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AC/DC 和 DC/DC 轉換器 (整合式 FET)

TPS61291

現行

具 15nA 旁路運作的低 Iq 升壓轉換器

立即訂購
產品規格表

TPS61291

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Boost Switch current limit (typ) (A) 1 Vin (max) (V) 5 Vin (min) (V) 0.9 Vout (max) (V) 3.3 Vout (min) (V) 2.5 Features Pass-through mode, Synchronous rectification Switching frequency (min) (kHz) 2300 Switching frequency (max) (kHz) 2300 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 5 Duty cycle (max) (%) 90 Type Converter
Rating Catalog Topology Boost Switch current limit (typ) (A) 1 Vin (max) (V) 5 Vin (min) (V) 0.9 Vout (max) (V) 3.3 Vout (min) (V) 2.5 Features Pass-through mode, Synchronous rectification Switching frequency (min) (kHz) 2300 Switching frequency (max) (kHz) 2300 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 5 Duty cycle (max) (%) 90 Type Converter
WSON (DRV) 6 4 mm² 2 x 2
  • Input Voltage Range 0.9V to 5V
  • Startup Voltage 1.5V at 20mA Load
  • Pin Selectable Output Voltages:
    3.3V, 3V, 2.5V
  • 15nA typical Quiescent Current in
    Bypass Mode
  • 5.7µA typical Quiescent Current in
    Boost Mode
  • Bypass Switch from VIN to VOUT
  • IOUT > 200mA at 3.3V VOUT,
    VIN = 1.8V
  • Internal Feedback Divider Disconnect
    (Bypass Mode)
  • Controlled Bypass Transition Prevents
    Reverse Current into Battery
  • Power-Save Mode at Light Loads
  • Overtemperature Protection
  • Redundant Overvoltage Protection
  • Small 2mm × 2mm SON 6-pin package
  • Input Voltage Range 0.9V to 5V
  • Startup Voltage 1.5V at 20mA Load
  • Pin Selectable Output Voltages:
    3.3V, 3V, 2.5V
  • 15nA typical Quiescent Current in
    Bypass Mode
  • 5.7µA typical Quiescent Current in
    Boost Mode
  • Bypass Switch from VIN to VOUT
  • IOUT > 200mA at 3.3V VOUT,
    VIN = 1.8V
  • Internal Feedback Divider Disconnect
    (Bypass Mode)
  • Controlled Bypass Transition Prevents
    Reverse Current into Battery
  • Power-Save Mode at Light Loads
  • Overtemperature Protection
  • Redundant Overvoltage Protection
  • Small 2mm × 2mm SON 6-pin package

The TPS61291 is a boost converter with pin selectable output voltages and an integrated bypass mode. In bypass operation, the device provides a direct path from the input to the system and allows a low power micro controller (MCU) such as the MSP430 to operate directly from a single 3V Li-MnO2 battery or dual alkaline battery cells.

In bypass mode the integrated feedback divider network for boost mode operation is disconnected from the output and the quiescent current consumption drops down to only 15nA (typical).

In boost mode the device provides a minimum output current of 200mA at 3.3V VOUT from 1.8V VIN. The boost mode is used for system components which require a regulated supply voltage and cannot directly operate from the input source. The boost converter is based on a current-mode controller using synchronous rectification to obtain maximum efficiency and consumes typically 5.7µA from the output. During startup of the boost converter, the VSEL pin is read out and the integrated feedback network sets the output voltage to 2.5V, 3V or 3.3V.

Bypass mode or boost mode operation is controlled by the system via the EN/BYP pin.

The device integrates an enhanced bypass mode control to prevent charge, stored in the output capacitor during boost mode operation, from flowing back to the input and charging the battery.

The device is packaged in a small 6-pin SON package (DRV) measuring 2.0mm × 2.0mm × 0.75mm.

The TPS61291 is a boost converter with pin selectable output voltages and an integrated bypass mode. In bypass operation, the device provides a direct path from the input to the system and allows a low power micro controller (MCU) such as the MSP430 to operate directly from a single 3V Li-MnO2 battery or dual alkaline battery cells.

In bypass mode the integrated feedback divider network for boost mode operation is disconnected from the output and the quiescent current consumption drops down to only 15nA (typical).

In boost mode the device provides a minimum output current of 200mA at 3.3V VOUT from 1.8V VIN. The boost mode is used for system components which require a regulated supply voltage and cannot directly operate from the input source. The boost converter is based on a current-mode controller using synchronous rectification to obtain maximum efficiency and consumes typically 5.7µA from the output. During startup of the boost converter, the VSEL pin is read out and the integrated feedback network sets the output voltage to 2.5V, 3V or 3.3V.

