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多种电池组应用的DS2760或DS2761-Multiple
Abstract: This application note presents to the reader a recommended reference circuit design that supports monitoring and control of power delivery to a multiple battery system using the Dallas Semiconductor DS2760 or DS2761 battery monit...
2009-04-30 1410
The FET-OR Connection for Powe
Abstract: This power-supply sequencer senses a loss of the main supply voltage and, by controlling the two FETs, automatically switches the load to the secondary (backup) supply. The Figure 1 circuit provides a "diode-OR"...
2009-04-30 630
使用DS2746确定一个电池包基于识别电阻-Using th
Abstract: The DS2746 has two auxiliary inputs to allow voltage sampling of resistor divider circuits; these inputs are ideal for measuring thermistor or battery-pack identification resistors. This application note describes how to calculat...
2009-04-30 729
电路提供电池反向保护-Circuit Provides Re
A universal problem in battery-operated devices is the threat of damage when an end user (never an engineer) inserts the battery backward. You can avoid damage by inserting a single diode or by using a diode-bridge configuration, but those...
2009-04-30 483
检测和校准1 DS2760锂电池监测与保护器电路-Testi
Abstract: This application note describes to the reader how to properly test a circuit board and battery pack containing a Dallas Semiconductor DS2760 battery monitor and protector. A step-by-step test procedure is provided which can be fo...
2009-04-30 1245
DS276x产品比较-DS276x Product Comp
Abstract: This application note describes the differences between the DS2760 battery monitor and protector and the DS2761 battery monitor and protector. It describes each difference in detail and indicates what, if any, changes would be re...
2009-04-30 740
Overcurrent/Overdischarge Prot
Abstract: This application note describes the use of a current-sense amplifier with internal dual comparators to monitor and protect against too low battery voltage and too high battery current. While written for lead-acid batteries, the c...
2009-04-30 881
MOSFET驱动器是电池反向保护-MOSFET Driver
Abstract: MOSFET power-switch drivers must be protected from a reverse-battery connection. A small rectifier diode can protect against reversed batteries, but that approach is generally unacceptable for systems in which battery life is cru...
2009-04-30 1384
电路的镍氢电池可单模拟锂电池-Circuit Enables
Abstract: This circuit uses a NiMH cell to replace a lithium battery. Its output simulates the discharge characteristic of a lithium (Li+) battery. IntroductionLithium-based (Li+) batteries are becoming common ...
2009-04-30 536
充电器反接时，DS2784高边nFET保护器的保护电路
摘要：DS2784高边nFET保护器没有针对充电器反接的保护电路。因此，故障状态下，如果充电器反向连接，DC FET将可能处于导通状态。本文介绍了发生充电器反接时可使DC FET保持关闭的...
2009-04-30 1299
利用DS2726在充电器反接时保护Li+电池
摘要：本应用笔记通过简单的设计修改，可以利用DS2726 Li+电池保护器承受负压，在充电器反接时为电池提供保护。 概述充电器反接会损坏DS2726 Li+电池保护器。...
2009-04-30 709
Switch-Mode Supply Charges Bat
In the portable-system power supply of Figure 1, L2 and Q2 are part of an unorthodox battery-charger configuration for the auxiliary switch-mode output (which normally generates a negative bias voltage for LCDs). Combining the battery char...
2009-04-30 1622
升压型DC-DC电压调节器转换为电流源的电池充电-Boost
Abstract: A boost DC-DC controller built with the MAX1771 DC-DC controller makes a simple switch-mode current source that is useful for battery charging. The voltage control loop is disabled so that the current control loop provides regula...
2009-04-30 1316
One-Hour Battery Charger Has S
Because battery charges control power, they resemble regulators in some respects. Linear chargers, for example, are less efficient than switching types when operating at high current and a large VIN - VOUT difference. A linear charger, pow...
2009-04-30 1177
Comparing the I²C Bus to
Abstract: The I²C bus and the SMBus™ are popular 2-wire buses that are essentially compatible with each other. Normally devices, both masters and slaves, are freely interchangeable between both buses. Both buses feature addressa...
2009-04-30 737
利用太阳能与智能功率转换技术-Harnessing Sola
Abstract: Charge NiCd or NiMH batteries with solar cells. This circuit extracts the maximum power from a solar array to charge a battery stack. It employs the MAX856 boost converter and MAX982 dual comparator with reference. ...
2009-04-30 727
输入电流限制电池充电器移动计算应用-Input Curren
Additional Information: Quick View Data Sheet for the MAX1645/MAX1645A Quick View Data Sheet for the MAX1772 Technical Support: Power IntroductionWith the increasing demand for mobile ...
2009-04-30 1054
选择的电池充电系统的体系结构-Choices for Bat
The SMBus™ specification has done a great deal to standardize the interface between portable products, batteries, and chargers. SMBus was defined in 1995, and it has steadily gained in popularity. SMBus charger ICs are more complex t...
2009-04-30 374
Simple Circuit Charges Lead-Ac
Abstract: A flyback converter implements a current-limited power supply to charge lead-acid batteries. The MAX773 current-mode controller limits the output current and the flyback transformer provides isolation and flexibility for input vo...
2009-04-30 1324
便携式设备需要高性能的电池充电器-Portable Devi
Abstract: Three techniques are shown for charging lithium-ion (Li+) batteries. Linear, switch-mode, and pulse circuits are shown for each type. The proliferation of portable devices in recent years has underlined the need...
2009-04-30 1163
超低电阻表面贴装电流分流-Ultra-Low Resista
Abstract: Ultra-low resistance surface mount current-sense resistors seem like the ideal package. The physical design, a strap of metal, seems ideal, offering the lowest inductance possible. Too often these resistors need some kind of resi...
2009-04-30 530
单节锂离子充电座充电器线性AC适配器-Single-Cell
Abstract: The single cell Lithium-ion (Li-ion) battery charger that does not dissipate power (no heat) can also use a low cost linear AC adapter. This application note discusses how to design a simple and low-cost Li-ion charger. ...
2009-04-30 1335
如何最大限度地减少功耗锂离子线性充电器-How to Min
Abstract: Techniques are described for minimizing power dissipation in linear battery chargers. Beginning with a stable wall-cube switching power source, methods are described to limit the dissipation in the linear charging circuit. Circui...
2009-04-30 924
设计一个电源的便携式无线联络管理-Design Case S
Abstract: A portable wireless contact manager called Spotme was designed by the Swedish company Shockfish SA. Spotme was powered by a 4.2V Li+ rechargeable battery. However, the internal communicator circuitry requires four different volta...
2009-04-30 592
How to Design Battery Charger
Abstract: Notebook computers increasingly require complex battery charging algorithms and systems. This article provides information and background on lithium-ion (Li+), nickel-cadmium (NiCd), and nickel-metal-hydride (NiMH) batteries and ...
2009-04-30 4405
Switch-Mode, Linear, and Pulse
Abstract: There are three methods to charging Li+ batteries: switch-mode, linear and pulse. Each method has its advantages and disadvantages. Switch-mode charging minimizes power dissipation over a wide range of AC adapter voltages, but co...
2009-04-30 1662
正确的布局和元件选择控制电磁干扰
Proper Layout and Component Selection Controls EMI Abstract: Understanding the physics of voltage regulator topologies is important in designing power systems for EMI and EMC compliance. In particular, the physical princi...
2009-04-30 710
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