US 12,190,983 B2
Voltage generation circuit
Takaya Yasuda, Kawasaki Kanagawa (JP)
Assigned to Kioxia Corporation, Tokyo (JP)
Filed by KIOXIA CORPORATION, Tokyo (JP)
Filed on Aug. 30, 2022, as Appl. No. 17/898,841.
Prior Publication US 2023/0186955 A1, Jun. 15, 2023
Int. Cl. G11C 5/14 (2006.01); G05F 3/26 (2006.01)
CPC G11C 5/147 (2013.01) [G05F 3/262 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A voltage generation circuit that generates a first current having a first temperature-dependent characteristic in which a current value thereof changes with a predetermined change in temperature, and a second current having a second temperature-dependent characteristic different from the first temperature-dependent characteristic, the voltage generation circuit comprising:
a first power supply line to which a first power supply voltage is supplied;
a second power supply line to which a second power supply voltage lower than the first power supply voltage is supplied;
an output terminal;
a first variable resistor through which the second current flows, and a second variable resistor through which a third current flows;
a first current path from the first power supply line to a first node between the first variable resistor and the second variable resistor;
a second current path from a second node between the second variable resistor and the first power supply line to the second power supply line; and
a third current path from the first node to the second power supply line, wherein;
the first variable resistor and the second variable resistor are connected in series between the first power supply line and the second power supply line and between the output terminal and the second power supply line;
the second temperature-dependent characteristic is a characteristic in which a current value of the second current does not change with the predetermined change in temperature;
the third current has a current value that is based on a difference between a current value of the first current and a current value of the second current; and
when the first current is supplied to the second node,
a current flowing through the first current path has a current value that is n times the current value of the second current, where n is a positive number excluding 1, and
the second current flows through the second current path, and the first current flows through the third current path.