Design And Implementation Of Intelligent Multi-chemistry Charge Management Ic

The paper is based on the project "Theoretical research and design of key techniques for mixed signal IC". Through systematic design, circuit design, layout design and performance simulation, a programmable multi-chemistry intelligent charge management IC, named XD2006, is introduced in this paper.XD2006 is a mixed signal IC with novel design and strong functions. It can detect the external battery and adopt different charge modes based on the different sorts of batteries. It can set fast-charge time through external programming. In order to avoid the damage to over-discharged batteries, XD2006 inhibits fast charge until the battery voltage within the defined limits. In order to eliminate undesirable undercharged or overcharged conditions and allow accurate and safe fast charge management, XD2006 can proceed with optimal charging and termination algorithms.The paper takes into account the design for testability. With the multiple uses of the package pins, and skillful design of the circuit blocks, the testability of the chip is realized only at the cost of adding a test circuit which is very small in scale.Also, this paper analyses and studies the layout design of XD2006 and annotates the key factors that should be considered in the layout design. Layout of digital circuits is realized with method of auto plane and route. At last, the layout of XD2006 is schemed out based on 0.5μm CMOS process, and it passes the DRC and LVS verification. Then the post simulation of LPE netlists is carried out. The design project has passed the acceptance check and taped out. Now the chip is being tested.