Power supply "core" trend, low power consumption

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Power supply "core" trend, low power consumption [Copy link]

Power management is critical to achieving further integration of electronic components in our daily work. For decades, TI has been committed to developing new process, packaging and circuit design advances to provide excellent power devices for your design.

Whether it’s increasing power density, extending battery life, reducing electromagnetic interference, maintaining power and signal integrity, or maintaining safety at high voltages, we’re here to help you solve key power management challenges.

This article will explain how to achieve low quiescent current (IQ) , thereby extending battery life and storage time without sacrificing system performance.

What is IQ?

Unless otherwise specified in the specification, all IQ definitions are: the current drawn by the IC in the no-load, non-switching, but active state. “No-load” means no current is being drawn from the IC. Typically, this is the current drawn through the SW pin on a buck converter, or through the VOUT pin on a boost converter. All IQ flows only through the IC internally to ground. “Non-switching” means no power switch in the IC is on (off). This includes the main switch or the control switch, and if both are integrated into the IC, the synchronous rectifier. In other words, the IC is in a high-impedance state with a power stage that is completely disconnected from the output (except for the integrated MOSFET body diode on some devices that cannot be turned off). “Active” means the IC is turned on via its EN pin and is not in UVLO or other shutdown state. IQ measures operating current, not shutdown current, so the device must be on. Finally, IQ is only meaningful in power-save mode, so if this mode is an option for a particular device, it must be active. If the device is operated in pulse-width modulation (PWM) mode, the power stage input current and switching losses significantly reduce the amount of current, IQ, required to operate the device.

TI Low IQ Technology

In battery-powered systems, achieving high efficiency at no-load or light-load conditions requires a power solution that tightly regulates the output while maintaining ultra-low supply current. With TI's ultra-low IQ technology and product portfolio, you can achieve low power consumption and maximize battery run time in your next design.

What are the key benefits of TI's low-IQ technology?

Low standby power consumption

Use ultra-low leakage components and new control topologies to extend battery run time.

Figure 1: Fast wake-up and low standby power consumption.

Fast response time

System functionality is enhanced with fast wake-up circuitry and adaptive biasing to improve dynamic response time while maintaining ultra-low static power consumption.

Figure 2: Compared with similar products,

TI products feature ultra-low IQ and excellent transient response.

Compact size

TI's patented circuit technology enables die and package sizes that support the application without compromising static power consumption.

Figure 3: Ultra-small package without sacrificing IQ.