TPS56121
- 4.5-V to 14-V Input Voltage Range
- Incorporates Power Block Technology
- Up to 15-A Output Current
- Fixed-Frequency Options of 300 kHz, 500 kHz,
and 1 MHz - High-Side and Low-Side MOSFET RDS(on) Sensing
- Programmable Soft-Start
- 600-mV Reference Voltage With 1% Accuracy
- Voltage Mode Control with Feed-Forward
- Supports Prebiased Output
- Thermal Shutdown
- 22-Pin 5-mm × 6-mm PQFN PowerPAD™ Package
- For SWIFT Power Products Documentation,
see http://www.ti.com/swift
The TPS56121 device is a high-efficiency and high-current synchronous buck converter designed to operate from a supply of 4.5 V to 14 V. The device can produce an output voltage as low as 0.6 V at loads up to 15 A. Integrated NexFET™ Power MOSFETs provide a small footprint and ease of use.
The device implements a voltage-mode control with voltage feed-forward compensation that responds instantly to input voltage change.
The TPS56121 is available in a thermally enhanced 22-pin PQFN (DQP) PowerPAD package.
The device offers design flexibility with a variety of user programmable functions, including soft-start, overcurrent protection (OCP) levels, and loop compensation. OCP levels are programmed by a single external resistor connected from the ILIM pin to the circuit ground. During the initial power-on sequence, the device enters a calibration cycle, measures the voltage at the ILIM 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 and then enters a shutdown/restart cycle until the fault is removed.
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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 | TPS56121 4.5-V to 14-V Input High-Current Synchronous Buck SWIFT™ Converter datasheet (Rev. D) | PDF | HTML | 2016/2/9 | ||
| 應用說明 | Semiconductor and IC Package Thermal Metrics (Rev. D) | PDF | HTML | 2024/3/25 | |||
| 類比設計期刊 | Control-Mode Quick Reference Guide (Rev. B) | PDF | HTML | 2023/8/29 | |||
| 類比設計期刊 | 使用第二級濾波器來減少電壓漣波 | PDF | HTML | Download English Version | PDF | HTML | 2023/5/3 | |
| 應用說明 | Calculating Efficiency (Rev. A) | 2020/3/6 | ||||
| 選擇指南 | SWIFT DC/DC Converters Selector Guide (Rev. G) | 2019/2/6 | ||||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 應用說明 | Analysis and Design of Input Filter for DC-DC Circuit | 2017/11/27 | ||||
| 應用說明 | An Efficient LDO-less Power Supply Solution for AFE76xx | 2017/11/13 | ||||
| 應用說明 | Demystifying Type II and Type III Compensators Using Op-Amp and OTA for DC/DC Co | 2014/7/11 | ||||
| 應用說明 | Understanding Thermal Dissipation and Design of a Heatsink | 2011/5/4 |
設計與開發
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PMP6776 is a low-cost non-isolated synchronous buck power supply. This design uses TPS56121 and TPS54620 Synchronous Buck Converters and TPS54425 and TPS54225 Step-Down Switchers to generate 7 outputs. Features include input voltage range 10.8V to 13.2V and outputs 1V at 6A, 1.5V at 4A, 1.8V at 6A, (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| LSON-CLIP (DQP) | 22 | 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。