The AEM00330 is a full power management chip and the AEM00300 is a storage element charger. The third PMIC is the AEM00940, a boost solution designed for supporting high efficiency energy transfer from sources having a lower voltage than the storage element.  

The AEM00330 and AEM00300 are self-configurable, with the ability to automatically switch between buck, buck-boost and boost operation. This enables faster adjustments with different source, storage and load arrangements (e.g., step-up, step-down) and maximises energy transfer capabilities of the devices. They have been designed to respond instantly to the power input once a pre-defined threshold has been exceeded, for quick and effective energy extraction, says the company.

The operating input voltage range goes from 140mV to 4.5V, so power levels of 3µW to 570mW can be managed. The PMICs also have the ability to swap from powering the load or the storage element, for example in door access systems, smart switches for smart home or smart building, point-of-sales (PoS) units and smart running shoes.     

The AEM00940 has an LDO-based output rather than a DC/DC-based one and selectable operating input from 50mV to 4.5V.

The PMICs can be used as pulsed and intermittent sources as well as with those that require a long time to reach their open-circuit.

All three can be applied to energy harvesting implementations with single and dual cell supercapacitors, Li-Ion, LiFePO4, Li-Po, NiCd, thin film batteries and solid state batteries. Each has selectable and adjustable storage element protection mechanisms, covering over-charge and over-discharge.

The AEM00330 is supplied in a 40-pin QFN package format, measuring 5.0 x 5.0mm. The AEM00300 comes in a 4.0 x 4.0mm 28-pin QFN package and the AEM00940 is supplied in a 5.0 x 5.0mm QFN28 package. They can each be adapted to meet customers’ specific packaging needs and are also available in a bare die format for high volume orders.

Dedicated evaluation kits (EVKs) for each of the new PMICs will be available soon, confirms e-peas.