TPS61092
- Synchronous (96% Efficient) Boost Converter
With 500-mA Output Current From 1.8-V Input - Available in a 16-Pin VQFN 4 × 4 Package
- Device Quiescent Current: 20 µA (Typ)
- Input Voltage Range: 1.8 V to 5.5 V
- Adjustable Output Voltage Up to 5.5 V Fixed Output
Voltage Options - Power Save Mode for Improved Efficiency at Low
Output Power - Low Battery Comparator
- Low EMI-Converter (Integrated Antiringing Switch)
- Load Disconnect During Shutdown
- Over-Temperature Protection
The TPS6109x devices provide a power supply solution for products powered by either a one-cell Li-Ion or Li-Polymer, or a two-cell alkaline, NiCd or NiMH battery and required supply currents up to or higher than 1 A. The converter generates a stable output voltage that is either adjusted by an external resistor divider or fixed internally on the chip. It provides high efficient power conversion and is capable of delivering output currents up to 0.5 A at 5 V at a supply voltage down to 1.8 V. The implemented boost converter is based on a fixed frequency, pulse-width- modulation (PWM) controller using a synchronous rectifier to obtain maximum efficiency. Boost switch and rectifier switch are connected internally to provide the lowest leakage inductance and best EMI behavior possible. The maximum peak current in the boost switch is limited to a value of 2500 mA.
The converter can be disabled to minimize battery drain. During shutdown, the load is completely disconnected from the battery. A low-EMI mode is implemented to reduce ringing and, in effect, lower radiated electromagnetic energy when the converter enters the discontinuous conduction mode.
The output voltage can be programmed by an external resistor divider or is fixed internally on the chip.
The device is packaged in a 16-pin VQFN 4-mm × 4-mm (16 RSA) package.
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 | TPS6109x Synchronous Boost Converter With 2-A Switch datasheet (Rev. C) | PDF | HTML | 2014/12/24 | ||
| 應用說明 | QFN and SON PCB Attachment (Rev. C) | PDF | HTML | 2023/12/6 | |||
| 應用說明 | Basic Calculation of a Boost Converter's Power Stage (Rev. D) | PDF | HTML | 2022/10/28 | |||
| 應用說明 | Performing Accurate PFM Mode Efficiency Measurements (Rev. A) | 2018/12/11 | ||||
| 選擇指南 | Power Management Guide 2018 (Rev. R) | 2018/6/25 | ||||
| 應用說明 | Optimizing Transient Response of Internally Compensated DC-DC Converters (Rev. B) | 2017/11/29 | ||||
| 應用說明 | Extending the Soft Start Time Without a Soft Start Pin (Rev. B) | 2017/6/15 | ||||
| 應用說明 | Five Steps to a Good PCB Layout of the Boost Converter | PDF | HTML | 2016/5/3 | |||
| 應用說明 | Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs | 2011/9/19 | ||||
| 類比設計期刊 | IQ: What it is, what it isn’t, and how to use it | 2011/6/17 | ||||
| 應用說明 | Minimizing Ringing at the Switch Node of a Boost Converter | 2006/9/15 |
設計與開發
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The TPS61090EVM-029 is an evaluation tool for the TPS61090 inductive step-up converter in QFN-16 package which can supply voltages up to 5.5V from a 1.8-V to 5.5-V input. The TPS61090EVM-029 uses a TPS61090 adjustable output step-up converter and the appropriate external components to provide a 5-V (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN (RSA) | 16 | Ultra Librarian |