US 12,394,987 B2
Control circuit, DC-DC converter, and energy harvesting system
Teppei Hayashi, Tokyo (JP)
Assigned to Asahi Kasei Microdevices Corporation, Tokyo (JP)
Filed by Asahi Kasei Microdevices Corporation, Tokyo (JP)
Filed on Dec. 21, 2023, as Appl. No. 18/391,723.
Claims priority of application No. 2023-032158 (JP), filed on Mar. 2, 2023; and application No. 2023-192001 (JP), filed on Nov. 10, 2023.
Prior Publication US 2024/0297504 A1, Sep. 5, 2024
Int. Cl. H02J 3/38 (2006.01); H02J 3/12 (2006.01); H02J 50/00 (2016.01); H02M 3/07 (2006.01)
CPC H02J 3/38 (2013.01) [H02J 3/12 (2013.01); H02J 50/001 (2020.01); H02M 3/07 (2013.01); H02J 2300/26 (2020.01)] 18 Claims
OG exemplary drawing
 
1. A control circuit which controls a DC-DC converter which boosts an output voltage of an input source and outputs the output voltage which has been boosted, wherein
the DC-DC converter has:
a boost coil; and
a capacitor, and
the control circuit comprises:
an input terminal into which the output voltage is input;
a first transistor one end of which is coupled to the input terminal and another end of which is coupled to a node between one end of the boost coil and one end of the capacitor; and
a switch activation unit which boosts the output voltage, and applies the output voltage, which has been boosted, to a control terminal of the first transistor.