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Product details

Parameters

Vin (Min) (V) 0.7 Vin (Max) (V) 5.5 Vout (Min) (V) 2.7 Vout (Max) (V) 5.4 Switch current limit (Typ) (A) 2 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 500 Switching frequency (Max) (kHz) 1000 Iq (Typ) (mA) 0.0001 Features Adjustable Current Limit, Bypass Mode, Enable, Light Load Efficiency, Synchronous Rectification, UVLO Fixed Duty cycle (Max) (%) 92 Operating temperature range (C) -40 to 85 Rating Catalog open-in-new Find other Boost converters (integrated switch)

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Features

  • Wide voltage range and current range
    • Input voltage range: 0.7 V to 5.5 V
    • 1.8-V minimum input voltage for start-up
    • Programmable boost output voltages, setting range: 2.7 V to 5.4 V
    • Programmable buck charging termination voltages, setting range: 1.7 V to 5.4 V
    • Programmable buck charging output currents, setting range: 2.5 mA to 600 mA
  • Ultralow quiescent current
    • 60 nA in boost mode or buck charging mode
    • 4 nA in forced bypass mode
  • High efficiency and power capability
    • Minimum 1.4 A inductor valley current limit
    • Two 60-mΩ (LS) / 140-mΩ (HS) MOSFETs
    • 100 mΩ bypass switch resistance
    • 1-MHz switching frequency
    • Auto snooze mode operation at light load
    • Up to 92.3% efficiency at VIN = 3 V, VOUT = 3.6 V, and IOUT =10 µA
    • Up to 96.3% efficiency at VIN = 3 V, VOUT = 3.6 V, and IOUT = 100 mA
  • Four operation modes controlled by the MODE and EN pins
  • Rich protection
    • Output short-circuit protection
    • Thermal shutdown protection
  • 2-mm x 3-mm 12-pin WSON package

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Description

The TPS61094 is a synchronous bi-directional buck/boost converter with bypass switch. The device provides a power supply solution for smart meter and super capacitors backup power applications.

The TPS61094 has wide input voltage range and output voltage up to 5.5 V. When the TPS61094 works in the buck mode and charges the supercap, the charging current and the termination voltage are programmable with two external resistors. When the TPS61094 works in the boost mode, the output voltage is programmable with an external resistor.

During the automatic buck or boost mode (EN = 1, MODE = 1), when the input power supply is applied, the device bypasses the input voltage to the output while it is capable of charging a backup supercap. When the input power supply is disconnected or lower than output target voltage, the TPS61094 enters boost mode and regulates output voltage from a backup supercap. The TPS61094 consumes 60-nA quiescent current at this mode.

The TPS61094 supports the true shutdown mode (EN = 0, MODE = 1) and the forced bypass mode (EN = 0, MODE = 0). In true shutdown mode, the TPS61094 completely disconnects the load from the input supply. When supporting the forced bypass mode, the TPS61094 connects the load to the input voltage directly through a bypass switch and only consumes 4-nA current to achieve long battery life.

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Technical documentation

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Type Title Date
* Data sheet TPS61094 60-nA Quiescent Current Bi-directional Buck/Boost Converter with Bypass Mode datasheet (Rev. A) Feb. 15, 2021
Application note The Long Lifetime Cost Competitive Solution in Smart Meter Based on TPS61094 Mar. 09, 2021
User guide TPS61094EVM-066 User's Guide Jan. 26, 2021
Certificate TPS61094EVM EU RoHS Declaration of Conformity (DoC) Dec. 03, 2020

Design & development

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Hardware development

EVALUATION BOARD Download
document-generic User guide
59
Description
The TPS61094 is a synchronous bi-directional buck/ boost converter with bypass switch between input and output. The device provides a power supply solution for E-meter and super capacitors backup power applications. The TPS61094 has wide input voltage range andoutput voltage up to 5.5 V. When the (...)
Features
  • Input voltage range: 0.7V to 5.5V
  • Output voltage range: 1.8V to 5.5V
  • Valley current limit: 1.4A min
  • 2-mm x 3-mm WSON package

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  • Supports simultaneous analysis of multiple products
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