As the demand for consumer electronics with enhanced audio and video performance increases, so does the need for longer battery life and smaller size. Longer battery life solutions require ultra low power audio and video products to meet the challenge, while meeting user demand for a heightened experience in sound and image quality.
Conexant’s PMIC IP is deployed in its audio/video designs to bring marked improvements in power consumption, as well as reduced PCB footprint and bill of materials (BOM) costs.
Targeted to low power audio and video processors and component products, the PMIC can be customized to support specific third party CPUs or application processors. This company’s power management IP portfolio includes:
- DC/DC Controllers (external power switch)
- Step-down Buck controllers
- Step-up boost controllers
- Step-up switching LED drivers
- DC/DC Buck converters with integrated power switches
- Inductorless DC/DC converters (charge-pumps)
- Step-down regulated charge-pumps
- Inverting regulated charge-pumps
- Linear regulators (LDOs)
Featuring technical innovation in both inductive and capacitive dc/dc converters, its inductive dc/dc converters use a standard digital CMOS process, and achieve high efficiency across all loads by employing a combination of leading techniques including:
- Automatic transition between PWM and PFM switching modes
- Dynamic scaling of power switch size and timing as a function of load current
- Dynamic enable/disable of controller building blocks.
The inductorless dc/dc converters for integration into ultra-low power audio and video products are state of the art. The efficiency of typical capacitive dc/dc converters varies significantly as a function of input and output voltages. By developing charge-pump architecture, it employs novel control techniques to support a wide range of input and output voltages while maintaining high efficiency and minimizing switching artifacts.
Integration of the PMIC IP into its own media processors, the CX92745 and CX 92755, are amongst the most cost-effective tablets in the world. Conexant’s media processor with integrated PMIC was an integral component for the new tablets.
Filed Under: Power Electronic Tips, Batteries, Electronics • electrical