US 12,191,753 B2
DC-DC converter and semiconductor IC for cable voltage drop compensation
Takehito Mishima, Atsugi (JP); Akira Sato, Atsugi (JP); and Tomomitsu Ohara, Yamato (JP)
Assigned to MITSUMI ELECTRIC CO., LTD., Tokyo (JP)
Appl. No. 17/998,937
Filed by Takehito Mishima, Atsugi (JP); Akira Sato, Atsugi (JP); and Tomomitsu Ohara, Yamato (JP)
PCT Filed Apr. 23, 2021, PCT No. PCT/JP2021/016403
§ 371(c)(1), (2) Date Nov. 16, 2022,
PCT Pub. No. WO2021/235171, PCT Pub. Date Nov. 25, 2021.
Claims priority of application No. 2020-087560 (JP), filed on May 19, 2020.
Prior Publication US 2023/0179077 A1, Jun. 8, 2023
Int. Cl. H02M 3/158 (2006.01); H02M 1/00 (2006.01); H02M 1/08 (2006.01)
CPC H02M 1/0012 (2021.05) [H02M 1/0025 (2021.05); H02M 1/08 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A DC-DC converter that converts a DC input voltage supplied from a DC power supply and that outputs a DC voltage with a different potential, the DC-DC converter comprising:
a control circuit that controls a switching element in accordance with a potential difference between a feedback voltage proportional to an output voltage and a predetermined reference voltage;
a current supply circuit that causes a predetermined current to flow; and
a voltage correction circuit that corrects the reference voltage or the feedback voltage,
wherein the voltage correction circuit is configured to determine a voltage correction amount, based on information about a resistance on a load side input from outside when a current of the current supply circuit is output, and correct the reference voltage or the feedback voltage.