Inicio Gestión de la energía Convertidores de CA/CC y CC/CC (FET integrado)
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Gestión de la energía
Convertidores de CA/CC y CC/CC (FET integrado)

TPS61021A

ACTIVO

Convertidor elevador de 3 A con tensión de entrada ultrabaja de 0.5 V

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TPS61021A

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Detalles del producto

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Boost Type Converter Vin (min) (V) 0.5 Vin (max) (V) 4.4 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 2000 Features Bypass Mode Pass-through Mode, Enable, Light Load Efficiency, Load Disconnect, Synchronous Rectification Vout (min) (V) 1.8 Vout (max) (V) 4 Iq (typ) (µA) 17 Duty cycle (max) (%) 90 Switch current limit (typ) (A) 4.3
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Boost Type Converter Vin (min) (V) 0.5 Vin (max) (V) 4.4 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 2000 Features Bypass Mode Pass-through Mode, Enable, Light Load Efficiency, Load Disconnect, Synchronous Rectification Vout (min) (V) 1.8 Vout (max) (V) 4 Iq (typ) (µA) 17 Duty cycle (max) (%) 90 Switch current limit (typ) (A) 4.3
WSON (DSG) 8 4 mm² 2 x 2
  • Input Voltage Range: 0.5 V to 4.4 V
  • 0.9 V Minimum Input Voltage for Startup
  • Output Voltage Setting Range: 1.8 V to 4.0 V
  • 91% Efficiency at VIN = 2.4 V, VOUT = 3.3 V and
    IOUT = 1.5 A
  • 2.0-MHz Switching Frequency
  • IOUT > 1.5 A at VOUT = 3.3 V when VIN > 1.8 V
  • 17-µA Typical Quiescent Current
  • ±2.5% Reference Voltage Accuracy over –40°C to
    125°C
  • PFM Operation Mode at Light Load
  • True Disconnection Between Input and Output
    During Shutdown
  • Output Over Voltage Protection
  • Output Short Circuit Protection
  • Thermal Shutdown Protection
  • 2-mm × 2-mm WSON Package
  • Input Voltage Range: 0.5 V to 4.4 V
  • 0.9 V Minimum Input Voltage for Startup
  • Output Voltage Setting Range: 1.8 V to 4.0 V
  • 91% Efficiency at VIN = 2.4 V, VOUT = 3.3 V and
    IOUT = 1.5 A
  • 2.0-MHz Switching Frequency
  • IOUT > 1.5 A at VOUT = 3.3 V when VIN > 1.8 V
  • 17-µA Typical Quiescent Current
  • ±2.5% Reference Voltage Accuracy over –40°C to
    125°C
  • PFM Operation Mode at Light Load
  • True Disconnection Between Input and Output
    During Shutdown
  • Output Over Voltage Protection
  • Output Short Circuit Protection
  • Thermal Shutdown Protection
  • 2-mm × 2-mm WSON Package

The TPS61021A provides a power supply solution for portable or smart devices powered by alkaline, NiMH, Li-Mn, or Li-ion batteries. The TPS61021A is capable of outputting 3.3-V voltage and 1.5-A current from a battery discharged to as low as 1.8 V. Capable of operating with 0.5-V input voltage enables the TPS61021A to extend the battery run time.

The TPS61021A operates at 2-MHz switching frequency at heavy load and enters power-save mode at light load to maintain high efficiency over the entire load current range. The device only consumes a 17-µA quiescent current from VOUT in light load condition. During shutdown, the load is completely disconnected from the input. In addition, The TPS61021A provides 4.35-V output overvoltage protection, output short circuit protection, and thermal shutdown protection.

The TPS61021A offers a very small solution size due to low count of external components. It allows the use of small inductors and output capacitors with the 2-MHz switching frequency.

The TPS61021A is available in 2.0-mm × 2.0-mm WSON package.

The TPS61021A provides a power supply solution for portable or smart devices powered by alkaline, NiMH, Li-Mn, or Li-ion batteries. The TPS61021A is capable of outputting 3.3-V voltage and 1.5-A current from a battery discharged to as low as 1.8 V. Capable of operating with 0.5-V input voltage enables the TPS61021A to extend the battery run time.

The TPS61021A operates at 2-MHz switching frequency at heavy load and enters power-save mode at light load to maintain high efficiency over the entire load current range. The device only consumes a 17-µA quiescent current from VOUT in light load condition. During shutdown, the load is completely disconnected from the input. In addition, The TPS61021A provides 4.35-V output overvoltage protection, output short circuit protection, and thermal shutdown protection.