Bypass mode or boost mode operation is controlled by the system via the EN/BYP pin.

The device integrates an enhanced bypass mode control to prevent charge, stored in the output capacitor during boost mode operation, from flowing back to the input and charging the battery.

The device is packaged in a small 6-pin SON package (DRV) measuring 2.0mm × 2.0mm × 0.75mm.
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技術文件

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類型 標題 日期
* Data sheet TPS61291 Low Iq Boost Converter with Bypass Operation datasheet (Rev. A) PDF | HTML 2014年 9月 23日
Application note QFN and SON PCB Attachment (Rev. C) PDF | HTML 2023年 12月 6日
Application note Basic Calculation of a Boost Converter's Power Stage (Rev. D) PDF | HTML 2022年 10月 28日
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 2018年 12月 11日
Application note Extending the Soft Start Time Without a Soft Start Pin (Rev. B) 2017年 6月 15日
Application note Calculating and Measuring the No Load Input Current of the Boost Converter 2016年 9月 23日
Technical article How to use boost converters in wireless sensor nodes PDF | HTML 2015年 10月 6日
Analog Design Journal Accurately measuring efficiency of ultralow-IQ devices 2014年 1月 22日
Analog Design Journal IQ: What it is, what it isn’t, and how to use it 2011年 6月 17日
Application note Minimizing Ringing at the Switch Node of a Boost Converter 2006年 9月 15日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

TPS61291EVM-569 — 具有旁路模式的低 IQ 升壓轉換器評估模組

The TPS61291EVM-569 facilitates the evaluation of the TPS61291 Low IQ Boost Converter with Bypass Mode device.  The device outputs a user-selectable output voltage of 2.5V, 3V, or 3.3V.  Available output current depends on the input voltage and output voltage but is generally around 200 (...)

使用指南: PDF
TI.com 無法提供
模擬型號

Unencrypted TPS61291 PSpice Transient Model Package (Rev. A)

SLVMAD5A.ZIP (22 KB) - PSpice Model
下載
Gerber 檔案

TPS61291EVM-569 Gerbers

SLVC574.ZIP (176 KB)
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參考設計

TIDM-ULTRASONIC-FLOW-TDC — 使用時間轉數位轉換器進行超音波水錶設計

The TIDM-ULTRASONIC-FLOW-TDC is a reference design for an ultrasonic flow meter (water, gas or heat meter) with LCD built using a Time-to-Digital converter and an ultra-low power MCU. Solution includes optimized leakage detection, low power consumption, and a small form factor that are (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00484 — 可讓鈕釦電池壽命長達 10 年以上且適用於 Sub-1GHz 星狀網路的濕度及溫度感測器節點

This reference design uses our nano-power system timer, boost converter, SimpleLink™ ultra-low power Sub-1 GHz wireless microcontroller (MCU) platform and humidity sensing technologies to demonstrate an ultra-low power method to duty-cycle sensor end nodes leading to extremely long (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-01469 — 採用無線震動感測器並支援預防性維護的馬達監控參考設計

此參考設計為一低功耗無線子系統解決方案，可利用震動感測監控馬達，以判斷是否需進行預防性維護。振動資料的 FFT 可透過 Bluetooth 低功耗或 sub-1GHz 無線通訊協定傳送至其他裝置。此子系統解決方案的低功率和無線功能使其能夠在單顆鈕扣電池上運作，進而使裝置體積小巧，價格低廉，並置於難以觸及的位置。這使此參考設計成為可避免昂貴預防性維護，以及需要有線連接之更大、更昂貴監視器的理想替代方案。
Design guide: PDF
電路圖: PDF
參考設計

TIDA-01477 — 啟用 Sub-1 GHz 與感測器至雲端網路的濕度及溫度感測器節點參考設計

此參考設計展示如何建立一個工業感測器至雲端的終端節點，能夠連接至 IoT 網路閘道和雲端資料供應商。此感測器節點參考設計採用德州儀器的毫微功率系統計時器進行電源閘控、低 IQ 升壓轉換器、SimpleLink™ 超低功耗 Sub-1 GHz 無線微控制器 (MCU) 平台與濕度感測技術，展示一種工作週期感測器終端節點的超低功耗方法，進而延長電池使用壽命。
Design guide: PDF
電路圖: PDF
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WSON (DRV) 6 Ultra Librarian
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