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Wolfson Microelectronics has launched the WM8320, an integrated power management solution to maximise the processor performance and extend the battery life of portable multimedia devices.

It is the latest addition to Wolfson’s WM83xx power management portfolio and is targeted at applications that use ARM-based processors, particularly netbooks, mobile internet devices, smartphones, handsets and digital photo frames.

The WM8320 incorporates Wolfson’s Buckwise regulator technology, which enables the power management integrated circuits (PMICs) to cope with shifts in power requirements as different product functions are switched on and off by the user.

BuckWise regulator technology eliminates disturbances in the power supply outputs, without the need to add large external components, or reduce the processor speed to lower the load current.

The WM8320 can also be used in applications where there is no system battery, such as set-top boxes.

With the WM8320, consumer electronics manufacturers can use smaller components, such as SMT chip inductors, rather than expensive, large discrete wirewound inductors.

In conjunction with this, board space area can be reduced by 25 per cent over previous generation solutions.

Wolfson’s power management line includes a complete family of PMICs that intelligently manage and optimise power within the system to maximise battery life.

The design of the WM83xx family enables limitless configuration options, making it compatible with all application and mobile graphics processors, including all ARM-based processors, and configurable to address other architectures.

The WM8320 has four DC-DC synchronous regulators, two 1.2A that incorporate Buckwise technology, and two 1.0A.

The 1A regulators can be grouped together to generate a combined 1.6A output to support large memory banks, or to increase efficiency by pre-regulating any of the ten LDOs integrated in the WM8320.

The enhanced transient performance also saves power, enabling the processor to run at lower voltages, improving power efficiency.

System designers can choose to reduce processor power consumption by up to 25 per cent over previous generations of regulators, or to increase processor speed by up to 25 per cent.

Eeprom interface technology maximises design process flexibility, allowing product designers to override the one-time-programmable memory of the PMIC as many times as they want, while perfecting their design in terms of start-up sequences and voltage levels.

Product development and migration needs are easily accommodated, making the WM8320 and the WM831x family future-proof choices.

Wolfson Microelectronics

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