홈 전원 관리 AC/DC & DC/DC converters (integrated FET)
홈
전원 관리
AC/DC & DC/DC converters (integrated FET)

TPS61291

활성

저 IQ 부스트 컨버터(15nA 바이패스 작동 지원)

지금 주문
데이터시트

TPS61291

활성
데이터시트 지금 주문

제품 상세 정보

Vin (min) (V) 0.9 Vin (max) (V) 5 Topology Boost Type Converter Switching frequency (min) (kHz) 2300 Switching frequency (max) (kHz) 2300 Features Bypass Mode Pass-through Mode, Synchronous Rectification Vout (min) (V) 2.5 Vout (max) (V) 3.3 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000005
Vin (min) (V) 0.9 Vin (max) (V) 5 Topology Boost Type Converter Switching frequency (min) (kHz) 2300 Switching frequency (max) (kHz) 2300 Features Bypass Mode Pass-through Mode, Synchronous Rectification Vout (min) (V) 2.5 Vout (max) (V) 3.3 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000005
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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관심 가지실만한 유사 제품

open-in-new 대안 비교
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
TPS61094 활성 바이패스 모드를 지원하는 60nA 정동작 전류 양방향 벅/부스트 컨버터 60-nA quiescent current bi-directional buck/boost converter with bypass mode
신규 TPS61299 활성 입력 전류 제한 및 빠른 과도 성능을 지원하는 95nA 낮은 IQ 5.5V 부스트 컨버터 Lower IQ, true disconnect and higher IOUT
비교 대상 장치와 유사한 기능
TPS610981 활성 저입력 전압, 3.3V 출력 전압, 동기 부스트 컨버터(LDO 통합) For applications requiring ultra-low Iq or smaller package.
TPS61220 활성 5.5μA 정동작 전류를 지원하는 0.7V 입력, 조정 가능 출력 전압 부스트 컨버터 For applications requiring ultra-low Iq or smaller package.

기술 문서

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모두 보기11
유형 직함 날짜
* Data sheet TPS61291 Low Iq Boost Converter with Bypass Operation datasheet (Rev. A) PDF | HTML 2014/09/23
Application note QFN and SON PCB Attachment (Rev. C) PDF | HTML 2023/12/06
Application note 스트컨버터의 전력계 기본 계산 (Rev. D) PDF | HTML 2022/11/21
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 2018/12/11
Application note Extending the Soft Start Time Without a Soft Start Pin (Rev. B) 2017/06/15
Application note Calculating and Measuring the No Load Input Current of the Boost Converter 2016/09/23
Technical article How to use boost converters in wireless sensor nodes PDF | HTML 2015/10/06
EVM User's guide TPS61291EVM-569 Evaluation Module 2014/09/17
Analog Design Journal Accurately measuring efficiency of ultralow-IQ devices 2014/01/22
Analog Design Journal IQ: What it is, what it isn’t, and how to use it 2011/06/17
Application note Minimizing Ringing at the Switch Node of a Boost Converter 2006/09/15

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

평가 보드

TPS61291EVM-569 — 바이패스 모드를 지원하는 저 IQ 부스트 컨버터 평가 모듈

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 (...)

사용 설명서: PDF
TI.com에서 구매할 수 없습니다
시뮬레이션 모델

Unencrypted TPS61291 PSpice Transient Model Package (Rev. A)

SLVMAD5A.ZIP (22 KB) - PSpice Model
다운로드
거버(Gerber) 파일

TPS61291EVM-569 Gerbers

SLVC574.ZIP (176 KB)
다운로드
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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 (...)
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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 (...)
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회로도: PDF
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This reference design demonstrates how to create an industrial sensor-to-cloud end node capable of connecting to an IoT network gateway and a cloud data provider. This sensor node reference design uses Texas Instruments' nano-power system timer for power gating, low Iq boost converter, (...)
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회로도: PDF
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Smart Wireless Sensors are typically powered by Long-Life Batteries Like LiSoCl2 chemistry which are limited in current. However, these sensors require high current pulses for transmitting the gathered data wirelessly. This Reference Design provides a solution for powering the MCU with reduced (...)
Test report: PDF
회로도: PDF
패키지 핀 다운로드
WSON (DRV) 6 옵션 보기
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주문 및 품질

포함된 정보:
  • RoHS
  • REACH
  • 디바이스 마킹
  • 납 마감/볼 재질
  • MSL 등급/피크 리플로우
  • MTBF/FIT 예측
  • 물질 성분
  • 인증 요약
  • 지속적인 신뢰성 모니터링
포함된 정보:
  • 팹 위치
  • 조립 위치

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