Micropelt Thermogenerator Overview
Using the proprietary Micropelt technology we manufacture also thin film thermogenerator components, and not only » Peltier cooler chips. Thermogenerators are current sources which convert heat (temperature differences) into electrical energy. The thermogenerator consists of leg pairs of n- and p-type material. Each leg pair generates a certain voltage. And again those Micropelt thermoelectric components are very small compared to devices using standard technology. An overview of Micropelt thermogenerator products can be found at the » products overview page. For application concepts see the » energy harvesting concepts page.
The voltage (U) generated by a thermogenerator is directly proportional to the number of leg pairs (N) and the temperature difference (ΔT) between top and bottom side times the Seebeck coefficient (α), so
U = N x ΔT x α.
With the Micropelt technology more than 100 leg pairs are possible on a square millimeter.
Energy harvesting (or energy scavenging), sensors and wireless communication are typical applications.
We focus on devices in the mW range rather than large scale power generation. First results for the MPG-D602 device with 450 leg pairs follow below. A heat load of around 1 W is applied.
Micropelt Thermogenerators
| Device | Foot print x y Total thickness |
Electrical resistance at 23 °C Thermal resistance at 85 °C |
Net Seebeck Voltage at 23 °C |
Features |
|---|---|---|---|---|
| » MPG-D651(PDF 1122 KB) | 3375 µm 2500 µm 1090 µm |
185 Ω 22 K/W |
75 mV/K | High output voltage per degree ΔT Very fast response time Ideal for energy harvesting and heat energy sensing |
| » MPG-D751(PDF 1122 KB) | 4248 µm 3364 µm 1090 µm |
300 Ω 12.5 K/W |
140 mV/K | High output voltage per degree ΔT Very fast response time Ideal for energy harvesting and heat energy sensing |
The chip size is given without size losses due to sawing as maximum dimensions. Sawing loss is less than 100 µm. Backside metallisation if available is Ti/Pt.
We provide support for mounting the devices in existing environments.
Micropelt GmbH
Emmy-Noether-Str. 2
79110 Freiburg
Elisabeth Frey
Phone: +49 (0) 761 156 337 0
Fax: +49 (0) 761 156 337 21
