Managing multiple power domains at system level

Dialog Semiconductor has launched a new, core building block for power management sub-systems in portable electronics equipment, audio players, mobile handsets and digital cameras. The DA9025 power management controller takes a system level approach to managing the multiple power domains and voltage requirements of lithium powered portable applications, integrating a number of functions and interfacing directly with a battery pack.

The IC fits between single function devices, such as a low dropout regulator (LDO) or switching converter, and SoCs. The devices have four low dropout regulators based on Dialog Semiconductor’s Smart Mirror technology, a real-time clock supply and buck converter, The main benefit of this approach is that it reduces the cost and PCB overhead of having to build in multiple off-the-shelf, low-integration power management components from multiple vendors.

The DA9025 can be used in stand-alone mode with pre-determined power-up sequence for simple operation, or controlled by an I2C bus for greater control as users can program in output voltages and power in individual blocks. Either way, it prolongs battery life through power efficiency.

TAGS: Mobile
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