TI TLV62130A 评估参考设计方案
TI公司的TLV62130A是一款优化的高功率密度同步降压DC-DC转换器，采用DCS- Control™拓扑及2.5MHz高频转换开关实现小电感器及快速瞬态响应。电压输入范围为4V-17V，覆盖锂电池及其12V蓄电池的范围，可以实现0.9V至5V输出电压及3A连续电流输出。在节电模式功耗为19uA,关闭模式功耗为2uA。本文首先介绍芯片的简介、特性、内部框图及应用领域，并给出相应设计方案的设计原理图、元器件列表及制板图。
The TLV62130 is an easy to use synchronous step down DC-DC converter optimized for applications with high power density. A high switching frequency of typically 2.5MHz allows the use of small inductors and provides fast transient response as well as high output voltage accuracy by utilization of the DCS-Control™ topology.
With its wide operating input voltage range of 4V to 17V, the devices are ideally suited for systems powered from either a Li-Ion or other batteries as well as from 12V intermediate power rails. It supports up to 3A continuous output current at output voltages between 0.9V and 5V (with 100% duty cycle mode).
The output voltage startup ramp is controlled by the soft-start pin, which allows operation as either a standalone power supply or in tracking configurations. Power sequencing is also possible by configuring the Enable and open-drain Power Good pins.
..
