Multi-output programmable power manager IC
13.06.2008
Summit’s Multi-Output Programmable Power Manager Combines Advanced Power Delivery with Digital Power Control
Summit Microelectronics Microelectronics has announced the latest addition to the company’s family of multi-output programmable power manager ICs. The SMB119 is targeted at portable consumer equipment and integrates seven precision programmable regulators and a wide range of digital power control functions. This “one-chip” solution offers the highest design flexibility in the industry, while reducing system solution size and cost.
Summit’s easy-to-use PC-based graphical (GUI) development environment lets system designers digitally program the entire multiple output power supply and associated power management functions with a few clicks of a mouse. In high-volume production Summit provides product that is pre-programmed with the customer’s “custom configuration” at no extra cost. Compared to inflexible conventional analog power ICs, the SMB119 yields optimized power system designs in significantly shorter development time.
Features
The SMB119 incorporates three synchronous step-down converters, two step-up converters, one configurable step-up or step-down converter, and one low-dropout (LDO) linear regulator. Also included is a fully programmable system supervisor that monitors all channels for under-voltage and over-voltage events. The user can select how the SMB119 should react under abnormal conditions (assertion of RESET output, power-down in sequencing order or force shutdown), thereby maximizing system reliability.
The power manager operates at a switching frequency of 1MHz, allowing for space-saving system components. DC-DC Power conversion efficiency of up to 95 percent reduces thermal dissipation and improves battery life in portable systems. Further enhancing battery life, a shutdown mode reduces current consumption to 0.1μA while automatic PWM/PFM operation improves light load efficiency. A PWM-override mode is also available for noise sensitive RF or audio applications. Short circuit current limiting and thermal protection safety circuits are also built-in to enhance reliability. The power manager operates at a switching frequency of 1MHz, allowing for space-saving system components. DC-DC Power conversion efficiency of up to 95 percent reduces thermal dissipation and improves battery life in portable systems. Further enhancing battery life, a shutdown mode reduces current consumption to 0.1μA while automatic PWM/PFM operation improves light load efficiency. A PWM-override mode is also available for noise sensitive RF or audio applications. Short circuit current limiting and thermal protection safety circuits are also built-in to enhance reliability.
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