Power Electronics

Step-up Low-Voltage Booster Module for Energy Harvesting

Advanced Linear Devices Inc. announces the release of a new family of MicroPower Step-up Low-Voltage Booster Modules. Designated the ALD EH4200 Series, these printed circuit board modules step-up or boost the output voltage of certain popular energy generators, which by themselves are unable to initiate the electronic capture process for efficiently harvesting ambient or waste energy. Typical energy generators for example are thermoelectric generators, electromagnetic coils, single photovoltaic cells, and infrared emitters whose output voltages are generally in the tens of milli-volt range and power outputs that range from micro-watts to milli-watts. Utilizing ALD's micropower MOSFET semiconductor devices and a unique self-starting transformer-oscillator stage, the ALD EH4200 Series Booster Modules derive their operating power directly from one of the aforementioned energy generators and effectively create a voltage gain ranging from 75-150 times.

Two micropower step-up booster models ALD EH4205/4295, each with different source input impedance matching characteristics are currently available. The ALD EH4205 features a nominal input impedance of 50 ohms while the ALD EH4295 features an input impedance of 950 ohms. Other future models will be added to the family of modules with optional source input impedances designed to pair-up with other energy generators that may not be optimized with the current offerings.

ALD MicroPower Step-up Low-Voltage Booster Modules are compatible and best suited for driving loads such as the ALD EH300/EH301/EH300A/EH301A Energy Harvesting Modules. The EH4205/4295 output can be directly connected to the input terminals of the Energy Harvesting Module using a standard two-wire cable. ALD booster modules can also be used, independently for trickle-charging batteries or super-caps, including situations where the energy generating input source is intermittent and not well controlled or regulated.

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