Chapter 238

A battery-powered laptop computer power supply

Brian Huffman


A battery-powered lap top computer power supply is described.


Flyback regulator

lap top power supply


Most battery-powered laptop computers require regulated multiple output potentials. Problems associated with such a supply include magnetic and snubber design, loop compensation, short-circuit protection, size and efficiency. Typical output power requirements include 5V @ 1A for memory and logic circuitry and ±12V @ 300mA to drive the analog components. Primary power may be either a 6V or 12V battery. The circuit in Figure 238.1 meets all these requirements. The LT1071 simplifies the power supply design by integrating most of the switching ...

Get Analog Circuit Design Volume Three now with the O’Reilly learning platform.

O’Reilly members experience live online training, plus books, videos, and digital content from nearly 200 publishers.