中文摘要：

为提高阀控密封铅酸（VRLA）蓄电池的充电效率和长期运行的可靠性与安全性，设计了一种智能型阀控密封铅酸蓄电池充电控制芯片，该芯片可控制充电电路实现4种不同模式的充电过程，在微处理器的支持下针对不同应用场合的需要进行编程，交替使用4种模式对蓄电池进行充电，使充电效率及电池组的可靠性与安全性达到最佳化；此外该芯片内部设置了电源的欠压锁定、低电压的监测以及过流保护功能，该芯片已在1．5μm50V双极型一互补金属氧化半导体一双扩散金属氧化半导体（BCD）工艺下设计完成．测试结果表明，芯片工作正常，预期的全部充电控制功能均已实现．

英文摘要：

An intelligent switch-mode charger controller IC （integrated circuit） was proposed to enhance the charging efficiency of VRLA （valve regulated lead-acid） battery and improve its long term reliability and save its life. Controlled by the IC, VRLA charging circuitry could provide four different charging modes. Cooperated with MCU, the programmable charging procedure could be implemented, which constituted by four modes in certain sequences according to different applications, to optimize the charging efficiency and results as well as to provide different protections for system and batteries. In addition, under-voltage detection, low voltage monitoring and over current protection were also available. The chip was designed and fabricated by 1. 5μm 50 V bipolar-CMOS-DMOS （BCD） technology. Test results showed that the chip works normally and all functions in each charging state were successfully realized.