The TPS61021A offers a very small solution size due to low count of external components. It allows the use of small inductors and output capacitors with the 2-MHz switching frequency.

The TPS61021A is available in 2.0-mm × 2.0-mm WSON package.
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Documentación técnica

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Tipo Título Fecha
* Data sheet TPS61021A 3-A Boost Converter with 0.5-V Ultra Low Input Voltage datasheet PDF | HTML 01 jun 2016
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 30 abr 2024
Application note QFN and SON PCB Attachment (Rev. C) PDF | HTML 06 dic 2023
Application note Basic Calculation of a Boost Converter's Power Stage (Rev. D) PDF | HTML 28 oct 2022
Application note Measuring and Understanding the Output Voltage Ripple of a Boost Converter PDF | HTML 22 feb 2021
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11 dic 2018
Technical article How energy harvesting can extend the life of your fault indicator on the grid PDF | HTML 18 oct 2017
Application note Single LED Driver in AA Battery-Powered Systems 25 ago 2017
Application note Feedforward Capacitor Makes Boost Converter Fast and Stable 02 nov 2016
User guide TPS61021A-PWR723 Evaluation Module (Rev. A) 16 jun 2016
Analog Design Journal Design considerations for a resistive feedback divider in a DC/DC converter 26 abr 2012
Application note Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs 19 sep 2011
Analog Design Journal IQ: What it is, what it isn’t, and how to use it 17 jun 2011
Application note Minimizing Ringing at the Switch Node of a Boost Converter 15 sep 2006

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

TPS61021EVM-723 — Módulo de evaluación de convertidor elevador para TPS61021A

The TPS61021A provides a power supply solution for portable devices and IoT devices powered by alkaline battery or LiMn battery. The TPS61021A supports up to 1.5A load current from a battery discharged as low as 1.8V. The TPS61021A operates at a regulated 2.0-MHz switching frequency and enters (...)
Guía del usuario: PDF
No disponible en TI.com
Modelo de simulación

TPS61021A Unencrypted PSpice Transient Model Package (Rev. B)

SLVMBI5B.ZIP (97 KB) - PSpice Model
Descargar
Diseños de referencia

TIDA-00998 — Diseño de referencia del subsistema del indicador de falla y recolección de energía para los indicad

This reference design shows multiple architectures for extending primary battery life using a secondary battery or supercapacitor with energy harvested from a current transformer (CT) or solar cells. Optimal power management is done using efficient LED drivers to drive series or parallel (...)
Design guide: PDF
Esquema: PDF
Diseños de referencia

TIDA-01385 — Diseño de referencia de captación de energía del transformador de corriente con supercondensador par

Power management for the energy harvesting, energy buffering and back-up power is a key challenge in the fault indicator design. The TIDA-01385 introduces a circuit about harvesting energy from a current transformer for the system load of a fault indicator while storing the extra energy in a super (...)
Design guide: PDF
Esquema: PDF
Diseños de referencia

TIDA-01574 — Diseño de referencia de etapa de potencia para termostato de dirección de potencia

TIDA-01574 is a reference design for high-efficiency power stealing for smart thermostats and other building automation equipment. In general, power stealing enables to extend battery life of Wi-Fi enabled smart thermostats by drawing power from 24-V AC when the HVAC load is off. This (...)
Design guide: PDF
Esquema: PDF
Diseños de referencia

PMP15037 — Diseño de referencia de controlador de LED individual de alto brillo para aplicaciones de pilas AA d

This reference design delivers a high efficiency LED driver circuit with dimming function using the boost converter TPS61021A. The PWM dimming method can be used in one or two cell AA battery input applications, and the analog dimming method can be used in one cell AA battery input applications. (...)
Test report: PDF
Esquema: PDF
Diseños de referencia

PMP21055 — Diseño de referencia Boost+Buck de 0,8 V a 4,2 Vin a 3,3 V a 100 mA

The PMP21055 reference design converts a 0.8V to 4.2V input to a 3.3V/100mA output in a small form factor measuring 12mmx8mm. The design is built on a 2 layer, 1oz board and is a low-cost, small size design intended for battery powered applications. 
Test report: PDF
Esquema: PDF
Diseños de referencia

TIDA-01387 — Diseño de referencia de la fuente de alimentación para módems GPRS con baterías LiSoCL2

This design demonstrates how to power GPRS modems in smart meters using LiSoCL2 batteries. GPRS modems require peak current of up to 2A during transmission. This design reduces the peak load requirements on the battery by using the TPS61021A boost converter and a 20F super capacitor to provide the (...)
Design guide: PDF
Esquema: PDF
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WSON (DSG) 8 Ultra Librarian
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Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

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