Contents
What happens when an IC is powered down?
Modern integrated circuits employ sophisticated circuits to ensure that they turn on in a known state, preserve memory, boot quickly, and conserve power when they are powered down. This two-part article provides tips for using power-on reset and power-down functions.
Which is the best way to drive a power supply IC?
The direct drive of power-supply IC is the most common and the simplest driving method. With this method, we should pay attention to several parameters and the influence of them. First, check the power-supply IC manual to learn the maximum peak drive current allowed, because different IC chips have different drive capability.
Which is the best strategy for multi voltage ICS?
Using multiple voltage domains is the most effective method of achieving the lowest possible power, but this strategy adds several new requirements to physical design flows. Success with multi-voltage requires careful planning at the architectural level and a robust methodology and toolset for all stages of the implementation.
How does a synchronous digital circuit work?
Synchronous digital circuits employ a system clock that must be sent to every active component (on or off the board) that needs to interpret the digital signal. Clock signals are constantly switching and have narrow band harmonics. They are often among the most energetic signals on a printed circuit board.
Why are battery power management ICs so important?
One reason for this growth has been the availability of batteries and power-management ICs that provide the required support for increasingly complex electronic systems. Fig. 9-1 shows the basic power-management subsystem employed in a battery-based system. To be effective, these power-management subsystems must:
How does a low impedance power management IC work?
Its low-impedance power path optimizes switch-mode operation efficiency, reduces battery charging time, and extends battery life during discharging phase. The IC supports 3.9 V to 6.2 V USB input sources, including a standard USB host port and USB charging port with 6.4 V overvoltage protection.
Which is Texas Instruments Battery power management IC?
Texas Instruments’ Bq24259 is a switch-mode battery-charge management and system power-path management IC for one-cell Li-ion and Li-polymer batteries. Li-ion batteries have a higher voltage per cell, tighter voltage tolerance, and the absence of trickle or float charge when reaching full charge.