发明名称 |
LOW INPUT VOLTAGE BOOST CONVERTER WITH PEAK INDUCTOR CURRENT CONTROL AND OFFSET COMPENSATED ZERO DETECTION |
摘要 |
The low input voltage boost converter with peak inductor current control and offset compensated zero detection provide a boost converter scheme to harvest energy from sources with small output voltages. Some embodiments described herein includes a thermoelectric boost converter that combines an IPEAK control scheme with offset compensation and duty cycled comparators to enable energy harvesting from TEG inputs as low as 5 mV to 10 mV, and the peak inductor current is independent to first order of the input voltage and output voltage. A control circuit can be configured to sample the input voltage (VIN) and then generate a pulse with a duration inversely proportional to VIN so as to control the boost converter switches such that a substantially constant peak inductor current is generated. |
申请公布号 |
US2015207411(A1) |
申请公布日期 |
2015.07.23 |
申请号 |
US201514600425 |
申请日期 |
2015.01.20 |
申请人 |
UNIVERSITY OF VIRGINIA PATENT FOUNDATION |
发明人 |
Calhoun Benton H.;Shrivastava Aatmesh |
分类号 |
H02M3/158 |
主分类号 |
H02M3/158 |
代理机构 |
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代理人 |
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主权项 |
1. An apparatus, comprising:
an inductor configured to pass through an inductor current; a boost converter switch operatively coupled to the inductor, the boost converter switch configured to receive an input voltage and generate an output voltage when the boost converter switch is activated; and a switch control circuit operatively coupled to the boost converter switch, the switch control circuit configured to receive the input voltage and send a control signal to activate the boost converter switch so as to maintain a peak inductor current substantially constant, the peak inductor current being first-order independent of the input voltage and the output voltage. |
地址 |
Charlottesville VA US |