power management, Dialog Semiconductor, DA9052
Dialog launches power management IC optimising efficiency of portable consumer devices
News Release from:
Dialog Semiconductor GmBH
10 February 2009
Dialog Semiconductor has introduced the DA9052, an advanced system power management integrated circuit (PMIC) that offers designers greater flexibility in reducing power consumption, size and cost in mobile phones and other portable multimedia devices.
Conceived as a platform-PMIC, capable of supporting all major families of application and mobile graphics processors, DA9052 offers an unprecedented level of user-configurability.
Up to 14 power supplies, 16 GPIOs and other system function behaviour may be adapted in different operating modes as a means of eliminating power consumption overhead in the host processor. This high level of system wakeup/mode control within the PMIC reduces design cycle time and complexity by enabling software and application development to start at an earlier phase using a pre-validated PMIC platform.
The DA9052 is easily set up through a simple graphical user interface in Dialog’s Power Commander software utility. This configures power sequencing and multiple sleep modes. The device integrates 4 DC/DC buck converters and 10 programmable LDOs on-chip, and the LDOs can be connected to the DC/DC converters to improve system efficiency. Each output can be connected in series or parallel, adding further flexibility. To further optimise the processor energy-per-task, dynamic voltage scaling can be used on up to 5 outputs and Dialog’s SmartMirror1 dynamic biasing is implemented on all linear regulators.
Power dissipation within the DA9052 itself is autonomously regulated on-chip. A dual-input switching DC/USB battery charger allows up to 1.2A to be drawn from a lithium battery with minimal thermal impact to the DA9052 device itself. This allows the increased output current to be sustained for maximum processor performance.
USB power inputs are over-voltage protected and the embedded power path controller manages energy flow between an AC adapter, USB cable and battery, whilst maintaining USB power specification compliance via the D+/D- data lines. This power path functionality is supported without any processor interaction, enabling power scenarios such as instant power-up with a fully discharged battery.
“Conventional discrete and fixed function PMIC’s lack the necessary control and flexibility demanded by end customers when embedded within a processor platform reference design” commented Mark Jacob, director of marketing at Dialog Semiconductor, “a new class of highly configurable platform PMIC is emerging which introduces a layer of user-software programmability. This enables customers to tune the hardware at design-time to complement their own customisation activity without incurring risk or time to market penalty”