TPS40305
- Input Voltage Range From 3 V to 20 V
- 300-kHz (TPS40303), 600-kHz (TPS40304), and 1.2-MHz (TPS40305) Switching Frequencies
- High- and Low-Side FET RDS(on) Current Sensing
- Programmable Thermally Compensated OCP Levels
- Programmable Soft Start
- 600-mV, 1% Reference Voltage
- Voltage Feed-Forward Compensation
- Supports Prebiased Output
- Frequency Spread Spectrum
- Thermal Shutdown Protection at 145°C
- 10-Pin 3-mm × 3-mm VSON Package With Ground Connection to Thermal Pad
- Create a Custom Design Using the TPS4030x With the WEBENCH® Power Designer
The TPS4030x is a family of cost-optimized synchronous buck controllers that operate 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 a change in input voltage. The switching frequency is fixed at 300 kHz, 600 kHz, or 1.2 MHz.
The frequency spread-spectrum (FSS) feature adds to the switching frequency, significantly reducing the peak EMI noise and making it much easier to comply with EMI standards.
The TPS4030x offers design with a variety of user-programmable functions, including soft start, overcurrent protection (OCP) levels, and loop compensation.
OCP level may be programmed by a single external resistor connected from the LDRV pin to circuit ground. During initial power on, the TPS4030x 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 TPS4030x then enters a shutdown and restart cycle until the fault is removed.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | TPS4030x 3-V to 20-V Input, Voltage Mode, Synchronous Buck Controller datasheet (Rev. D) | PDF | HTML | 2018/3/12 | ||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 選擇指南 | DC/DC Buck Controller Solutions Selection Guide | 2018/2/6 | ||||
| 應用說明 | SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC | 2016/2/22 |
設計與開發
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The TPS40305EVM-488 evaluation module (EVM) is a synchronous buck converter providing a fixed 1.8-V output at up to 10A from a 12-V input bus. The EVM is designed to start-up from a single supply; so, no additional bias voltage is required for start-up. The module uses the TPS40305 high (...)
SLUC263 — Type III Compensation Calculation Tool
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VSON (DRC) | 10 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。