SLYY231A March   2024  – March 2024 BQ25171-Q1 , BQ25622 , BQ25638 , LMQ66430-Q1 , LMR36502 , TPS37-Q1 , TPS62903-Q1 , TPSM365R15

 

  1.   1
  2.   Overview
  3.   At a glance
  4.   The importance of nano-IQ in different power applications
  5.   Achieving nano IQ in industrial BMS monitors
  6.   Achieving nano IQ in automotive BMS monitors
    1.     Achieving nano IQ in industrial home automation chargers
  7.   Achieving nano IQ in automotive BMS chargers
  8.   Achieving nano IQ in voltage supervisors
  9.   Achieving nano IQ in industrial and personal electronics DC/DC converters
  10.   Achieving nano IQ in automotive DC/DC converters
  11.   Conclusion
  12.   References
  13.   Additional resources
This paper highlights various design mechanisms to achieve nano-IQ (quiescent current) in different power applications along with its challenges.

When a chip is in standby mode, its power consumption is defined by its low quiescent current (IQ), which refers to a circuit’s quiet state when it isn’t driving any load. Low IQ extends the length of standby operations in battery-powered automotive and industrial components such as battery management system (BMS) monitors, BMS chargers, voltage supervisors and DC/DC converters. But these devices do need to consume a certain amount of IQ in standby mode in order to sustain high-priority functions and essential functional safety features, along with fast system wakeup to active mode.

Vishnu Ravinuthula

Design Director

Battery Management Solutions

Contributors:

Siddharth Sundar

Business Lead

Battery Monitor Products

Vladislav Merenkov

Product Marketing Manager

Boost Converters and Controllers

Alan Lee

Product Marketing Manager

Battery Charger Products

Vinod Menezes

Senior Technologist

Voltage References and Supervisors