッテリ・パックは、電気自動車への電力の供給やグリッド・エネルギーの蓄積を行います。バッテリ・パックの動作時間の延長と安全性の確保のため、LTC®6804などの測定用ICが使用されます。測定用ICの精度により、システム・コストが影響を受ける可能性があります ...

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