3 V至20 V输入同步降压控制器 3-V TO 20-V INPUT SYNCHRONOUS BUCK CONTROLLER
The TPS40304A is a cost-optimized synchronous buck controller that operates from 3-V to 20-V input. The controller implements a voltage-mode control architecture with input-voltage feed-forward compensation that responds instantly to input voltage change. The switching frequency is fixed at 600 kHz.
Frequency Spread Spectrum feature adds dither to the switching frequency, significantly reducing the peak EMI noise and making it much easier to comply with EMI standards.
The TPS40304A offers design with a variety of user programmable functions, including soft-start, overcurrent protection OCP levels, and loop compensation.
The OCP level is programmed by a single external resistor connected from LDRV pin to circuit ground. During initial power on, the TPS40304A enters a calibration cycle, measures the voltage at the LDRV pin, and sets an internal OCP voltage level. During operation, the programmed OCP voltage level is compared to the voltage drop across the low-side FET when it is on to determine whether there is an overcurrent condition. The TPS40304A then enters a shutdown and restart cycle until the fault is removed.
输出接口数 1
输出电压 6.5 V
输出电流 25 A
耗散功率 2610 mW
静态电流 2.50 mA
调节输出数 1
上升时间 15 ns
开关频率 600 kHz
过温保护 Yes
拓扑结构 Buck
占空比 90 %
输入电压Max 20 V
输入电压Min 3 V
输出电流Max 25 A
最大占空比 0.9
下降时间 12 ns
工作温度Max 125 ℃
工作温度Min -40 ℃
耗散功率Max 2610 mW
电源电压 3V ~ 20V
输入电压 3V ~ 20V
引脚数 10
封装 VFDFN-10
封装 VFDFN-10
工作温度 -40℃ ~ 125℃
产品生命周期 Active
包装方式 Tape & Reel TR
RoHS标准 RoHS Compliant
含铅标准 Lead Free
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
TPS40304ADRCT TI 德州仪器 | 当前型号 | 当前型号 |
TPS40304ADRCR 德州仪器 | 完全替代 | TPS40304ADRCT和TPS40304ADRCR的区别 |