US 11,887,652 B2
Control circuit and delay circuit
Lei Zhu, Hefei (CN)
Assigned to CHANGXIN MEMORY TECHNOLOGIES, INC., Hefei (CN)
Filed by CHANGXIN MEMORY TECHNOLOGIES, INC., Hefei (CN)
Filed on Aug. 17, 2021, as Appl. No. 17/404,246.
Application 17/404,246 is a continuation of application No. PCT/CN2021/095459, filed on May 24, 2021.
Claims priority of application No. 202011340785.9 (CN), filed on Nov. 25, 2020.
Prior Publication US 2022/0165323 A1, May 26, 2022
Int. Cl. G11C 5/14 (2006.01); G11C 11/4076 (2006.01); G11C 7/22 (2006.01); G11C 7/04 (2006.01); G11C 11/4074 (2006.01)
CPC G11C 11/4076 (2013.01) [G11C 7/04 (2013.01); G11C 7/222 (2013.01); G11C 7/225 (2013.01); G11C 11/4074 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A control circuit, comprising a control unit, a first feedback unit, and a second feedback unit, wherein
the first feedback unit is configured to output a first feedback signal according to a voltage of the control unit and a first reference voltage; a first terminal of the first feedback unit is connected to a first terminal of the control unit, a second terminal of the first feedback unit serves as an input terminal of the first reference voltage, and an output terminal of the first feedback unit is connected to a second terminal of the control unit and a first terminal of the second feedback unit;
the second feedback unit is configured to output a second feedback signal according to an output voltage of the first feedback unit and a second reference voltage; a second terminal of the second feedback unit serves as an input terminal of the second reference voltage, and an output terminal of the second feedback unit is connected to a third terminal of the control unit; and
the control unit is configured to adjust a voltage of the second terminal of the control unit according to the first feedback signal and adjust a voltage of the third terminal of the control unit according to the second feedback signal to make a value by which a current of the control unit changes be within a first range, wherein the current of the control unit changes along with a change of a first parameter; the first parameter comprises at least one of manufacturing process parameters, power supply voltage, or working temperature of the control circuit; a fourth terminal of the control unit is connected to a first power supply end and a fifth terminal of the control unit is connected to a negative power supply end, or the fourth terminal of the control unit is connected to a second power supply end and the fifth terminal of the control unit is connected to ground.