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

TPS61221

ACTIVO

Convertidor elevador de entrada de 0.7 V y tensión de salida fija de 3.3 V, con corriente quiescente

Detalles del producto

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Boost Type Converter Vin (min) (V) 0.7 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 2000 Features Synchronous Rectification Vout (min) (V) 3.3 Vout (max) (V) 3.3 Iq (typ) (µA) 5 Duty cycle (max) (%) 90 Switch current limit (typ) (A) 0.4
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Boost Type Converter Vin (min) (V) 0.7 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 2000 Features Synchronous Rectification Vout (min) (V) 3.3 Vout (max) (V) 3.3 Iq (typ) (µA) 5 Duty cycle (max) (%) 90 Switch current limit (typ) (A) 0.4
SOT-SC70 (DCK) 6 4.2 mm² 2 x 2.1
  • Up to 95% Efficiency at Typical Operating
    Conditions
  • 5.5 µA Quiescent Current
  • Startup Into Load at 0.7 V Input Voltage
  • Operating Input Voltage from 0.7 V to 5.5 V
  • Pass-Through Function during Shutdown
  • Minimum Switching Current 200 mA
  • Protections:
    • Output Overvoltage
    • Overtemperature
    • Input Undervoltage Lockout
  • Adjustable Output Voltage from 1.8 V to 6 V
  • Fixed Output Voltage Versions
  • Small 6-pin SC-70 Package
  • Up to 95% Efficiency at Typical Operating
    Conditions
  • 5.5 µA Quiescent Current
  • Startup Into Load at 0.7 V Input Voltage
  • Operating Input Voltage from 0.7 V to 5.5 V
  • Pass-Through Function during Shutdown
  • Minimum Switching Current 200 mA
  • Protections:
    • Output Overvoltage
    • Overtemperature
    • Input Undervoltage Lockout
  • Adjustable Output Voltage from 1.8 V to 6 V
  • Fixed Output Voltage Versions
  • Small 6-pin SC-70 Package

The TPS6122x family devices provide a power-supply solution for products powered by either a single-cell, two-cell, or three-cell alkaline, NiCd or NiMH, or one-cell Li-Ion or Li-polymer battery. Possible output currents depend on the input-to-output voltage ratio. The boost converter is based on a hysteretic controller topology using synchronous rectification to obtain maximum efficiency at minimal quiescent currents. The output voltage of the adjustable version can be programmed by an external resistor divider, or is set internally to a fixed output voltage. The converter can be switched off by a featured enable pin. While being switched off, battery drain is minimized. The device is offered in a 6-pin SC-70 package (DCK) measuring 2 mm × 2 mm to enable small circuit layout size.

The TPS6122x family devices provide a power-supply solution for products powered by either a single-cell, two-cell, or three-cell alkaline, NiCd or NiMH, or one-cell Li-Ion or Li-polymer battery. Possible output currents depend on the input-to-output voltage ratio. The boost converter is based on a hysteretic controller topology using synchronous rectification to obtain maximum efficiency at minimal quiescent currents. The output voltage of the adjustable version can be programmed by an external resistor divider, or is set internally to a fixed output voltage. The converter can be switched off by a featured enable pin. While being switched off, battery drain is minimized. The device is offered in a 6-pin SC-70 package (DCK) measuring 2 mm × 2 mm to enable small circuit layout size.

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Documentación técnica

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Tipo Título Fecha
* Data sheet TPS6122x Low Input Voltage, 0.7V Boost Converter With 5.5μA Quiescent Current datasheet (Rev. B) PDF | HTML 11 nov 2014
Application note Basic Calculation of a Boost Converter's Power Stage (Rev. D) PDF | HTML 28 oct 2022
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11 dic 2018
Selection guide Power Management Guide 2018 (Rev. R) 25 jun 2018
Application note Extending the Soft Start Time Without a Soft Start Pin (Rev. B) 15 jun 2017
Application note Five Steps to a Good PCB Layout of the Boost Converter PDF | HTML 03 may 2016
Analog Design Journal Accurately measuring efficiency of ultralow-IQ devices 22 ene 2014
Application note Automated Frequency Response Analyzer 09 oct 2013
Analog Design Journal Design considerations for a resistive feedback divider in a DC/DC converter 26 abr 2012
White paper Power Management Solutions for Ultra-Low-Power 16-Bit MSP430 MCUs (Rev. D) 28 mar 2012
Analog Design Journal IQ: What it is, what it isn’t, and how to use it 17 jun 2011
Application note Stellaris DCDC Converter Reference Design 03 ago 2009
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

TPS61220EVM-319 — Módulo de evaluación TPS61220EVM-319

The TPS61220EVM-319 facilitates evaluation of the TPS61220 low input voltage boost converter.

Guía del usuario: PDF
Modelo de simulación

TPS61221 Unencrypted PSpice Transient Model Package (Rev. A)

SLVMAK2A.ZIP (79 KB) - PSpice Model
Diseños de referencia

TIDA-00599 — Diseño de referencia de LP5910 y TPS61221 como potencia para dispositivos que interactúan con MSP430

The MSP430X09X can operate form ultra-low voltages (ULV) in the range of 0.9V to 1.65V; however most of the devices in the system requires higher voltages. TIDA-00599 provides a solution for those companion devices that requires 1.8V and 3.3V input voltages.

A 3.3V voltage rail is generated from a (...)

Design guide: PDF
Esquema: PDF
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
SOT-SC70 (DCK) 6 Ultra Librarian

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

Soporte y capacitación

Foros de TI E2E™ con asistencia técnica de los ingenieros de TI

El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.

Si tiene preguntas sobre la calidad, el paquete o el pedido de productos de TI, consulte el soporte de TI. ​​​​​​​​​​​​​​

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