如何最大限度地减少功耗锂离子线性充电器

摘要：为最大限度地减少功耗线性电池充电器技术。从一个稳定的开关电源墙立方体，方法描述线性充电电路的功耗限制。提供电路，计算表明，为PMOS旁路晶体管的热下沉进行了讨论，并建议合适的导通晶体管。

Maxim > App Notes > BATTERY MANAGEMENT POWER-SUPPLY CIRCUITS

Keywords: Lithium ion battery, Li+, battery charger, battery management, DC/DC, DC-DC converter, linear Feb 21, 2002
charger, controlling power dissipation

APPLICATION NOTE 967
How to Minimize Power Dissipation in Li+ Linear
Chargers

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. Circuits are provided, calculations are shown, heat sinking for the PMOS pass transistor is discussed,
and suitable pass transistors are suggested.


Introduction

Data sheets for single-cell Li+ linear chargers seldom discuss power dissipation or how to deal